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library ieee;
use ieee.std_logic_1164.all;
entity SeqOneBitAdder is
port(
A, B, CIN, CLK: IN std_logic;
S, COUT: OUT std_logic
);
end SeqOneBitAdder;
architecture impl of SeqOneBitAdder is
begin
process(CLK)
begin
if (rising_edge(CLK)) then
S <= A xor B xor CIN;
COUT <= (A and B) or (A and CIN) or (B and CIN);
end if;
end process;
end impl; |
------------------------------------------------------------------------------
-- Copyright (C) 2009 , Olivier Girard
--
-- Redistribution and use in source and binary forms, with or without
-- modification, are permitted provided that the following conditions
-- are met:
-- * Redistributions of source code must retain the above copyright
-- notice, this list of conditions and the following disclaimer.
-- * Redistributions in binary form must reproduce the above copyright
-- notice, this list of conditions and the following disclaimer in the
-- documentation and/or other materials provided with the distribution.
-- * Neither the name of the authors nor the names of its contributors
-- may be used to endorse or promote products derived from this software
-- without specific prior written permission.
--
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-- ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
-- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
-- OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
-- THE POSSIBILITY OF SUCH DAMAGE
--
------------------------------------------------------------------------------
--
--! @file fmsp430.vhd
--!
--! @brief fpgaMSP430 Top level file
--
--! @author Olivier Girard, [email protected]
--! @author Emmanuel Amadio, [email protected] (VHDL Rewrite)
--
------------------------------------------------------------------------------
--! @version 1
--! @date: 2017-04-21
------------------------------------------------------------------------------
library ieee;
use ieee.std_logic_1164.all; -- standard unresolved logic UX01ZWLH-
use ieee.numeric_std.all; -- for the signed, unsigned types and arithmetic ops
use ieee.math_real.all;
use work.fmsp_misc_package.all;
use work.fmsp_core_package.all;
use work.fmsp_per_package.all;
use work.fmsp_dbg_package.all;
use work.fmsp_functions.all;
entity fmsp430 is
generic (
INST_NR : integer := 0; -- Current fmsp instance number (for multicore systems)
TOTAL_NR : integer := 0; -- Total number of fmsp instances-1 (for multicore systems)
PMEM_SIZE : integer := 32768; -- Program Memory Size
DMEM_SIZE : integer := 16384; -- Data Memory Size
PER_SIZE : integer := 16384; -- Peripheral Memory Size
MULTIPLIER : boolean := false; -- Include/Exclude Hardware Multiplier
USER_VERSION : integer := 0; -- Custom user version number
DEBUG_EN : boolean := false; -- Include/Exclude Serial Debug interface
WATCHDOG : boolean := false; -- Include/Exclude Watchdog timer
DMA_IF_EN : boolean := false; -- Include/Exclude DMA interface support
NMI_EN : boolean := false; -- Include/Exclude Non-Maskable-Interrupt support
IRQ_NR : integer := 16; -- Number of IRQs
SYNC_NMI_EN : boolean := true; --
SYNC_CPU_EN : boolean := true; --
SYNC_DBG_EN : boolean := true; --
SYNC_DBG_UART_RXD : boolean := true; -- Synchronize RXD inputs
DBG_UART : boolean := false; -- Enable UART (8N1) debug interface
DBG_I2C : boolean := true; -- Enable I2C debug interface
DBG_I2C_BROADCAST_EN : boolean := false; -- Enable the I2C broadcast address
DBG_RST_BRK_EN : boolean := false; -- CPU break on PUC reset
DBG_HWBRK_0_EN : boolean := false; -- Include hardware breakpoints unit
DBG_HWBRK_1_EN : boolean := false; -- Include hardware breakpoints unit
DBG_HWBRK_2_EN : boolean := false; -- Include hardware breakpoints unit
DBG_HWBRK_3_EN : boolean := false; -- Include hardware breakpoints unit
DBG_HWBRK_RANGE : boolean := true; -- Enable/Disable the hardware breakpoint RANGE mode
DBG_UART_AUTO_SYNC : boolean := true; -- Debug UART interface auto data synchronization
DBG_UART_BAUD : integer := 9600; -- Debug UART interface data rate
DBG_DCO_FREQ : integer := 20000000
);
port (
mclk : in std_logic; -- Main system clock
-- Inputs
lfxt_clk : in std_logic; -- Low frequency oscillator (typ 32kHz)
reset_n : in std_logic; -- Reset Pin (active low, asynchronous and non-glitchy)
cpu_en : in std_logic; -- Enable CPU code execution (asynchronous and non-glitchy)
nmi : in std_logic; -- Non-maskable interrupt (asynchronous and non-glitchy)
-- Debug interface
dbg_en : in std_logic; -- Debug interface enable (asynchronous and non-glitchy)
dbg_i2c_addr : in std_logic_vector(6 downto 0); -- Debug interface: I2C Address
dbg_i2c_broadcast : in std_logic_vector(6 downto 0); -- Debug interface: I2C Broadcast Address (for multicore systems)
dbg_i2c_scl : in std_logic; -- Debug interface: I2C SCL
dbg_i2c_sda_in : in std_logic; -- Debug interface: I2C SDA IN
dbg_i2c_sda_out : out std_logic := '1'; -- Debug interface: I2C SDA OUT
dbg_uart_rxd : in std_logic; -- Debug interface: UART RXD (asynchronous)
dbg_uart_txd : out std_logic := '1'; -- Debug interface: UART TXD
-- DMA access
dma_addr : in std_logic_vector(15 downto 1); -- Direct Memory Access address
dma_dout : out std_logic_vector(15 downto 0); -- Direct Memory Access data output
dma_din : in std_logic_vector(15 downto 0); -- Direct Memory Access data input
dma_en : in std_logic; -- Direct Memory Access enable (high active)
dma_we : in std_logic_vector(1 downto 0); -- Direct Memory Access write byte enable (high active)
dma_priority : in std_logic; -- Direct Memory Access priority (0:low / 1:high)
dma_ready : out std_logic; -- Direct Memory Access is complete
dma_resp : out std_logic; -- Direct Memory Access response (0:Okay / 1:Error)
-- Data memory
dmem_addr : out std_logic_vector(f_log2(DMEM_SIZE)-2 downto 0); -- Data Memory address
dmem_dout : in std_logic_vector(15 downto 0); -- Data Memory data output
dmem_din : out std_logic_vector(15 downto 0); -- Data Memory data input
dmem_wen : out std_logic_vector(1 downto 0); -- Data Memory write byte enable (low active)
dmem_cen : out std_logic; -- Data Memory chip enable (low active)
-- Program memory
pmem_addr : out std_logic_vector(f_log2(PMEM_SIZE)-2 downto 0); -- Program Memory address
pmem_dout : in std_logic_vector(15 downto 0); -- Program Memory data output
pmem_din : out std_logic_vector(15 downto 0); -- Program Memory data input (optional)
pmem_wen : out std_logic_vector(1 downto 0); -- Program Memory write enable (low active) (optional)
pmem_cen : out std_logic; -- Program Memory chip enable (low active)
-- Peripheral interface
per_irq : in std_logic_vector(IRQ_NR-3 downto 0); -- Maskable interrupts (14, 30 or 62)
per_irq_acc : out std_logic_vector(IRQ_NR-3 downto 0); -- Interrupt request accepted (one-hot signal)
per_rst : out std_logic; -- Main system reset
per_freeze : out std_logic; -- Freeze peripherals
per_aclk_en : out std_logic; -- FPGA ONLY: ACLK enable
per_smclk_en : out std_logic; -- FPGA ONLY: SMCLK enable
-- Peripheral memory
per_addr : out std_logic_vector(13 downto 0); -- Peripheral address
per_dout : in std_logic_vector(15 downto 0); -- Peripheral data output
per_din : out std_logic_vector(15 downto 0); -- Peripheral data input
per_we : out std_logic_vector(1 downto 0); -- Peripheral write byte enable (high active)
per_en : out std_logic -- Peripheral enable (high active)
);
end entity fmsp430;
architecture RTL of fmsp430 is
constant C_INST_NR : std_logic_vector(7 downto 0) := STD_LOGIC_VECTOR(TO_UNSIGNED(INST_NR,8));--x"00";
constant C_TOTAL_NR : std_logic_vector(7 downto 0) := STD_LOGIC_VECTOR(TO_UNSIGNED(TOTAL_NR,8));--x"00";
--=============================================================================
-- 1) INTERNAL WIRES/REGISTERS/PARAMETERS DECLARATION
--=============================================================================
type core_wires_type is record
cpu_en : std_logic;
lfxt_clk : std_logic;
cpuoff : std_logic;
oscoff : std_logic;
scg1 : std_logic;
por : std_logic;
gie : std_logic;
cpu_id : std_logic_vector(31 downto 0);
nmi : std_logic;
nmi_acc : std_logic;
nmi_pnd : std_logic;
nmi_wkup : std_logic;
irq_acc : std_logic_vector(IRQ_NR-3 downto 0); -- Interrupt request accepted (one-hot signal)
dma_dout : std_logic_vector(15 downto 0); -- Direct Memory Access data output
dma_ready : std_logic; -- Direct Memory Access is complete
dma_resp : std_logic; -- Direct Memory Access response (0:Okay / 1:Error)
mrst : std_logic; -- Main system reset
end record;
type peripheral_wires_type is record
addr : std_logic_vector(13 downto 0); -- Peripheral address
din : std_logic_vector(15 downto 0); -- Peripheral data input
en : std_logic; -- Peripheral enable (high active)
we : std_logic_vector(1 downto 0); -- Peripheral write byte enable (high active)
aclk_en : std_logic; -- FPGA ONLY: ACLK enable
smclk_en : std_logic; -- FPGA ONLY: SMCLK enable
end record;
type dbg_wires_type is record
en : std_logic;
rst : std_logic;
puc_pnd_set : std_logic;
decode_noirq : std_logic;
pc : std_logic_vector(15 downto 0);
halt_cmd : std_logic;
halt_st : std_logic;
irq : std_logic;
wkup : std_logic;
cpu_reset : std_logic;
freeze : std_logic;
mem_addr : std_logic_vector(15 downto 0);
mem_dout : std_logic_vector(15 downto 0);
mem_din : std_logic_vector(15 downto 0);
mem_wr : std_logic_vector(1 downto 0);
mem_en : std_logic;
reg_din : std_logic_vector(15 downto 0);
reg_wr : std_logic;
eu_mab : std_logic_vector(15 downto 0);
eu_mdb_in : std_logic_vector(15 downto 0);
eu_mdb_out : std_logic_vector(15 downto 0);
eu_mb_wr : std_logic_vector(1 downto 0);
eu_mb_en : std_logic;
fe_mab : std_logic_vector(15 downto 0);
fe_mdb_in : std_logic_vector(15 downto 0);
fe_mb_en : std_logic;
fe_pmem_wait : std_logic;
end record;
type wdt_wires_type is record
ie : std_logic;
nmies : std_logic;
ifg : std_logic;
irq : std_logic;
wkup : std_logic;
cpu_reset : std_logic;
ifg_sw_clr : std_logic;
ifg_sw_set : std_logic;
end record;
signal wires : core_wires_type;
signal dbg_w : dbg_wires_type := ( en => '0',
rst => '0',
puc_pnd_set => '0',
decode_noirq => '0',
pc => x"0000",
halt_cmd => '0',
halt_st => '0',
irq => '0',
wkup => '0',
cpu_reset => '0',
freeze => '0',
mem_addr => x"0000",
mem_dout => x"0000",
mem_din => x"0000",
mem_wr => "00",
mem_en => '0',
reg_din => x"0000",
reg_wr => '0',
eu_mab => x"0000",
eu_mdb_in => x"0000",
eu_mdb_out => x"0000",
eu_mb_wr => "00",
eu_mb_en => '0',
fe_mab => x"0000",
fe_mdb_in => x"0000",
fe_mb_en => '0',
fe_pmem_wait => '0'
);
signal wdt_w : wdt_wires_type;
signal per_w : peripheral_wires_type;
signal per_dout_sfr : std_logic_vector(15 downto 0);
signal per_dout_clk : std_logic_vector(15 downto 0);
signal per_dout_wdt : std_logic_vector(15 downto 0) := x"0000";
signal per_dout_mpy : std_logic_vector(15 downto 0) := x"0000";
signal per_dout_or : std_logic_vector(15 downto 0);
begin
--=============================================================================
-- 1) CORE (<=> FETCH & DECODE & EXECUTE & MEMORY BACKBONE)
--=============================================================================
--! Synchronization
sync_cell_dbg_en : fmsp_sync_cell
generic map(
SYNC_EN => SYNC_DBG_EN
)
port map(
rst => wires.por,
clk => mclk,
data_in => dbg_en,
data_out => dbg_w.en
);
sync_cell_lfxt_clk : fmsp_sync_cell
generic map(
SYNC_EN => false
)
port map(
clk => mclk,
rst => wires.por,
data_in => lfxt_clk,
data_out => wires.lfxt_clk
);
sync_cell_cpu_en : fmsp_sync_cell
generic map(
SYNC_EN => SYNC_CPU_EN
)
port map(
clk => mclk,
rst => wires.por,
data_in => cpu_en,
data_out => wires.cpu_en
);
sync_cell_nmi : fmsp_sync_cell
generic map(
SYNC_EN => SYNC_NMI_EN
)
port map(
clk => mclk,
rst => wires.mrst,
data_in => nmi,
data_out => wires.nmi
);
--=============================================================================
-- 1) CORE (<=> FETCH & DECODE & EXECUTE & MEMORY BACKBONE)
--=============================================================================
core_unit : fmsp_core
generic map(
PMEM_SIZE => PMEM_SIZE, -- Program Memory Size
DMEM_SIZE => DMEM_SIZE, -- Data Memory Size
PER_SIZE => PER_SIZE,
DMA_IF_EN => DMA_IF_EN, -- Wakeup condition from DMA interface
IRQ_NR => IRQ_NR -- Number of IRQs
)
port map(
mclk => mclk, -- Main system clock
mrst => wires.mrst, -- Main system reset
-- Debug Interface
dbg_halt_cmd => dbg_w.halt_cmd, -- Debug interface Halt CPU command
dbg_halt_st => dbg_w.halt_st, -- Halt/Run status from CPU
dbg_reg_din => dbg_w.reg_din, -- Debug unit CPU register data input
dbg_reg_wr => dbg_w.reg_wr, -- Debug unit CPU register write
dbg_mem_addr => dbg_w.mem_addr, -- Debug address for rd/wr access
dbg_mem_dout => dbg_w.mem_dout, -- Debug unit data output
dbg_mem_din => dbg_w.mem_din, -- Debug unit Memory data input
dbg_mem_en => dbg_w.mem_en, -- Debug unit memory enable
dbg_mem_wr => dbg_w.mem_wr, -- Debug unit memory write
eu_mem_addr => dbg_w.eu_mab, -- Execution-Unit Memory address bus
eu_mem_en => dbg_w.eu_mb_en, -- Execution-Unit Memory bus enable
eu_mem_wr => dbg_w.eu_mb_wr, -- Execution-Unit Memory bus write transfer
fe_mem_din => dbg_w.fe_mdb_in, -- Frontend Memory data bus input
decode_noirq => dbg_w.decode_noirq, -- Frontend decode instruction
pc => dbg_w.pc, -- Program counter
-- DMA access
dma_addr => dma_addr, -- Direct Memory Access address
dma_dout => dma_dout, -- Direct Memory Access data output
dma_din => dma_din, -- Direct Memory Access data input
dma_we => dma_we, -- Direct Memory Access write byte enable (high active)
dma_en => dma_en, -- Direct Memory Access enable (high active)
dma_priority => dma_priority, -- Direct Memory Access priority (0:low / 1:high)
dma_ready => dma_ready, -- Direct Memory Access is complete
dma_resp => dma_resp, -- Direct Memory Access response (0:Okay / 1:Error)
-- Peripheral memory
per_addr => per_w.addr, -- Peripheral address
per_dout => per_dout_or, -- Peripheral data output
per_din => per_w.din, -- Peripheral data input
per_we => per_w.we, -- Peripheral write enable (high active)
per_en => per_w.en, -- Peripheral enable (high active)
-- Data memory
dmem_addr => dmem_addr, -- Data Memory address
dmem_dout => dmem_dout, -- Data Memory data output
dmem_din => dmem_din, -- Data Memory data input
dmem_wen => dmem_wen, -- Data Memory write enable (low active)
dmem_cen => dmem_cen, -- Data Memory chip enable (low active)
-- Program memory
pmem_addr => pmem_addr, -- Program Memory address
pmem_dout => pmem_dout, -- Program Memory data output
pmem_din => pmem_din, -- Program Memory data input (optional)
pmem_wen => pmem_wen, -- Program Memory write enable (low active) (optional)
pmem_cen => pmem_cen, -- Program Memory chip enable (low active)
-- Non Maskable Interrupt
nmi_pnd => wires.nmi_pnd, -- Non-maskable interrupt pending
nmi_wkup => wires.nmi_wkup, -- NMI Wakeup
nmi_acc => wires.nmi_acc, -- Non-Maskable interrupt request accepted
-- Watchdog Interrupt
wdt_irq => wdt_w.irq, -- Watchdog-timer interrupt
wdt_wkup => wdt_w.wkup, -- Watchdog Wakeup
-- Maskable Interrupt
irq => per_irq, -- Maskable interrupts
irq_acc => wires.irq_acc, -- Interrupt request accepted
--============
cpu_en_s => wires.cpu_en, -- Enable CPU code execution (synchronous)
cpuoff => wires.cpuoff, -- Turns off the CPU
oscoff => wires.oscoff, -- Turns off LFXT1 clock input
scg1 => wires.scg1 -- System clock generator 1. Turns off the SMCLK
);
--=============================================================================
-- 2) GLOBAL CLOCK & RESET MANAGEMENT
--=============================================================================
clock_module_0 : fmsp_clock_module
generic map(
INST_NR => INST_NR, -- Current fmsp instance number (for multicore systems)
TOTAL_NR => TOTAL_NR, -- Total number of fmsp instances-1 (for multicore systems)
PMEM_SIZE => PMEM_SIZE, -- Program Memory Size
DMEM_SIZE => DMEM_SIZE, -- Data Memory Size
PER_SIZE => PER_SIZE, -- Peripheral Memory Size
DEBUG_EN => DEBUG_EN, -- Include/Exclude Serial Debug interface
WATCHDOG => WATCHDOG, -- Include/Exclude Watchdog timer
DMA_IF_EN => DMA_IF_EN, -- Include/Exclude DMA interface support
NMI_EN => NMI_EN -- Include/Exclude Non-Maskable-Interrupt support
)
port map(
mclk => mclk, -- Main system clock
-- INPUTs
reset_n => reset_n, -- Reset Pin (low active, asynchronous)
lfxt_clk => wires.lfxt_clk, -- Low frequency oscillator (typ 32kHz)
cpu_en => wires.cpu_en, -- Enable CPU code execution (synchronous)
cpuoff => wires.cpuoff, -- Turns off the CPU
oscoff => wires.oscoff, -- Turns off LFXT1 clock input
scg1 => wires.scg1, -- System clock generator 1. Turns off the SMCLK
wdt_reset => wdt_w.cpu_reset, -- Watchdog-timer reset
-- OUTPUTs
por => wires.por, -- Power-on reset
puc_rst => wires.mrst, -- Main system reset
-- Debug Interface
dbg_rst => dbg_w.rst, -- Debug unit reset
dbg_en => dbg_w.en, -- Debug interface enable (synchronous)
puc_pnd_set => dbg_w.puc_pnd_set, -- PUC pending set for the serial debug interface
dbg_cpu_reset => dbg_w.cpu_reset, -- Reset CPU from debug interface
-- Peripheral interface
smclk_en => per_w.smclk_en, -- SMCLK enable
aclk_en => per_w.aclk_en, -- ACLK enable
per_addr => per_w.addr, -- Peripheral address
per_din => per_w.din, -- Peripheral data input
per_en => per_w.en, -- Peripheral enable (high active)
per_we => per_w.we, -- Peripheral write enable (high active)
per_dout => per_dout_clk -- Peripheral data output
);
--=============================================================================
-- 3) SPECIAL FUNCTION REGISTERS
--=============================================================================
sfr_0 : fmsp_sfr
generic map(
INST_NR => INST_NR, -- Current fmsp instance number (for multicore systems)
TOTAL_NR => TOTAL_NR, -- Total number of fmsp instances-1 (for multicore systems)
PMEM_SIZE => PMEM_SIZE, -- Program Memory Size
DMEM_SIZE => DMEM_SIZE, -- Data Memory Size
PER_SIZE => PER_SIZE, -- Peripheral Memory Size
MULTIPLIER => MULTIPLIER, -- Include/Exclude Hardware Multiplier
USER_VERSION => USER_VERSION, -- Custom user version number
WATCHDOG => WATCHDOG, -- Include/Exclude Watchdog timer
NMI_EN => NMI_EN -- Include/Exclude Non-Maskable-Interrupt support
)
port map(
mclk => mclk, -- Main system clock
mrst => wires.mrst, -- Main system reset
cpu_id => wires.cpu_id, -- CPU ID
-- Non Maskable Interrupt
nmi => wires.nmi, -- Non-maskable interrupt (asynchronous)
nmi_acc => wires.nmi_acc, -- Non-Maskable interrupt request accepted
nmi_pnd => wires.nmi_pnd, -- NMI Pending
nmi_wkup => wires.nmi_wkup, -- NMI Wakeup
-- Watchdog Interface
wdtie => wdt_w.ie, -- Watchdog-timer interrupt enable
wdtifg => wdt_w.ifg, -- Watchdog-timer interrupt flag
wdtifg_sw_clr => wdt_w.ifg_sw_clr, -- Watchdog-timer interrupt flag software clear
wdtifg_sw_set => wdt_w.ifg_sw_set, -- Watchdog-timer interrupt flag software set
wdtnmies => wdt_w.nmies, -- Watchdog-timer NMI edge selection
-- Peripheral interface
per_addr => per_w.addr, -- Peripheral address
per_din => per_w.din, -- Peripheral data input
per_en => per_w.en, -- Peripheral enable (high active)
per_we => per_w.we, -- Peripheral write enable (high active)
per_dout => per_dout_sfr -- Peripheral data output
);
--=============================================================================
-- 4) WATCHDOG TIMER
--=============================================================================
ADD_WATCHDOG : if WATCHDOG generate
watchdog : fmsp_watchdog
port map(
mclk => mclk, -- Main system clock
mrst => wires.mrst, -- Main system reset
por => wires.por, -- Power-on reset
-- INPUTs
dbg_freeze => dbg_w.freeze, -- Freeze Watchdog counter
wdtie => wdt_w.ie, -- Watchdog-timer interrupt enable
wdtifg_irq_clr => wires.irq_acc(IRQ_NR-6), -- Clear Watchdog-timer interrupt flag
wdtifg_sw_clr => wdt_w.ifg_sw_clr, -- Watchdog-timer interrupt flag software clear
wdtifg_sw_set => wdt_w.ifg_sw_set, -- Watchdog-timer interrupt flag software set
-- OUTPUTs
wdt_reset => wdt_w.cpu_reset, -- Watchdog-timer reset
wdt_irq => wdt_w.irq, -- Watchdog-timer interrupt
wdt_wkup => wdt_w.wkup, -- Watchdog Wakeup
wdtifg => wdt_w.ifg, -- Watchdog-timer interrupt flag
wdtnmies => wdt_w.nmies, -- Watchdog-timer NMI edge selection
-- Peripheral interface
aclk_en => per_w.aclk_en, -- ACLK enable
smclk_en => per_w.smclk_en, -- SMCLK enable
per_addr => per_w.addr, -- Peripheral address
per_din => per_w.din, -- Peripheral data input
per_en => per_w.en, -- Peripheral enable (high active)
per_we => per_w.we, -- Peripheral write enable (high active)
per_dout => per_dout_wdt -- Peripheral data output
);
end generate ADD_WATCHDOG;
--=============================================================================
-- 5) HARDWARE MULTIPLIER
--=============================================================================
ADD_MULTIPLIER : if MULTIPLIER generate
multiplier : fmsp_multiplier
port map(
mclk => mclk, -- Main system clock
mrst => wires.mrst, -- Main system reset
-- Peripheral interface
per_addr => per_w.addr, -- Peripheral address
per_din => per_w.din, -- Peripheral data input
per_en => per_w.en, -- Peripheral enable (high active)
per_we => per_w.we, -- Peripheral write enable (high active)
per_dout => per_dout_mpy -- Peripheral data output
);
end generate ADD_MULTIPLIER;
--=============================================================================
-- 6) PERIPHERALS' OUTPUT BUS
--=============================================================================
per_dout_or <= per_dout
or per_dout_clk
or per_dout_sfr
or per_dout_wdt
or per_dout_mpy;
--=============================================================================
-- 7) DEBUG INTERFACE
--=============================================================================
dbg : fmsp_dbg
generic map(
DBG_DCO_FREQ => DBG_DCO_FREQ, -- Debug mclk frequency
DBG_UART => DBG_UART, -- Enable UART (8N1) debug interface
DBG_UART_AUTO_SYNC => DBG_UART_AUTO_SYNC, -- Debug UART interface auto data synchronization
DBG_UART_BAUD => DBG_UART_BAUD, -- Debug UART interface data rate
DBG_I2C => DBG_I2C, -- Enable I2C debug interface
DBG_I2C_BROADCAST_EN => DBG_I2C_BROADCAST_EN, -- Enable the I2C broadcast address
DBG_RST_BRK_EN => DBG_RST_BRK_EN, -- CPU break on PUC reset
DBG_HWBRK_0_EN => DBG_HWBRK_0_EN, -- Include hardware breakpoints unit
DBG_HWBRK_1_EN => DBG_HWBRK_1_EN, -- Include hardware breakpoints unit
DBG_HWBRK_2_EN => DBG_HWBRK_2_EN, -- Include hardware breakpoints unit
DBG_HWBRK_3_EN => DBG_HWBRK_3_EN, -- Include hardware breakpoints unit
DBG_HWBRK_RANGE => DBG_HWBRK_RANGE, -- Enable/Disable the hardware breakpoint RANGE mode
SYNC_DBG_UART_RXD => SYNC_DBG_UART_RXD -- Synchronize RXD inputs
)
port map(
dbg_clk => mclk, -- Debug unit clock
dbg_rst => dbg_w.rst, -- Debug unit reset
-- INPUTs
cpu_nr_inst => C_INST_NR, -- Current fmsp instance number
cpu_nr_total => C_TOTAL_NR, -- Total number of fmsp instances-1
cpu_id => wires.cpu_id, -- CPU ID
cpu_en_s => wires.cpu_en, -- Enable CPU code execution (synchronous)
dbg_en_s => dbg_w.en, -- Debug interface enable (synchronous)
dbg_halt_st => dbg_w.halt_st, -- Halt/Run status from CPU
-- I2C Interface
dbg_i2c_addr => dbg_i2c_addr, -- Debug interface: I2C Address
dbg_i2c_broadcast => dbg_i2c_broadcast, -- Debug interface: I2C Broadcast Address (for multicore systems)
dbg_i2c_scl => dbg_i2c_scl, -- Debug interface: I2C SCL
dbg_i2c_sda_in => dbg_i2c_sda_in, -- Debug interface: I2C SDA IN
dbg_i2c_sda_out => dbg_i2c_sda_out, -- Debug interface: I2C SDA OUT
-- UART Interface
dbg_uart_rxd => dbg_uart_rxd, -- Debug interface: UART RXD (asynchronous)
dbg_uart_txd => dbg_uart_txd, -- Debug interface: UART TXD
-- Core interface
dbg_mem_din => dbg_w.mem_din, -- Debug unit Memory data input
dbg_mem_addr => dbg_w.mem_addr, -- Debug address for rd/wr access
dbg_mem_dout => dbg_w.mem_dout, -- Debug unit data output
dbg_mem_en => dbg_w.mem_en, -- Debug unit memory enable
dbg_mem_wr => dbg_w.mem_wr, -- Debug unit memory write
dbg_reg_din => dbg_w.reg_din, -- Debug unit CPU register data input
decode_noirq => dbg_w.decode_noirq, -- Frontend decode instruction
eu_mab => dbg_w.eu_mab, -- Execution-Unit Memory address bus
eu_mb_en => dbg_w.eu_mb_en, -- Execution-Unit Memory bus enable
eu_mb_wr => dbg_w.eu_mb_wr, -- Execution-Unit Memory bus write transfer
fe_mdb_in => dbg_w.fe_mdb_in, -- Frontend Memory data bus input
pc => dbg_w.pc, -- Program counter
puc_pnd_set => dbg_w.puc_pnd_set, -- PUC pending set for the serial debug interface
-- OUTPUTs
dbg_cpu_reset => dbg_w.cpu_reset, -- Reset CPU from debug interface
dbg_freeze => dbg_w.freeze, -- Freeze peripherals
dbg_halt_cmd => dbg_w.halt_cmd, -- Halt CPU command
dbg_reg_wr => dbg_w.reg_wr -- Debug unit CPU register write
);
-- Peripheral interface
per_irq_acc <= wires.irq_acc; -- Interrupt request accepted (one-hot signal)
per_rst <= wires.mrst; -- Main system reset
per_freeze <= dbg_w.freeze; -- Freeze peripherals
per_aclk_en <= per_w.aclk_en; -- ACLK enable
per_smclk_en <= per_w.smclk_en; -- FPGA ONLY: SMCLK enable
per_addr <= per_w.addr; -- Peripheral address
per_din <= per_w.din; -- Peripheral data input
per_en <= per_w.en; -- Peripheral enable (high active)
per_we <= per_w.we; -- Peripheral write enable (high active)
end RTL; -- fmsp430
|
----------------------------------------------------------------------------
--
-- Atmel AVR CPU Test Entity Declaration
--
-- This is the entity declaration which must be used for building the entire
-- AVR CPU design (including data and program memory) for testing.
--
-- Revision History:
-- 24 Mar 15 Albert Gural Added connections between AVR CPU and memories.
--
----------------------------------------------------------------------------
--
-- AVR_CPU_TEST
--
-- This is the ALU testing interface. It is entirely self-contained,
-- except for clock, reset, and interrupt inputs, so testing is done
-- primarily by modifying the program memory.
--
-- Inputs:
-- Clock - clock source
-- Reset - reset input
-- INT0 - interrupts
-- INT1 - ""
--
-- Outputs:
-- NONE
--
library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_arith.all;
use ieee.numeric_std.all;
library opcodes;
use opcodes.opcodes.all;
entity AVR_CPU_TEST is
port(
Clock : in std_logic; -- system clock
Reset : in std_logic; -- global reset
INT0 : in std_logic; -- interrupt 0
INT1 : in std_logic; -- interrupt 1
Addr : out std_logic_vector(15 downto 0);-- program counter address
IRDebug : out std_logic_vector(15 downto 0);-- current instruction
Debug : out std_logic_vector(7 downto 0) -- debug output
);
end AVR_CPU_TEST;
architecture Structural of AVR_CPU_TEST is
signal ProgAB : std_logic_vector(15 downto 0);
signal ProgDB : std_logic_vector(15 downto 0);
signal DataAB : std_logic_vector(15 downto 0);
signal DataDB : std_logic_vector(7 downto 0);
signal DataRd : std_logic;
signal DataWr : std_logic;
begin
Addr <= ProgAB;
AVRCPU : entity work.AVR_CPU
port map (
clock => clock,
Reset => Reset,
INT0 => INT0,
INT1 => INT1,
ProgAB => ProgAB,
ProgDB => ProgDB,
DataWr => DataWr,
DataRd => DataRd,
DataAB => DataAB,
DataDB => DataDB,
IRDebug => IRDebug,
Debug => Debug
);
DataMemory : entity work.DataMemory
port map (
RE => DataRd,
WE => DataWr,
DataAB => DataAB,
DataDB => DataDB
);
ProgMemory : entity work.ProgMemory
port map (
Reset => Reset,
ProgAB => ProgAB,
ProgDB => ProgDB
);
end Structural;
|
entity one is
end entity;
entity two is
end two;
entity three is
end entity three;
entity four is
port (
a : in integer := 4;
b, bee : out bit;
c : inout integer;
d : buffer bit );
end entity;
entity five is
generic (
X : boolean;
Y : integer := 2 * 5);
port (
signal p : out bit );
end entity;
entity six is
attribute a : integer;
attribute a of six : entity is 1;
end entity;
entity seven is
begin
assert (true ) report "should not assert" severity note;
assert (false) report "should assert" severity note;
end entity seven;
entity eight is
generic (
signal x : integer );
end entity;
|
entity one is
end entity;
entity two is
end two;
entity three is
end entity three;
entity four is
port (
a : in integer := 4;
b, bee : out bit;
c : inout integer;
d : buffer bit );
end entity;
entity five is
generic (
X : boolean;
Y : integer := 2 * 5);
port (
signal p : out bit );
end entity;
entity six is
attribute a : integer;
attribute a of six : entity is 1;
end entity;
entity seven is
begin
assert (true ) report "should not assert" severity note;
assert (false) report "should assert" severity note;
end entity seven;
entity eight is
generic (
signal x : integer );
end entity;
|
entity one is
end entity;
entity two is
end two;
entity three is
end entity three;
entity four is
port (
a : in integer := 4;
b, bee : out bit;
c : inout integer;
d : buffer bit );
end entity;
entity five is
generic (
X : boolean;
Y : integer := 2 * 5);
port (
signal p : out bit );
end entity;
entity six is
attribute a : integer;
attribute a of six : entity is 1;
end entity;
entity seven is
begin
assert (true ) report "should not assert" severity note;
assert (false) report "should assert" severity note;
end entity seven;
entity eight is
generic (
signal x : integer );
end entity;
|
entity one is
end entity;
entity two is
end two;
entity three is
end entity three;
entity four is
port (
a : in integer := 4;
b, bee : out bit;
c : inout integer;
d : buffer bit );
end entity;
entity five is
generic (
X : boolean;
Y : integer := 2 * 5);
port (
signal p : out bit );
end entity;
entity six is
attribute a : integer;
attribute a of six : entity is 1;
end entity;
entity seven is
begin
assert (true ) report "should not assert" severity note;
assert (false) report "should assert" severity note;
end entity seven;
entity eight is
generic (
signal x : integer );
end entity;
|
entity one is
end entity;
entity two is
end two;
entity three is
end entity three;
entity four is
port (
a : in integer := 4;
b, bee : out bit;
c : inout integer;
d : buffer bit );
end entity;
entity five is
generic (
X : boolean;
Y : integer := 2 * 5);
port (
signal p : out bit );
end entity;
entity six is
attribute a : integer;
attribute a of six : entity is 1;
end entity;
entity seven is
begin
assert (true ) report "should not assert" severity note;
assert (false) report "should assert" severity note;
end entity seven;
entity eight is
generic (
signal x : integer );
end entity;
|
-- Accellera Standard V2.3 Open Verification Library (OVL).
-- Accellera Copyright (c) 2008. All rights reserved.
library ieee;
use ieee.std_logic_1164.all;
use work.std_ovl.all;
entity ovl_always is
generic (
severity_level : ovl_severity_level := OVL_SEVERITY_LEVEL_NOT_SET;
property_type : ovl_property_type := OVL_PROPERTY_TYPE_NOT_SET;
msg : string := OVL_MSG_NOT_SET;
coverage_level : ovl_coverage_level := OVL_COVERAGE_LEVEL_NOT_SET;
clock_edge : ovl_active_edges := OVL_ACTIVE_EDGES_NOT_SET;
reset_polarity : ovl_reset_polarity := OVL_RESET_POLARITY_NOT_SET;
gating_type : ovl_gating_type := OVL_GATING_TYPE_NOT_SET;
controls : ovl_ctrl_record := OVL_CTRL_DEFAULTS
);
port (
clock : in std_logic;
reset : in std_logic;
enable : in std_logic;
test_expr : in std_logic;
fire : out std_logic_vector(OVL_FIRE_WIDTH - 1 downto 0)
);
end entity ovl_always;
|
--==============================================================================
--! @file ddr3_ctrl_wrapper_pkg.vhd
--==============================================================================
--! Standard library
library IEEE;
--! Standard packages
use IEEE.STD_LOGIC_1164.all;
use IEEE.NUMERIC_STD.all;
--! Specific packages
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
-- DDR3 Controller Wrapper Package
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--! @brief
--! DDR3 controller wrapper package
--------------------------------------------------------------------------------
--! @details
--! Contains DDR3 controller wrapper component declaration.
--! Component used in the wrapper are generated using Xilinx CoreGen.
--------------------------------------------------------------------------------
--! @version
--! 0.1 | mc | 06.07.2012 | File creation and Doxygen comments
--!
--! @author
--! mc : Matthieu Cattin, CERN (BE-CO-HT)
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
-- GNU LESSER GENERAL PUBLIC LICENSE
--------------------------------------------------------------------------------
-- This source file is free software; you can redistribute it and/or modify it
-- under the terms of the GNU Lesser General Public License as published by the
-- Free Software Foundation; either version 2.1 of the License, or (at your
-- option) any later version. This source is distributed in the hope that it
-- will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
-- of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-- See the GNU Lesser General Public License for more details. You should have
-- received a copy of the GNU Lesser General Public License along with this
-- source; if not, download it from http://www.gnu.org/licenses/lgpl-2.1.html
--------------------------------------------------------------------------------
--==============================================================================
--! Entity declaration for ddr3_ctrl_wrapper_pkg
--==============================================================================
package ddr3_ctrl_wrapper_pkg is
--============================================================================
--! Components declaration
--============================================================================
----------------------------------------------------------------------------
-- SPEC
----------------------------------------------------------------------------
component ddr3_ctrl_spec_bank3_32b_32b
generic
(C3_P0_MASK_SIZE : integer := 4;
C3_P0_DATA_PORT_SIZE : integer := 32;
C3_P1_MASK_SIZE : integer := 4;
C3_P1_DATA_PORT_SIZE : integer := 32;
C3_MEMCLK_PERIOD : integer := 3000;
C3_RST_ACT_LOW : integer := 1;
C3_INPUT_CLK_TYPE : string := "SINGLE_ENDED";
C3_CALIB_SOFT_IP : string := "TRUE";
C3_SIMULATION : string := "FALSE";
DEBUG_EN : integer := 0;
C3_MEM_ADDR_ORDER : string := "ROW_BANK_COLUMN";
C3_NUM_DQ_PINS : integer := 16;
C3_MEM_ADDR_WIDTH : integer := 14;
C3_MEM_BANKADDR_WIDTH : integer := 3
);
port
(mcb3_dram_dq : inout std_logic_vector(C3_NUM_DQ_PINS-1 downto 0);
mcb3_dram_a : out std_logic_vector(C3_MEM_ADDR_WIDTH-1 downto 0);
mcb3_dram_ba : out std_logic_vector(C3_MEM_BANKADDR_WIDTH-1 downto 0);
mcb3_dram_ras_n : out std_logic;
mcb3_dram_cas_n : out std_logic;
mcb3_dram_we_n : out std_logic;
mcb3_dram_odt : out std_logic;
mcb3_dram_reset_n : out std_logic;
mcb3_dram_cke : out std_logic;
mcb3_dram_dm : out std_logic;
mcb3_dram_udqs : inout std_logic;
mcb3_dram_udqs_n : inout std_logic;
mcb3_rzq : inout std_logic;
mcb3_dram_udm : out std_logic;
c3_sys_clk : in std_logic;
c3_sys_rst_i : in std_logic;
c3_calib_done : out std_logic;
c3_clk0 : out std_logic;
c3_rst0 : out std_logic;
mcb3_dram_dqs : inout std_logic;
mcb3_dram_dqs_n : inout std_logic;
mcb3_dram_ck : out std_logic;
mcb3_dram_ck_n : out std_logic;
c3_p0_cmd_clk : in std_logic;
c3_p0_cmd_en : in std_logic;
c3_p0_cmd_instr : in std_logic_vector(2 downto 0);
c3_p0_cmd_bl : in std_logic_vector(5 downto 0);
c3_p0_cmd_byte_addr : in std_logic_vector(29 downto 0);
c3_p0_cmd_empty : out std_logic;
c3_p0_cmd_full : out std_logic;
c3_p0_wr_clk : in std_logic;
c3_p0_wr_en : in std_logic;
c3_p0_wr_mask : in std_logic_vector(C3_P0_MASK_SIZE - 1 downto 0);
c3_p0_wr_data : in std_logic_vector(C3_P0_DATA_PORT_SIZE - 1 downto 0);
c3_p0_wr_full : out std_logic;
c3_p0_wr_empty : out std_logic;
c3_p0_wr_count : out std_logic_vector(6 downto 0);
c3_p0_wr_underrun : out std_logic;
c3_p0_wr_error : out std_logic;
c3_p0_rd_clk : in std_logic;
c3_p0_rd_en : in std_logic;
c3_p0_rd_data : out std_logic_vector(C3_P0_DATA_PORT_SIZE - 1 downto 0);
c3_p0_rd_full : out std_logic;
c3_p0_rd_empty : out std_logic;
c3_p0_rd_count : out std_logic_vector(6 downto 0);
c3_p0_rd_overflow : out std_logic;
c3_p0_rd_error : out std_logic;
c3_p1_cmd_clk : in std_logic;
c3_p1_cmd_en : in std_logic;
c3_p1_cmd_instr : in std_logic_vector(2 downto 0);
c3_p1_cmd_bl : in std_logic_vector(5 downto 0);
c3_p1_cmd_byte_addr : in std_logic_vector(29 downto 0);
c3_p1_cmd_empty : out std_logic;
c3_p1_cmd_full : out std_logic;
c3_p1_wr_clk : in std_logic;
c3_p1_wr_en : in std_logic;
c3_p1_wr_mask : in std_logic_vector(C3_P1_MASK_SIZE - 1 downto 0);
c3_p1_wr_data : in std_logic_vector(C3_P1_DATA_PORT_SIZE - 1 downto 0);
c3_p1_wr_full : out std_logic;
c3_p1_wr_empty : out std_logic;
c3_p1_wr_count : out std_logic_vector(6 downto 0);
c3_p1_wr_underrun : out std_logic;
c3_p1_wr_error : out std_logic;
c3_p1_rd_clk : in std_logic;
c3_p1_rd_en : in std_logic;
c3_p1_rd_data : out std_logic_vector(C3_P1_DATA_PORT_SIZE - 1 downto 0);
c3_p1_rd_full : out std_logic;
c3_p1_rd_empty : out std_logic;
c3_p1_rd_count : out std_logic_vector(6 downto 0);
c3_p1_rd_overflow : out std_logic;
c3_p1_rd_error : out std_logic
);
end component ddr3_ctrl_spec_bank3_32b_32b;
component ddr3_ctrl_spec_bank3_64b_32b
generic
(C3_P0_MASK_SIZE : integer := 8;
C3_P0_DATA_PORT_SIZE : integer := 64;
C3_P1_MASK_SIZE : integer := 4;
C3_P1_DATA_PORT_SIZE : integer := 32;
C3_MEMCLK_PERIOD : integer := 3000;
C3_RST_ACT_LOW : integer := 0;
C3_INPUT_CLK_TYPE : string := "SINGLE_ENDED";
C3_CALIB_SOFT_IP : string := "TRUE";
C3_SIMULATION : string := "FALSE";
DEBUG_EN : integer := 0;
C3_MEM_ADDR_ORDER : string := "ROW_BANK_COLUMN";
C3_NUM_DQ_PINS : integer := 16;
C3_MEM_ADDR_WIDTH : integer := 14;
C3_MEM_BANKADDR_WIDTH : integer := 3
);
port
(mcb3_dram_dq : inout std_logic_vector(C3_NUM_DQ_PINS-1 downto 0);
mcb3_dram_a : out std_logic_vector(C3_MEM_ADDR_WIDTH-1 downto 0);
mcb3_dram_ba : out std_logic_vector(C3_MEM_BANKADDR_WIDTH-1 downto 0);
mcb3_dram_ras_n : out std_logic;
mcb3_dram_cas_n : out std_logic;
mcb3_dram_we_n : out std_logic;
mcb3_dram_odt : out std_logic;
mcb3_dram_reset_n : out std_logic;
mcb3_dram_cke : out std_logic;
mcb3_dram_dm : out std_logic;
mcb3_dram_udqs : inout std_logic;
mcb3_dram_udqs_n : inout std_logic;
mcb3_rzq : inout std_logic;
mcb3_dram_udm : out std_logic;
c3_sys_clk : in std_logic;
c3_sys_rst_i : in std_logic;
c3_calib_done : out std_logic;
c3_clk0 : out std_logic;
c3_rst0 : out std_logic;
mcb3_dram_dqs : inout std_logic;
mcb3_dram_dqs_n : inout std_logic;
mcb3_dram_ck : out std_logic;
mcb3_dram_ck_n : out std_logic;
c3_p0_cmd_clk : in std_logic;
c3_p0_cmd_en : in std_logic;
c3_p0_cmd_instr : in std_logic_vector(2 downto 0);
c3_p0_cmd_bl : in std_logic_vector(5 downto 0);
c3_p0_cmd_byte_addr : in std_logic_vector(29 downto 0);
c3_p0_cmd_empty : out std_logic;
c3_p0_cmd_full : out std_logic;
c3_p0_wr_clk : in std_logic;
c3_p0_wr_en : in std_logic;
c3_p0_wr_mask : in std_logic_vector(C3_P0_MASK_SIZE - 1 downto 0);
c3_p0_wr_data : in std_logic_vector(C3_P0_DATA_PORT_SIZE - 1 downto 0);
c3_p0_wr_full : out std_logic;
c3_p0_wr_empty : out std_logic;
c3_p0_wr_count : out std_logic_vector(6 downto 0);
c3_p0_wr_underrun : out std_logic;
c3_p0_wr_error : out std_logic;
c3_p0_rd_clk : in std_logic;
c3_p0_rd_en : in std_logic;
c3_p0_rd_data : out std_logic_vector(C3_P0_DATA_PORT_SIZE - 1 downto 0);
c3_p0_rd_full : out std_logic;
c3_p0_rd_empty : out std_logic;
c3_p0_rd_count : out std_logic_vector(6 downto 0);
c3_p0_rd_overflow : out std_logic;
c3_p0_rd_error : out std_logic;
c3_p1_cmd_clk : in std_logic;
c3_p1_cmd_en : in std_logic;
c3_p1_cmd_instr : in std_logic_vector(2 downto 0);
c3_p1_cmd_bl : in std_logic_vector(5 downto 0);
c3_p1_cmd_byte_addr : in std_logic_vector(29 downto 0);
c3_p1_cmd_empty : out std_logic;
c3_p1_cmd_full : out std_logic;
c3_p1_wr_clk : in std_logic;
c3_p1_wr_en : in std_logic;
c3_p1_wr_mask : in std_logic_vector(C3_P1_MASK_SIZE - 1 downto 0);
c3_p1_wr_data : in std_logic_vector(C3_P1_DATA_PORT_SIZE - 1 downto 0);
c3_p1_wr_full : out std_logic;
c3_p1_wr_empty : out std_logic;
c3_p1_wr_count : out std_logic_vector(6 downto 0);
c3_p1_wr_underrun : out std_logic;
c3_p1_wr_error : out std_logic;
c3_p1_rd_clk : in std_logic;
c3_p1_rd_en : in std_logic;
c3_p1_rd_data : out std_logic_vector(C3_P1_DATA_PORT_SIZE - 1 downto 0);
c3_p1_rd_full : out std_logic;
c3_p1_rd_empty : out std_logic;
c3_p1_rd_count : out std_logic_vector(6 downto 0);
c3_p1_rd_overflow : out std_logic;
c3_p1_rd_error : out std_logic
);
end component ddr3_ctrl_spec_bank3_64b_32b;
----------------------------------------------------------------------------
-- SVEC
----------------------------------------------------------------------------
component ddr3_ctrl_svec_bank4_32b_32b
generic
(C4_P0_MASK_SIZE : integer := 4;
C4_P0_DATA_PORT_SIZE : integer := 32;
C4_P1_MASK_SIZE : integer := 4;
C4_P1_DATA_PORT_SIZE : integer := 32;
C4_MEMCLK_PERIOD : integer := 3000;
C4_RST_ACT_LOW : integer := 1;
C4_INPUT_CLK_TYPE : string := "SINGLE_ENDED";
C4_CALIB_SOFT_IP : string := "TRUE";
C4_SIMULATION : string := "FALSE";
DEBUG_EN : integer := 0;
C4_MEM_ADDR_ORDER : string := "ROW_BANK_COLUMN";
C4_NUM_DQ_PINS : integer := 16;
C4_MEM_ADDR_WIDTH : integer := 14;
C4_MEM_BANKADDR_WIDTH : integer := 3
);
port
(mcb4_dram_dq : inout std_logic_vector(C4_NUM_DQ_PINS-1 downto 0);
mcb4_dram_a : out std_logic_vector(C4_MEM_ADDR_WIDTH-1 downto 0);
mcb4_dram_ba : out std_logic_vector(C4_MEM_BANKADDR_WIDTH-1 downto 0);
mcb4_dram_ras_n : out std_logic;
mcb4_dram_cas_n : out std_logic;
mcb4_dram_we_n : out std_logic;
mcb4_dram_odt : out std_logic;
mcb4_dram_reset_n : out std_logic;
mcb4_dram_cke : out std_logic;
mcb4_dram_dm : out std_logic;
mcb4_dram_udqs : inout std_logic;
mcb4_dram_udqs_n : inout std_logic;
mcb4_rzq : inout std_logic;
mcb4_dram_udm : out std_logic;
c4_sys_clk : in std_logic;
c4_sys_rst_i : in std_logic;
c4_calib_done : out std_logic;
c4_clk0 : out std_logic;
c4_rst0 : out std_logic;
mcb4_dram_dqs : inout std_logic;
mcb4_dram_dqs_n : inout std_logic;
mcb4_dram_ck : out std_logic;
mcb4_dram_ck_n : out std_logic;
c4_p0_cmd_clk : in std_logic;
c4_p0_cmd_en : in std_logic;
c4_p0_cmd_instr : in std_logic_vector(2 downto 0);
c4_p0_cmd_bl : in std_logic_vector(5 downto 0);
c4_p0_cmd_byte_addr : in std_logic_vector(29 downto 0);
c4_p0_cmd_empty : out std_logic;
c4_p0_cmd_full : out std_logic;
c4_p0_wr_clk : in std_logic;
c4_p0_wr_en : in std_logic;
c4_p0_wr_mask : in std_logic_vector(C4_P0_MASK_SIZE - 1 downto 0);
c4_p0_wr_data : in std_logic_vector(C4_P0_DATA_PORT_SIZE - 1 downto 0);
c4_p0_wr_full : out std_logic;
c4_p0_wr_empty : out std_logic;
c4_p0_wr_count : out std_logic_vector(6 downto 0);
c4_p0_wr_underrun : out std_logic;
c4_p0_wr_error : out std_logic;
c4_p0_rd_clk : in std_logic;
c4_p0_rd_en : in std_logic;
c4_p0_rd_data : out std_logic_vector(C4_P0_DATA_PORT_SIZE - 1 downto 0);
c4_p0_rd_full : out std_logic;
c4_p0_rd_empty : out std_logic;
c4_p0_rd_count : out std_logic_vector(6 downto 0);
c4_p0_rd_overflow : out std_logic;
c4_p0_rd_error : out std_logic;
c4_p1_cmd_clk : in std_logic;
c4_p1_cmd_en : in std_logic;
c4_p1_cmd_instr : in std_logic_vector(2 downto 0);
c4_p1_cmd_bl : in std_logic_vector(5 downto 0);
c4_p1_cmd_byte_addr : in std_logic_vector(29 downto 0);
c4_p1_cmd_empty : out std_logic;
c4_p1_cmd_full : out std_logic;
c4_p1_wr_clk : in std_logic;
c4_p1_wr_en : in std_logic;
c4_p1_wr_mask : in std_logic_vector(C4_P1_MASK_SIZE - 1 downto 0);
c4_p1_wr_data : in std_logic_vector(C4_P1_DATA_PORT_SIZE - 1 downto 0);
c4_p1_wr_full : out std_logic;
c4_p1_wr_empty : out std_logic;
c4_p1_wr_count : out std_logic_vector(6 downto 0);
c4_p1_wr_underrun : out std_logic;
c4_p1_wr_error : out std_logic;
c4_p1_rd_clk : in std_logic;
c4_p1_rd_en : in std_logic;
c4_p1_rd_data : out std_logic_vector(C4_P1_DATA_PORT_SIZE - 1 downto 0);
c4_p1_rd_full : out std_logic;
c4_p1_rd_empty : out std_logic;
c4_p1_rd_count : out std_logic_vector(6 downto 0);
c4_p1_rd_overflow : out std_logic;
c4_p1_rd_error : out std_logic
);
end component ddr3_ctrl_svec_bank4_32b_32b;
component ddr3_ctrl_svec_bank4_64b_32b
generic
(C4_P0_MASK_SIZE : integer := 8;
C4_P0_DATA_PORT_SIZE : integer := 64;
C4_P1_MASK_SIZE : integer := 4;
C4_P1_DATA_PORT_SIZE : integer := 32;
C4_MEMCLK_PERIOD : integer := 3000;
C4_RST_ACT_LOW : integer := 1;
C4_INPUT_CLK_TYPE : string := "SINGLE_ENDED";
C4_CALIB_SOFT_IP : string := "TRUE";
C4_SIMULATION : string := "FALSE";
DEBUG_EN : integer := 0;
C4_MEM_ADDR_ORDER : string := "ROW_BANK_COLUMN";
C4_NUM_DQ_PINS : integer := 16;
C4_MEM_ADDR_WIDTH : integer := 14;
C4_MEM_BANKADDR_WIDTH : integer := 3
);
port
(mcb4_dram_dq : inout std_logic_vector(C4_NUM_DQ_PINS-1 downto 0);
mcb4_dram_a : out std_logic_vector(C4_MEM_ADDR_WIDTH-1 downto 0);
mcb4_dram_ba : out std_logic_vector(C4_MEM_BANKADDR_WIDTH-1 downto 0);
mcb4_dram_ras_n : out std_logic;
mcb4_dram_cas_n : out std_logic;
mcb4_dram_we_n : out std_logic;
mcb4_dram_odt : out std_logic;
mcb4_dram_reset_n : out std_logic;
mcb4_dram_cke : out std_logic;
mcb4_dram_dm : out std_logic;
mcb4_dram_udqs : inout std_logic;
mcb4_dram_udqs_n : inout std_logic;
mcb4_rzq : inout std_logic;
mcb4_dram_udm : out std_logic;
c4_sys_clk : in std_logic;
c4_sys_rst_i : in std_logic;
c4_calib_done : out std_logic;
c4_clk0 : out std_logic;
c4_rst0 : out std_logic;
mcb4_dram_dqs : inout std_logic;
mcb4_dram_dqs_n : inout std_logic;
mcb4_dram_ck : out std_logic;
mcb4_dram_ck_n : out std_logic;
c4_p0_cmd_clk : in std_logic;
c4_p0_cmd_en : in std_logic;
c4_p0_cmd_instr : in std_logic_vector(2 downto 0);
c4_p0_cmd_bl : in std_logic_vector(5 downto 0);
c4_p0_cmd_byte_addr : in std_logic_vector(29 downto 0);
c4_p0_cmd_empty : out std_logic;
c4_p0_cmd_full : out std_logic;
c4_p0_wr_clk : in std_logic;
c4_p0_wr_en : in std_logic;
c4_p0_wr_mask : in std_logic_vector(C4_P0_MASK_SIZE - 1 downto 0);
c4_p0_wr_data : in std_logic_vector(C4_P0_DATA_PORT_SIZE - 1 downto 0);
c4_p0_wr_full : out std_logic;
c4_p0_wr_empty : out std_logic;
c4_p0_wr_count : out std_logic_vector(6 downto 0);
c4_p0_wr_underrun : out std_logic;
c4_p0_wr_error : out std_logic;
c4_p0_rd_clk : in std_logic;
c4_p0_rd_en : in std_logic;
c4_p0_rd_data : out std_logic_vector(C4_P0_DATA_PORT_SIZE - 1 downto 0);
c4_p0_rd_full : out std_logic;
c4_p0_rd_empty : out std_logic;
c4_p0_rd_count : out std_logic_vector(6 downto 0);
c4_p0_rd_overflow : out std_logic;
c4_p0_rd_error : out std_logic;
c4_p1_cmd_clk : in std_logic;
c4_p1_cmd_en : in std_logic;
c4_p1_cmd_instr : in std_logic_vector(2 downto 0);
c4_p1_cmd_bl : in std_logic_vector(5 downto 0);
c4_p1_cmd_byte_addr : in std_logic_vector(29 downto 0);
c4_p1_cmd_empty : out std_logic;
c4_p1_cmd_full : out std_logic;
c4_p1_wr_clk : in std_logic;
c4_p1_wr_en : in std_logic;
c4_p1_wr_mask : in std_logic_vector(C4_P1_MASK_SIZE - 1 downto 0);
c4_p1_wr_data : in std_logic_vector(C4_P1_DATA_PORT_SIZE - 1 downto 0);
c4_p1_wr_full : out std_logic;
c4_p1_wr_empty : out std_logic;
c4_p1_wr_count : out std_logic_vector(6 downto 0);
c4_p1_wr_underrun : out std_logic;
c4_p1_wr_error : out std_logic;
c4_p1_rd_clk : in std_logic;
c4_p1_rd_en : in std_logic;
c4_p1_rd_data : out std_logic_vector(C4_P1_DATA_PORT_SIZE - 1 downto 0);
c4_p1_rd_full : out std_logic;
c4_p1_rd_empty : out std_logic;
c4_p1_rd_count : out std_logic_vector(6 downto 0);
c4_p1_rd_overflow : out std_logic;
c4_p1_rd_error : out std_logic
);
end component ddr3_ctrl_svec_bank4_64b_32b;
component ddr3_ctrl_svec_bank5_32b_32b
generic
(C5_P0_MASK_SIZE : integer := 4;
C5_P0_DATA_PORT_SIZE : integer := 32;
C5_P1_MASK_SIZE : integer := 4;
C5_P1_DATA_PORT_SIZE : integer := 32;
C5_MEMCLK_PERIOD : integer := 3000;
C5_RST_ACT_LOW : integer := 1;
C5_INPUT_CLK_TYPE : string := "SINGLE_ENDED";
C5_CALIB_SOFT_IP : string := "TRUE";
C5_SIMULATION : string := "FALSE";
DEBUG_EN : integer := 0;
C5_MEM_ADDR_ORDER : string := "ROW_BANK_COLUMN";
C5_NUM_DQ_PINS : integer := 16;
C5_MEM_ADDR_WIDTH : integer := 14;
C5_MEM_BANKADDR_WIDTH : integer := 3
);
port
(mcb5_dram_dq : inout std_logic_vector(C5_NUM_DQ_PINS-1 downto 0);
mcb5_dram_a : out std_logic_vector(C5_MEM_ADDR_WIDTH-1 downto 0);
mcb5_dram_ba : out std_logic_vector(C5_MEM_BANKADDR_WIDTH-1 downto 0);
mcb5_dram_ras_n : out std_logic;
mcb5_dram_cas_n : out std_logic;
mcb5_dram_we_n : out std_logic;
mcb5_dram_odt : out std_logic;
mcb5_dram_reset_n : out std_logic;
mcb5_dram_cke : out std_logic;
mcb5_dram_dm : out std_logic;
mcb5_dram_udqs : inout std_logic;
mcb5_dram_udqs_n : inout std_logic;
mcb5_rzq : inout std_logic;
mcb5_dram_udm : out std_logic;
c5_sys_clk : in std_logic;
c5_sys_rst_i : in std_logic;
c5_calib_done : out std_logic;
c5_clk0 : out std_logic;
c5_rst0 : out std_logic;
mcb5_dram_dqs : inout std_logic;
mcb5_dram_dqs_n : inout std_logic;
mcb5_dram_ck : out std_logic;
mcb5_dram_ck_n : out std_logic;
c5_p0_cmd_clk : in std_logic;
c5_p0_cmd_en : in std_logic;
c5_p0_cmd_instr : in std_logic_vector(2 downto 0);
c5_p0_cmd_bl : in std_logic_vector(5 downto 0);
c5_p0_cmd_byte_addr : in std_logic_vector(29 downto 0);
c5_p0_cmd_empty : out std_logic;
c5_p0_cmd_full : out std_logic;
c5_p0_wr_clk : in std_logic;
c5_p0_wr_en : in std_logic;
c5_p0_wr_mask : in std_logic_vector(C5_P0_MASK_SIZE - 1 downto 0);
c5_p0_wr_data : in std_logic_vector(C5_P0_DATA_PORT_SIZE - 1 downto 0);
c5_p0_wr_full : out std_logic;
c5_p0_wr_empty : out std_logic;
c5_p0_wr_count : out std_logic_vector(6 downto 0);
c5_p0_wr_underrun : out std_logic;
c5_p0_wr_error : out std_logic;
c5_p0_rd_clk : in std_logic;
c5_p0_rd_en : in std_logic;
c5_p0_rd_data : out std_logic_vector(C5_P0_DATA_PORT_SIZE - 1 downto 0);
c5_p0_rd_full : out std_logic;
c5_p0_rd_empty : out std_logic;
c5_p0_rd_count : out std_logic_vector(6 downto 0);
c5_p0_rd_overflow : out std_logic;
c5_p0_rd_error : out std_logic;
c5_p1_cmd_clk : in std_logic;
c5_p1_cmd_en : in std_logic;
c5_p1_cmd_instr : in std_logic_vector(2 downto 0);
c5_p1_cmd_bl : in std_logic_vector(5 downto 0);
c5_p1_cmd_byte_addr : in std_logic_vector(29 downto 0);
c5_p1_cmd_empty : out std_logic;
c5_p1_cmd_full : out std_logic;
c5_p1_wr_clk : in std_logic;
c5_p1_wr_en : in std_logic;
c5_p1_wr_mask : in std_logic_vector(C5_P1_MASK_SIZE - 1 downto 0);
c5_p1_wr_data : in std_logic_vector(C5_P1_DATA_PORT_SIZE - 1 downto 0);
c5_p1_wr_full : out std_logic;
c5_p1_wr_empty : out std_logic;
c5_p1_wr_count : out std_logic_vector(6 downto 0);
c5_p1_wr_underrun : out std_logic;
c5_p1_wr_error : out std_logic;
c5_p1_rd_clk : in std_logic;
c5_p1_rd_en : in std_logic;
c5_p1_rd_data : out std_logic_vector(C5_P1_DATA_PORT_SIZE - 1 downto 0);
c5_p1_rd_full : out std_logic;
c5_p1_rd_empty : out std_logic;
c5_p1_rd_count : out std_logic_vector(6 downto 0);
c5_p1_rd_overflow : out std_logic;
c5_p1_rd_error : out std_logic
);
end component ddr3_ctrl_svec_bank5_32b_32b;
component ddr3_ctrl_svec_bank5_64b_32b
generic
(C5_P0_MASK_SIZE : integer := 8;
C5_P0_DATA_PORT_SIZE : integer := 64;
C5_P1_MASK_SIZE : integer := 4;
C5_P1_DATA_PORT_SIZE : integer := 32;
C5_MEMCLK_PERIOD : integer := 3000;
C5_RST_ACT_LOW : integer := 1;
C5_INPUT_CLK_TYPE : string := "SINGLE_ENDED";
C5_CALIB_SOFT_IP : string := "TRUE";
C5_SIMULATION : string := "FALSE";
DEBUG_EN : integer := 0;
C5_MEM_ADDR_ORDER : string := "ROW_BANK_COLUMN";
C5_NUM_DQ_PINS : integer := 16;
C5_MEM_ADDR_WIDTH : integer := 14;
C5_MEM_BANKADDR_WIDTH : integer := 3
);
port
(mcb5_dram_dq : inout std_logic_vector(C5_NUM_DQ_PINS-1 downto 0);
mcb5_dram_a : out std_logic_vector(C5_MEM_ADDR_WIDTH-1 downto 0);
mcb5_dram_ba : out std_logic_vector(C5_MEM_BANKADDR_WIDTH-1 downto 0);
mcb5_dram_ras_n : out std_logic;
mcb5_dram_cas_n : out std_logic;
mcb5_dram_we_n : out std_logic;
mcb5_dram_odt : out std_logic;
mcb5_dram_reset_n : out std_logic;
mcb5_dram_cke : out std_logic;
mcb5_dram_dm : out std_logic;
mcb5_dram_udqs : inout std_logic;
mcb5_dram_udqs_n : inout std_logic;
mcb5_rzq : inout std_logic;
mcb5_dram_udm : out std_logic;
c5_sys_clk : in std_logic;
c5_sys_rst_i : in std_logic;
c5_calib_done : out std_logic;
c5_clk0 : out std_logic;
c5_rst0 : out std_logic;
mcb5_dram_dqs : inout std_logic;
mcb5_dram_dqs_n : inout std_logic;
mcb5_dram_ck : out std_logic;
mcb5_dram_ck_n : out std_logic;
c5_p0_cmd_clk : in std_logic;
c5_p0_cmd_en : in std_logic;
c5_p0_cmd_instr : in std_logic_vector(2 downto 0);
c5_p0_cmd_bl : in std_logic_vector(5 downto 0);
c5_p0_cmd_byte_addr : in std_logic_vector(29 downto 0);
c5_p0_cmd_empty : out std_logic;
c5_p0_cmd_full : out std_logic;
c5_p0_wr_clk : in std_logic;
c5_p0_wr_en : in std_logic;
c5_p0_wr_mask : in std_logic_vector(C5_P0_MASK_SIZE - 1 downto 0);
c5_p0_wr_data : in std_logic_vector(C5_P0_DATA_PORT_SIZE - 1 downto 0);
c5_p0_wr_full : out std_logic;
c5_p0_wr_empty : out std_logic;
c5_p0_wr_count : out std_logic_vector(6 downto 0);
c5_p0_wr_underrun : out std_logic;
c5_p0_wr_error : out std_logic;
c5_p0_rd_clk : in std_logic;
c5_p0_rd_en : in std_logic;
c5_p0_rd_data : out std_logic_vector(C5_P0_DATA_PORT_SIZE - 1 downto 0);
c5_p0_rd_full : out std_logic;
c5_p0_rd_empty : out std_logic;
c5_p0_rd_count : out std_logic_vector(6 downto 0);
c5_p0_rd_overflow : out std_logic;
c5_p0_rd_error : out std_logic;
c5_p1_cmd_clk : in std_logic;
c5_p1_cmd_en : in std_logic;
c5_p1_cmd_instr : in std_logic_vector(2 downto 0);
c5_p1_cmd_bl : in std_logic_vector(5 downto 0);
c5_p1_cmd_byte_addr : in std_logic_vector(29 downto 0);
c5_p1_cmd_empty : out std_logic;
c5_p1_cmd_full : out std_logic;
c5_p1_wr_clk : in std_logic;
c5_p1_wr_en : in std_logic;
c5_p1_wr_mask : in std_logic_vector(C5_P1_MASK_SIZE - 1 downto 0);
c5_p1_wr_data : in std_logic_vector(C5_P1_DATA_PORT_SIZE - 1 downto 0);
c5_p1_wr_full : out std_logic;
c5_p1_wr_empty : out std_logic;
c5_p1_wr_count : out std_logic_vector(6 downto 0);
c5_p1_wr_underrun : out std_logic;
c5_p1_wr_error : out std_logic;
c5_p1_rd_clk : in std_logic;
c5_p1_rd_en : in std_logic;
c5_p1_rd_data : out std_logic_vector(C5_P1_DATA_PORT_SIZE - 1 downto 0);
c5_p1_rd_full : out std_logic;
c5_p1_rd_empty : out std_logic;
c5_p1_rd_count : out std_logic_vector(6 downto 0);
c5_p1_rd_overflow : out std_logic;
c5_p1_rd_error : out std_logic
);
end component ddr3_ctrl_svec_bank5_64b_32b;
----------------------------------------------------------------------------
-- VFC
----------------------------------------------------------------------------
component ddr3_ctrl_vfc_bank1_32b_32b
generic
(
C1_P0_MASK_SIZE : integer := 4;
C1_P0_DATA_PORT_SIZE : integer := 32;
C1_P1_MASK_SIZE : integer := 4;
C1_P1_DATA_PORT_SIZE : integer := 32;
C1_MEMCLK_PERIOD : integer := 3000;
C1_RST_ACT_LOW : integer := 0;
C1_INPUT_CLK_TYPE : string := "SINGLE_ENDED";
C1_CALIB_SOFT_IP : string := "TRUE";
C1_SIMULATION : string := "FALSE";
DEBUG_EN : integer := 0;
C1_MEM_ADDR_ORDER : string := "ROW_BANK_COLUMN";
C1_NUM_DQ_PINS : integer := 16;
C1_MEM_ADDR_WIDTH : integer := 14;
C1_MEM_BANKADDR_WIDTH : integer := 3
);
port
(
mcb1_dram_dq : inout std_logic_vector(C1_NUM_DQ_PINS-1 downto 0);
mcb1_dram_a : out std_logic_vector(C1_MEM_ADDR_WIDTH-1 downto 0);
mcb1_dram_ba : out std_logic_vector(C1_MEM_BANKADDR_WIDTH-1 downto 0);
mcb1_dram_ras_n : out std_logic;
mcb1_dram_cas_n : out std_logic;
mcb1_dram_we_n : out std_logic;
mcb1_dram_odt : out std_logic;
mcb1_dram_reset_n : out std_logic;
mcb1_dram_cke : out std_logic;
mcb1_dram_dm : out std_logic;
mcb1_dram_udqs : inout std_logic;
mcb1_dram_udqs_n : inout std_logic;
mcb1_rzq : inout std_logic;
mcb1_dram_udm : out std_logic;
c1_sys_clk : in std_logic;
c1_sys_rst_i : in std_logic;
c1_calib_done : out std_logic;
c1_clk0 : out std_logic;
c1_rst0 : out std_logic;
mcb1_dram_dqs : inout std_logic;
mcb1_dram_dqs_n : inout std_logic;
mcb1_dram_ck : out std_logic;
mcb1_dram_ck_n : out std_logic;
c1_p0_cmd_clk : in std_logic;
c1_p0_cmd_en : in std_logic;
c1_p0_cmd_instr : in std_logic_vector(2 downto 0);
c1_p0_cmd_bl : in std_logic_vector(5 downto 0);
c1_p0_cmd_byte_addr : in std_logic_vector(29 downto 0);
c1_p0_cmd_empty : out std_logic;
c1_p0_cmd_full : out std_logic;
c1_p0_wr_clk : in std_logic;
c1_p0_wr_en : in std_logic;
c1_p0_wr_mask : in std_logic_vector(C1_P0_MASK_SIZE - 1 downto 0);
c1_p0_wr_data : in std_logic_vector(C1_P0_DATA_PORT_SIZE - 1 downto 0);
c1_p0_wr_full : out std_logic;
c1_p0_wr_empty : out std_logic;
c1_p0_wr_count : out std_logic_vector(6 downto 0);
c1_p0_wr_underrun : out std_logic;
c1_p0_wr_error : out std_logic;
c1_p0_rd_clk : in std_logic;
c1_p0_rd_en : in std_logic;
c1_p0_rd_data : out std_logic_vector(C1_P0_DATA_PORT_SIZE - 1 downto 0);
c1_p0_rd_full : out std_logic;
c1_p0_rd_empty : out std_logic;
c1_p0_rd_count : out std_logic_vector(6 downto 0);
c1_p0_rd_overflow : out std_logic;
c1_p0_rd_error : out std_logic;
c1_p1_cmd_clk : in std_logic;
c1_p1_cmd_en : in std_logic;
c1_p1_cmd_instr : in std_logic_vector(2 downto 0);
c1_p1_cmd_bl : in std_logic_vector(5 downto 0);
c1_p1_cmd_byte_addr : in std_logic_vector(29 downto 0);
c1_p1_cmd_empty : out std_logic;
c1_p1_cmd_full : out std_logic;
c1_p1_wr_clk : in std_logic;
c1_p1_wr_en : in std_logic;
c1_p1_wr_mask : in std_logic_vector(C1_P1_MASK_SIZE - 1 downto 0);
c1_p1_wr_data : in std_logic_vector(C1_P1_DATA_PORT_SIZE - 1 downto 0);
c1_p1_wr_full : out std_logic;
c1_p1_wr_empty : out std_logic;
c1_p1_wr_count : out std_logic_vector(6 downto 0);
c1_p1_wr_underrun : out std_logic;
c1_p1_wr_error : out std_logic;
c1_p1_rd_clk : in std_logic;
c1_p1_rd_en : in std_logic;
c1_p1_rd_data : out std_logic_vector(C1_P1_DATA_PORT_SIZE - 1 downto 0);
c1_p1_rd_full : out std_logic;
c1_p1_rd_empty : out std_logic;
c1_p1_rd_count : out std_logic_vector(6 downto 0);
c1_p1_rd_overflow : out std_logic;
c1_p1_rd_error : out std_logic
);
end component ddr3_ctrl_vfc_bank1_32b_32b;
component ddr3_ctrl_vfc_bank1_64b_32b
generic
(
C1_P0_MASK_SIZE : integer := 8;
C1_P0_DATA_PORT_SIZE : integer := 64;
C1_P1_MASK_SIZE : integer := 4;
C1_P1_DATA_PORT_SIZE : integer := 32;
C1_MEMCLK_PERIOD : integer := 3000;
C1_RST_ACT_LOW : integer := 0;
C1_INPUT_CLK_TYPE : string := "SINGLE_ENDED";
C1_CALIB_SOFT_IP : string := "TRUE";
C1_SIMULATION : string := "FALSE";
DEBUG_EN : integer := 0;
C1_MEM_ADDR_ORDER : string := "ROW_BANK_COLUMN";
C1_NUM_DQ_PINS : integer := 16;
C1_MEM_ADDR_WIDTH : integer := 14;
C1_MEM_BANKADDR_WIDTH : integer := 3
);
port
(
mcb1_dram_dq : inout std_logic_vector(C1_NUM_DQ_PINS-1 downto 0);
mcb1_dram_a : out std_logic_vector(C1_MEM_ADDR_WIDTH-1 downto 0);
mcb1_dram_ba : out std_logic_vector(C1_MEM_BANKADDR_WIDTH-1 downto 0);
mcb1_dram_ras_n : out std_logic;
mcb1_dram_cas_n : out std_logic;
mcb1_dram_we_n : out std_logic;
mcb1_dram_odt : out std_logic;
mcb1_dram_reset_n : out std_logic;
mcb1_dram_cke : out std_logic;
mcb1_dram_dm : out std_logic;
mcb1_dram_udqs : inout std_logic;
mcb1_dram_udqs_n : inout std_logic;
mcb1_rzq : inout std_logic;
mcb1_dram_udm : out std_logic;
c1_sys_clk : in std_logic;
c1_sys_rst_i : in std_logic;
c1_calib_done : out std_logic;
c1_clk0 : out std_logic;
c1_rst0 : out std_logic;
mcb1_dram_dqs : inout std_logic;
mcb1_dram_dqs_n : inout std_logic;
mcb1_dram_ck : out std_logic;
mcb1_dram_ck_n : out std_logic;
c1_p0_cmd_clk : in std_logic;
c1_p0_cmd_en : in std_logic;
c1_p0_cmd_instr : in std_logic_vector(2 downto 0);
c1_p0_cmd_bl : in std_logic_vector(5 downto 0);
c1_p0_cmd_byte_addr : in std_logic_vector(29 downto 0);
c1_p0_cmd_empty : out std_logic;
c1_p0_cmd_full : out std_logic;
c1_p0_wr_clk : in std_logic;
c1_p0_wr_en : in std_logic;
c1_p0_wr_mask : in std_logic_vector(C1_P0_MASK_SIZE - 1 downto 0);
c1_p0_wr_data : in std_logic_vector(C1_P0_DATA_PORT_SIZE - 1 downto 0);
c1_p0_wr_full : out std_logic;
c1_p0_wr_empty : out std_logic;
c1_p0_wr_count : out std_logic_vector(6 downto 0);
c1_p0_wr_underrun : out std_logic;
c1_p0_wr_error : out std_logic;
c1_p0_rd_clk : in std_logic;
c1_p0_rd_en : in std_logic;
c1_p0_rd_data : out std_logic_vector(C1_P0_DATA_PORT_SIZE - 1 downto 0);
c1_p0_rd_full : out std_logic;
c1_p0_rd_empty : out std_logic;
c1_p0_rd_count : out std_logic_vector(6 downto 0);
c1_p0_rd_overflow : out std_logic;
c1_p0_rd_error : out std_logic;
c1_p1_cmd_clk : in std_logic;
c1_p1_cmd_en : in std_logic;
c1_p1_cmd_instr : in std_logic_vector(2 downto 0);
c1_p1_cmd_bl : in std_logic_vector(5 downto 0);
c1_p1_cmd_byte_addr : in std_logic_vector(29 downto 0);
c1_p1_cmd_empty : out std_logic;
c1_p1_cmd_full : out std_logic;
c1_p1_wr_clk : in std_logic;
c1_p1_wr_en : in std_logic;
c1_p1_wr_mask : in std_logic_vector(C1_P1_MASK_SIZE - 1 downto 0);
c1_p1_wr_data : in std_logic_vector(C1_P1_DATA_PORT_SIZE - 1 downto 0);
c1_p1_wr_full : out std_logic;
c1_p1_wr_empty : out std_logic;
c1_p1_wr_count : out std_logic_vector(6 downto 0);
c1_p1_wr_underrun : out std_logic;
c1_p1_wr_error : out std_logic;
c1_p1_rd_clk : in std_logic;
c1_p1_rd_en : in std_logic;
c1_p1_rd_data : out std_logic_vector(C1_P1_DATA_PORT_SIZE - 1 downto 0);
c1_p1_rd_full : out std_logic;
c1_p1_rd_empty : out std_logic;
c1_p1_rd_count : out std_logic_vector(6 downto 0);
c1_p1_rd_overflow : out std_logic;
c1_p1_rd_error : out std_logic
);
end component ddr3_ctrl_vfc_bank1_64b_32b;
end ddr3_ctrl_wrapper_pkg;
package body ddr3_ctrl_wrapper_pkg is
end ddr3_ctrl_wrapper_pkg;
|
--==============================================================================
--! @file ddr3_ctrl_wrapper_pkg.vhd
--==============================================================================
--! Standard library
library IEEE;
--! Standard packages
use IEEE.STD_LOGIC_1164.all;
use IEEE.NUMERIC_STD.all;
--! Specific packages
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
-- DDR3 Controller Wrapper Package
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--! @brief
--! DDR3 controller wrapper package
--------------------------------------------------------------------------------
--! @details
--! Contains DDR3 controller wrapper component declaration.
--! Component used in the wrapper are generated using Xilinx CoreGen.
--------------------------------------------------------------------------------
--! @version
--! 0.1 | mc | 06.07.2012 | File creation and Doxygen comments
--!
--! @author
--! mc : Matthieu Cattin, CERN (BE-CO-HT)
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
-- GNU LESSER GENERAL PUBLIC LICENSE
--------------------------------------------------------------------------------
-- This source file is free software; you can redistribute it and/or modify it
-- under the terms of the GNU Lesser General Public License as published by the
-- Free Software Foundation; either version 2.1 of the License, or (at your
-- option) any later version. This source is distributed in the hope that it
-- will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
-- of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-- See the GNU Lesser General Public License for more details. You should have
-- received a copy of the GNU Lesser General Public License along with this
-- source; if not, download it from http://www.gnu.org/licenses/lgpl-2.1.html
--------------------------------------------------------------------------------
--==============================================================================
--! Entity declaration for ddr3_ctrl_wrapper_pkg
--==============================================================================
package ddr3_ctrl_wrapper_pkg is
--============================================================================
--! Components declaration
--============================================================================
----------------------------------------------------------------------------
-- SPEC
----------------------------------------------------------------------------
component ddr3_ctrl_spec_bank3_32b_32b
generic
(C3_P0_MASK_SIZE : integer := 4;
C3_P0_DATA_PORT_SIZE : integer := 32;
C3_P1_MASK_SIZE : integer := 4;
C3_P1_DATA_PORT_SIZE : integer := 32;
C3_MEMCLK_PERIOD : integer := 3000;
C3_RST_ACT_LOW : integer := 1;
C3_INPUT_CLK_TYPE : string := "SINGLE_ENDED";
C3_CALIB_SOFT_IP : string := "TRUE";
C3_SIMULATION : string := "FALSE";
DEBUG_EN : integer := 0;
C3_MEM_ADDR_ORDER : string := "ROW_BANK_COLUMN";
C3_NUM_DQ_PINS : integer := 16;
C3_MEM_ADDR_WIDTH : integer := 14;
C3_MEM_BANKADDR_WIDTH : integer := 3
);
port
(mcb3_dram_dq : inout std_logic_vector(C3_NUM_DQ_PINS-1 downto 0);
mcb3_dram_a : out std_logic_vector(C3_MEM_ADDR_WIDTH-1 downto 0);
mcb3_dram_ba : out std_logic_vector(C3_MEM_BANKADDR_WIDTH-1 downto 0);
mcb3_dram_ras_n : out std_logic;
mcb3_dram_cas_n : out std_logic;
mcb3_dram_we_n : out std_logic;
mcb3_dram_odt : out std_logic;
mcb3_dram_reset_n : out std_logic;
mcb3_dram_cke : out std_logic;
mcb3_dram_dm : out std_logic;
mcb3_dram_udqs : inout std_logic;
mcb3_dram_udqs_n : inout std_logic;
mcb3_rzq : inout std_logic;
mcb3_dram_udm : out std_logic;
c3_sys_clk : in std_logic;
c3_sys_rst_i : in std_logic;
c3_calib_done : out std_logic;
c3_clk0 : out std_logic;
c3_rst0 : out std_logic;
mcb3_dram_dqs : inout std_logic;
mcb3_dram_dqs_n : inout std_logic;
mcb3_dram_ck : out std_logic;
mcb3_dram_ck_n : out std_logic;
c3_p0_cmd_clk : in std_logic;
c3_p0_cmd_en : in std_logic;
c3_p0_cmd_instr : in std_logic_vector(2 downto 0);
c3_p0_cmd_bl : in std_logic_vector(5 downto 0);
c3_p0_cmd_byte_addr : in std_logic_vector(29 downto 0);
c3_p0_cmd_empty : out std_logic;
c3_p0_cmd_full : out std_logic;
c3_p0_wr_clk : in std_logic;
c3_p0_wr_en : in std_logic;
c3_p0_wr_mask : in std_logic_vector(C3_P0_MASK_SIZE - 1 downto 0);
c3_p0_wr_data : in std_logic_vector(C3_P0_DATA_PORT_SIZE - 1 downto 0);
c3_p0_wr_full : out std_logic;
c3_p0_wr_empty : out std_logic;
c3_p0_wr_count : out std_logic_vector(6 downto 0);
c3_p0_wr_underrun : out std_logic;
c3_p0_wr_error : out std_logic;
c3_p0_rd_clk : in std_logic;
c3_p0_rd_en : in std_logic;
c3_p0_rd_data : out std_logic_vector(C3_P0_DATA_PORT_SIZE - 1 downto 0);
c3_p0_rd_full : out std_logic;
c3_p0_rd_empty : out std_logic;
c3_p0_rd_count : out std_logic_vector(6 downto 0);
c3_p0_rd_overflow : out std_logic;
c3_p0_rd_error : out std_logic;
c3_p1_cmd_clk : in std_logic;
c3_p1_cmd_en : in std_logic;
c3_p1_cmd_instr : in std_logic_vector(2 downto 0);
c3_p1_cmd_bl : in std_logic_vector(5 downto 0);
c3_p1_cmd_byte_addr : in std_logic_vector(29 downto 0);
c3_p1_cmd_empty : out std_logic;
c3_p1_cmd_full : out std_logic;
c3_p1_wr_clk : in std_logic;
c3_p1_wr_en : in std_logic;
c3_p1_wr_mask : in std_logic_vector(C3_P1_MASK_SIZE - 1 downto 0);
c3_p1_wr_data : in std_logic_vector(C3_P1_DATA_PORT_SIZE - 1 downto 0);
c3_p1_wr_full : out std_logic;
c3_p1_wr_empty : out std_logic;
c3_p1_wr_count : out std_logic_vector(6 downto 0);
c3_p1_wr_underrun : out std_logic;
c3_p1_wr_error : out std_logic;
c3_p1_rd_clk : in std_logic;
c3_p1_rd_en : in std_logic;
c3_p1_rd_data : out std_logic_vector(C3_P1_DATA_PORT_SIZE - 1 downto 0);
c3_p1_rd_full : out std_logic;
c3_p1_rd_empty : out std_logic;
c3_p1_rd_count : out std_logic_vector(6 downto 0);
c3_p1_rd_overflow : out std_logic;
c3_p1_rd_error : out std_logic
);
end component ddr3_ctrl_spec_bank3_32b_32b;
component ddr3_ctrl_spec_bank3_64b_32b
generic
(C3_P0_MASK_SIZE : integer := 8;
C3_P0_DATA_PORT_SIZE : integer := 64;
C3_P1_MASK_SIZE : integer := 4;
C3_P1_DATA_PORT_SIZE : integer := 32;
C3_MEMCLK_PERIOD : integer := 3000;
C3_RST_ACT_LOW : integer := 0;
C3_INPUT_CLK_TYPE : string := "SINGLE_ENDED";
C3_CALIB_SOFT_IP : string := "TRUE";
C3_SIMULATION : string := "FALSE";
DEBUG_EN : integer := 0;
C3_MEM_ADDR_ORDER : string := "ROW_BANK_COLUMN";
C3_NUM_DQ_PINS : integer := 16;
C3_MEM_ADDR_WIDTH : integer := 14;
C3_MEM_BANKADDR_WIDTH : integer := 3
);
port
(mcb3_dram_dq : inout std_logic_vector(C3_NUM_DQ_PINS-1 downto 0);
mcb3_dram_a : out std_logic_vector(C3_MEM_ADDR_WIDTH-1 downto 0);
mcb3_dram_ba : out std_logic_vector(C3_MEM_BANKADDR_WIDTH-1 downto 0);
mcb3_dram_ras_n : out std_logic;
mcb3_dram_cas_n : out std_logic;
mcb3_dram_we_n : out std_logic;
mcb3_dram_odt : out std_logic;
mcb3_dram_reset_n : out std_logic;
mcb3_dram_cke : out std_logic;
mcb3_dram_dm : out std_logic;
mcb3_dram_udqs : inout std_logic;
mcb3_dram_udqs_n : inout std_logic;
mcb3_rzq : inout std_logic;
mcb3_dram_udm : out std_logic;
c3_sys_clk : in std_logic;
c3_sys_rst_i : in std_logic;
c3_calib_done : out std_logic;
c3_clk0 : out std_logic;
c3_rst0 : out std_logic;
mcb3_dram_dqs : inout std_logic;
mcb3_dram_dqs_n : inout std_logic;
mcb3_dram_ck : out std_logic;
mcb3_dram_ck_n : out std_logic;
c3_p0_cmd_clk : in std_logic;
c3_p0_cmd_en : in std_logic;
c3_p0_cmd_instr : in std_logic_vector(2 downto 0);
c3_p0_cmd_bl : in std_logic_vector(5 downto 0);
c3_p0_cmd_byte_addr : in std_logic_vector(29 downto 0);
c3_p0_cmd_empty : out std_logic;
c3_p0_cmd_full : out std_logic;
c3_p0_wr_clk : in std_logic;
c3_p0_wr_en : in std_logic;
c3_p0_wr_mask : in std_logic_vector(C3_P0_MASK_SIZE - 1 downto 0);
c3_p0_wr_data : in std_logic_vector(C3_P0_DATA_PORT_SIZE - 1 downto 0);
c3_p0_wr_full : out std_logic;
c3_p0_wr_empty : out std_logic;
c3_p0_wr_count : out std_logic_vector(6 downto 0);
c3_p0_wr_underrun : out std_logic;
c3_p0_wr_error : out std_logic;
c3_p0_rd_clk : in std_logic;
c3_p0_rd_en : in std_logic;
c3_p0_rd_data : out std_logic_vector(C3_P0_DATA_PORT_SIZE - 1 downto 0);
c3_p0_rd_full : out std_logic;
c3_p0_rd_empty : out std_logic;
c3_p0_rd_count : out std_logic_vector(6 downto 0);
c3_p0_rd_overflow : out std_logic;
c3_p0_rd_error : out std_logic;
c3_p1_cmd_clk : in std_logic;
c3_p1_cmd_en : in std_logic;
c3_p1_cmd_instr : in std_logic_vector(2 downto 0);
c3_p1_cmd_bl : in std_logic_vector(5 downto 0);
c3_p1_cmd_byte_addr : in std_logic_vector(29 downto 0);
c3_p1_cmd_empty : out std_logic;
c3_p1_cmd_full : out std_logic;
c3_p1_wr_clk : in std_logic;
c3_p1_wr_en : in std_logic;
c3_p1_wr_mask : in std_logic_vector(C3_P1_MASK_SIZE - 1 downto 0);
c3_p1_wr_data : in std_logic_vector(C3_P1_DATA_PORT_SIZE - 1 downto 0);
c3_p1_wr_full : out std_logic;
c3_p1_wr_empty : out std_logic;
c3_p1_wr_count : out std_logic_vector(6 downto 0);
c3_p1_wr_underrun : out std_logic;
c3_p1_wr_error : out std_logic;
c3_p1_rd_clk : in std_logic;
c3_p1_rd_en : in std_logic;
c3_p1_rd_data : out std_logic_vector(C3_P1_DATA_PORT_SIZE - 1 downto 0);
c3_p1_rd_full : out std_logic;
c3_p1_rd_empty : out std_logic;
c3_p1_rd_count : out std_logic_vector(6 downto 0);
c3_p1_rd_overflow : out std_logic;
c3_p1_rd_error : out std_logic
);
end component ddr3_ctrl_spec_bank3_64b_32b;
----------------------------------------------------------------------------
-- SVEC
----------------------------------------------------------------------------
component ddr3_ctrl_svec_bank4_32b_32b
generic
(C4_P0_MASK_SIZE : integer := 4;
C4_P0_DATA_PORT_SIZE : integer := 32;
C4_P1_MASK_SIZE : integer := 4;
C4_P1_DATA_PORT_SIZE : integer := 32;
C4_MEMCLK_PERIOD : integer := 3000;
C4_RST_ACT_LOW : integer := 1;
C4_INPUT_CLK_TYPE : string := "SINGLE_ENDED";
C4_CALIB_SOFT_IP : string := "TRUE";
C4_SIMULATION : string := "FALSE";
DEBUG_EN : integer := 0;
C4_MEM_ADDR_ORDER : string := "ROW_BANK_COLUMN";
C4_NUM_DQ_PINS : integer := 16;
C4_MEM_ADDR_WIDTH : integer := 14;
C4_MEM_BANKADDR_WIDTH : integer := 3
);
port
(mcb4_dram_dq : inout std_logic_vector(C4_NUM_DQ_PINS-1 downto 0);
mcb4_dram_a : out std_logic_vector(C4_MEM_ADDR_WIDTH-1 downto 0);
mcb4_dram_ba : out std_logic_vector(C4_MEM_BANKADDR_WIDTH-1 downto 0);
mcb4_dram_ras_n : out std_logic;
mcb4_dram_cas_n : out std_logic;
mcb4_dram_we_n : out std_logic;
mcb4_dram_odt : out std_logic;
mcb4_dram_reset_n : out std_logic;
mcb4_dram_cke : out std_logic;
mcb4_dram_dm : out std_logic;
mcb4_dram_udqs : inout std_logic;
mcb4_dram_udqs_n : inout std_logic;
mcb4_rzq : inout std_logic;
mcb4_dram_udm : out std_logic;
c4_sys_clk : in std_logic;
c4_sys_rst_i : in std_logic;
c4_calib_done : out std_logic;
c4_clk0 : out std_logic;
c4_rst0 : out std_logic;
mcb4_dram_dqs : inout std_logic;
mcb4_dram_dqs_n : inout std_logic;
mcb4_dram_ck : out std_logic;
mcb4_dram_ck_n : out std_logic;
c4_p0_cmd_clk : in std_logic;
c4_p0_cmd_en : in std_logic;
c4_p0_cmd_instr : in std_logic_vector(2 downto 0);
c4_p0_cmd_bl : in std_logic_vector(5 downto 0);
c4_p0_cmd_byte_addr : in std_logic_vector(29 downto 0);
c4_p0_cmd_empty : out std_logic;
c4_p0_cmd_full : out std_logic;
c4_p0_wr_clk : in std_logic;
c4_p0_wr_en : in std_logic;
c4_p0_wr_mask : in std_logic_vector(C4_P0_MASK_SIZE - 1 downto 0);
c4_p0_wr_data : in std_logic_vector(C4_P0_DATA_PORT_SIZE - 1 downto 0);
c4_p0_wr_full : out std_logic;
c4_p0_wr_empty : out std_logic;
c4_p0_wr_count : out std_logic_vector(6 downto 0);
c4_p0_wr_underrun : out std_logic;
c4_p0_wr_error : out std_logic;
c4_p0_rd_clk : in std_logic;
c4_p0_rd_en : in std_logic;
c4_p0_rd_data : out std_logic_vector(C4_P0_DATA_PORT_SIZE - 1 downto 0);
c4_p0_rd_full : out std_logic;
c4_p0_rd_empty : out std_logic;
c4_p0_rd_count : out std_logic_vector(6 downto 0);
c4_p0_rd_overflow : out std_logic;
c4_p0_rd_error : out std_logic;
c4_p1_cmd_clk : in std_logic;
c4_p1_cmd_en : in std_logic;
c4_p1_cmd_instr : in std_logic_vector(2 downto 0);
c4_p1_cmd_bl : in std_logic_vector(5 downto 0);
c4_p1_cmd_byte_addr : in std_logic_vector(29 downto 0);
c4_p1_cmd_empty : out std_logic;
c4_p1_cmd_full : out std_logic;
c4_p1_wr_clk : in std_logic;
c4_p1_wr_en : in std_logic;
c4_p1_wr_mask : in std_logic_vector(C4_P1_MASK_SIZE - 1 downto 0);
c4_p1_wr_data : in std_logic_vector(C4_P1_DATA_PORT_SIZE - 1 downto 0);
c4_p1_wr_full : out std_logic;
c4_p1_wr_empty : out std_logic;
c4_p1_wr_count : out std_logic_vector(6 downto 0);
c4_p1_wr_underrun : out std_logic;
c4_p1_wr_error : out std_logic;
c4_p1_rd_clk : in std_logic;
c4_p1_rd_en : in std_logic;
c4_p1_rd_data : out std_logic_vector(C4_P1_DATA_PORT_SIZE - 1 downto 0);
c4_p1_rd_full : out std_logic;
c4_p1_rd_empty : out std_logic;
c4_p1_rd_count : out std_logic_vector(6 downto 0);
c4_p1_rd_overflow : out std_logic;
c4_p1_rd_error : out std_logic
);
end component ddr3_ctrl_svec_bank4_32b_32b;
component ddr3_ctrl_svec_bank4_64b_32b
generic
(C4_P0_MASK_SIZE : integer := 8;
C4_P0_DATA_PORT_SIZE : integer := 64;
C4_P1_MASK_SIZE : integer := 4;
C4_P1_DATA_PORT_SIZE : integer := 32;
C4_MEMCLK_PERIOD : integer := 3000;
C4_RST_ACT_LOW : integer := 1;
C4_INPUT_CLK_TYPE : string := "SINGLE_ENDED";
C4_CALIB_SOFT_IP : string := "TRUE";
C4_SIMULATION : string := "FALSE";
DEBUG_EN : integer := 0;
C4_MEM_ADDR_ORDER : string := "ROW_BANK_COLUMN";
C4_NUM_DQ_PINS : integer := 16;
C4_MEM_ADDR_WIDTH : integer := 14;
C4_MEM_BANKADDR_WIDTH : integer := 3
);
port
(mcb4_dram_dq : inout std_logic_vector(C4_NUM_DQ_PINS-1 downto 0);
mcb4_dram_a : out std_logic_vector(C4_MEM_ADDR_WIDTH-1 downto 0);
mcb4_dram_ba : out std_logic_vector(C4_MEM_BANKADDR_WIDTH-1 downto 0);
mcb4_dram_ras_n : out std_logic;
mcb4_dram_cas_n : out std_logic;
mcb4_dram_we_n : out std_logic;
mcb4_dram_odt : out std_logic;
mcb4_dram_reset_n : out std_logic;
mcb4_dram_cke : out std_logic;
mcb4_dram_dm : out std_logic;
mcb4_dram_udqs : inout std_logic;
mcb4_dram_udqs_n : inout std_logic;
mcb4_rzq : inout std_logic;
mcb4_dram_udm : out std_logic;
c4_sys_clk : in std_logic;
c4_sys_rst_i : in std_logic;
c4_calib_done : out std_logic;
c4_clk0 : out std_logic;
c4_rst0 : out std_logic;
mcb4_dram_dqs : inout std_logic;
mcb4_dram_dqs_n : inout std_logic;
mcb4_dram_ck : out std_logic;
mcb4_dram_ck_n : out std_logic;
c4_p0_cmd_clk : in std_logic;
c4_p0_cmd_en : in std_logic;
c4_p0_cmd_instr : in std_logic_vector(2 downto 0);
c4_p0_cmd_bl : in std_logic_vector(5 downto 0);
c4_p0_cmd_byte_addr : in std_logic_vector(29 downto 0);
c4_p0_cmd_empty : out std_logic;
c4_p0_cmd_full : out std_logic;
c4_p0_wr_clk : in std_logic;
c4_p0_wr_en : in std_logic;
c4_p0_wr_mask : in std_logic_vector(C4_P0_MASK_SIZE - 1 downto 0);
c4_p0_wr_data : in std_logic_vector(C4_P0_DATA_PORT_SIZE - 1 downto 0);
c4_p0_wr_full : out std_logic;
c4_p0_wr_empty : out std_logic;
c4_p0_wr_count : out std_logic_vector(6 downto 0);
c4_p0_wr_underrun : out std_logic;
c4_p0_wr_error : out std_logic;
c4_p0_rd_clk : in std_logic;
c4_p0_rd_en : in std_logic;
c4_p0_rd_data : out std_logic_vector(C4_P0_DATA_PORT_SIZE - 1 downto 0);
c4_p0_rd_full : out std_logic;
c4_p0_rd_empty : out std_logic;
c4_p0_rd_count : out std_logic_vector(6 downto 0);
c4_p0_rd_overflow : out std_logic;
c4_p0_rd_error : out std_logic;
c4_p1_cmd_clk : in std_logic;
c4_p1_cmd_en : in std_logic;
c4_p1_cmd_instr : in std_logic_vector(2 downto 0);
c4_p1_cmd_bl : in std_logic_vector(5 downto 0);
c4_p1_cmd_byte_addr : in std_logic_vector(29 downto 0);
c4_p1_cmd_empty : out std_logic;
c4_p1_cmd_full : out std_logic;
c4_p1_wr_clk : in std_logic;
c4_p1_wr_en : in std_logic;
c4_p1_wr_mask : in std_logic_vector(C4_P1_MASK_SIZE - 1 downto 0);
c4_p1_wr_data : in std_logic_vector(C4_P1_DATA_PORT_SIZE - 1 downto 0);
c4_p1_wr_full : out std_logic;
c4_p1_wr_empty : out std_logic;
c4_p1_wr_count : out std_logic_vector(6 downto 0);
c4_p1_wr_underrun : out std_logic;
c4_p1_wr_error : out std_logic;
c4_p1_rd_clk : in std_logic;
c4_p1_rd_en : in std_logic;
c4_p1_rd_data : out std_logic_vector(C4_P1_DATA_PORT_SIZE - 1 downto 0);
c4_p1_rd_full : out std_logic;
c4_p1_rd_empty : out std_logic;
c4_p1_rd_count : out std_logic_vector(6 downto 0);
c4_p1_rd_overflow : out std_logic;
c4_p1_rd_error : out std_logic
);
end component ddr3_ctrl_svec_bank4_64b_32b;
component ddr3_ctrl_svec_bank5_32b_32b
generic
(C5_P0_MASK_SIZE : integer := 4;
C5_P0_DATA_PORT_SIZE : integer := 32;
C5_P1_MASK_SIZE : integer := 4;
C5_P1_DATA_PORT_SIZE : integer := 32;
C5_MEMCLK_PERIOD : integer := 3000;
C5_RST_ACT_LOW : integer := 1;
C5_INPUT_CLK_TYPE : string := "SINGLE_ENDED";
C5_CALIB_SOFT_IP : string := "TRUE";
C5_SIMULATION : string := "FALSE";
DEBUG_EN : integer := 0;
C5_MEM_ADDR_ORDER : string := "ROW_BANK_COLUMN";
C5_NUM_DQ_PINS : integer := 16;
C5_MEM_ADDR_WIDTH : integer := 14;
C5_MEM_BANKADDR_WIDTH : integer := 3
);
port
(mcb5_dram_dq : inout std_logic_vector(C5_NUM_DQ_PINS-1 downto 0);
mcb5_dram_a : out std_logic_vector(C5_MEM_ADDR_WIDTH-1 downto 0);
mcb5_dram_ba : out std_logic_vector(C5_MEM_BANKADDR_WIDTH-1 downto 0);
mcb5_dram_ras_n : out std_logic;
mcb5_dram_cas_n : out std_logic;
mcb5_dram_we_n : out std_logic;
mcb5_dram_odt : out std_logic;
mcb5_dram_reset_n : out std_logic;
mcb5_dram_cke : out std_logic;
mcb5_dram_dm : out std_logic;
mcb5_dram_udqs : inout std_logic;
mcb5_dram_udqs_n : inout std_logic;
mcb5_rzq : inout std_logic;
mcb5_dram_udm : out std_logic;
c5_sys_clk : in std_logic;
c5_sys_rst_i : in std_logic;
c5_calib_done : out std_logic;
c5_clk0 : out std_logic;
c5_rst0 : out std_logic;
mcb5_dram_dqs : inout std_logic;
mcb5_dram_dqs_n : inout std_logic;
mcb5_dram_ck : out std_logic;
mcb5_dram_ck_n : out std_logic;
c5_p0_cmd_clk : in std_logic;
c5_p0_cmd_en : in std_logic;
c5_p0_cmd_instr : in std_logic_vector(2 downto 0);
c5_p0_cmd_bl : in std_logic_vector(5 downto 0);
c5_p0_cmd_byte_addr : in std_logic_vector(29 downto 0);
c5_p0_cmd_empty : out std_logic;
c5_p0_cmd_full : out std_logic;
c5_p0_wr_clk : in std_logic;
c5_p0_wr_en : in std_logic;
c5_p0_wr_mask : in std_logic_vector(C5_P0_MASK_SIZE - 1 downto 0);
c5_p0_wr_data : in std_logic_vector(C5_P0_DATA_PORT_SIZE - 1 downto 0);
c5_p0_wr_full : out std_logic;
c5_p0_wr_empty : out std_logic;
c5_p0_wr_count : out std_logic_vector(6 downto 0);
c5_p0_wr_underrun : out std_logic;
c5_p0_wr_error : out std_logic;
c5_p0_rd_clk : in std_logic;
c5_p0_rd_en : in std_logic;
c5_p0_rd_data : out std_logic_vector(C5_P0_DATA_PORT_SIZE - 1 downto 0);
c5_p0_rd_full : out std_logic;
c5_p0_rd_empty : out std_logic;
c5_p0_rd_count : out std_logic_vector(6 downto 0);
c5_p0_rd_overflow : out std_logic;
c5_p0_rd_error : out std_logic;
c5_p1_cmd_clk : in std_logic;
c5_p1_cmd_en : in std_logic;
c5_p1_cmd_instr : in std_logic_vector(2 downto 0);
c5_p1_cmd_bl : in std_logic_vector(5 downto 0);
c5_p1_cmd_byte_addr : in std_logic_vector(29 downto 0);
c5_p1_cmd_empty : out std_logic;
c5_p1_cmd_full : out std_logic;
c5_p1_wr_clk : in std_logic;
c5_p1_wr_en : in std_logic;
c5_p1_wr_mask : in std_logic_vector(C5_P1_MASK_SIZE - 1 downto 0);
c5_p1_wr_data : in std_logic_vector(C5_P1_DATA_PORT_SIZE - 1 downto 0);
c5_p1_wr_full : out std_logic;
c5_p1_wr_empty : out std_logic;
c5_p1_wr_count : out std_logic_vector(6 downto 0);
c5_p1_wr_underrun : out std_logic;
c5_p1_wr_error : out std_logic;
c5_p1_rd_clk : in std_logic;
c5_p1_rd_en : in std_logic;
c5_p1_rd_data : out std_logic_vector(C5_P1_DATA_PORT_SIZE - 1 downto 0);
c5_p1_rd_full : out std_logic;
c5_p1_rd_empty : out std_logic;
c5_p1_rd_count : out std_logic_vector(6 downto 0);
c5_p1_rd_overflow : out std_logic;
c5_p1_rd_error : out std_logic
);
end component ddr3_ctrl_svec_bank5_32b_32b;
component ddr3_ctrl_svec_bank5_64b_32b
generic
(C5_P0_MASK_SIZE : integer := 8;
C5_P0_DATA_PORT_SIZE : integer := 64;
C5_P1_MASK_SIZE : integer := 4;
C5_P1_DATA_PORT_SIZE : integer := 32;
C5_MEMCLK_PERIOD : integer := 3000;
C5_RST_ACT_LOW : integer := 1;
C5_INPUT_CLK_TYPE : string := "SINGLE_ENDED";
C5_CALIB_SOFT_IP : string := "TRUE";
C5_SIMULATION : string := "FALSE";
DEBUG_EN : integer := 0;
C5_MEM_ADDR_ORDER : string := "ROW_BANK_COLUMN";
C5_NUM_DQ_PINS : integer := 16;
C5_MEM_ADDR_WIDTH : integer := 14;
C5_MEM_BANKADDR_WIDTH : integer := 3
);
port
(mcb5_dram_dq : inout std_logic_vector(C5_NUM_DQ_PINS-1 downto 0);
mcb5_dram_a : out std_logic_vector(C5_MEM_ADDR_WIDTH-1 downto 0);
mcb5_dram_ba : out std_logic_vector(C5_MEM_BANKADDR_WIDTH-1 downto 0);
mcb5_dram_ras_n : out std_logic;
mcb5_dram_cas_n : out std_logic;
mcb5_dram_we_n : out std_logic;
mcb5_dram_odt : out std_logic;
mcb5_dram_reset_n : out std_logic;
mcb5_dram_cke : out std_logic;
mcb5_dram_dm : out std_logic;
mcb5_dram_udqs : inout std_logic;
mcb5_dram_udqs_n : inout std_logic;
mcb5_rzq : inout std_logic;
mcb5_dram_udm : out std_logic;
c5_sys_clk : in std_logic;
c5_sys_rst_i : in std_logic;
c5_calib_done : out std_logic;
c5_clk0 : out std_logic;
c5_rst0 : out std_logic;
mcb5_dram_dqs : inout std_logic;
mcb5_dram_dqs_n : inout std_logic;
mcb5_dram_ck : out std_logic;
mcb5_dram_ck_n : out std_logic;
c5_p0_cmd_clk : in std_logic;
c5_p0_cmd_en : in std_logic;
c5_p0_cmd_instr : in std_logic_vector(2 downto 0);
c5_p0_cmd_bl : in std_logic_vector(5 downto 0);
c5_p0_cmd_byte_addr : in std_logic_vector(29 downto 0);
c5_p0_cmd_empty : out std_logic;
c5_p0_cmd_full : out std_logic;
c5_p0_wr_clk : in std_logic;
c5_p0_wr_en : in std_logic;
c5_p0_wr_mask : in std_logic_vector(C5_P0_MASK_SIZE - 1 downto 0);
c5_p0_wr_data : in std_logic_vector(C5_P0_DATA_PORT_SIZE - 1 downto 0);
c5_p0_wr_full : out std_logic;
c5_p0_wr_empty : out std_logic;
c5_p0_wr_count : out std_logic_vector(6 downto 0);
c5_p0_wr_underrun : out std_logic;
c5_p0_wr_error : out std_logic;
c5_p0_rd_clk : in std_logic;
c5_p0_rd_en : in std_logic;
c5_p0_rd_data : out std_logic_vector(C5_P0_DATA_PORT_SIZE - 1 downto 0);
c5_p0_rd_full : out std_logic;
c5_p0_rd_empty : out std_logic;
c5_p0_rd_count : out std_logic_vector(6 downto 0);
c5_p0_rd_overflow : out std_logic;
c5_p0_rd_error : out std_logic;
c5_p1_cmd_clk : in std_logic;
c5_p1_cmd_en : in std_logic;
c5_p1_cmd_instr : in std_logic_vector(2 downto 0);
c5_p1_cmd_bl : in std_logic_vector(5 downto 0);
c5_p1_cmd_byte_addr : in std_logic_vector(29 downto 0);
c5_p1_cmd_empty : out std_logic;
c5_p1_cmd_full : out std_logic;
c5_p1_wr_clk : in std_logic;
c5_p1_wr_en : in std_logic;
c5_p1_wr_mask : in std_logic_vector(C5_P1_MASK_SIZE - 1 downto 0);
c5_p1_wr_data : in std_logic_vector(C5_P1_DATA_PORT_SIZE - 1 downto 0);
c5_p1_wr_full : out std_logic;
c5_p1_wr_empty : out std_logic;
c5_p1_wr_count : out std_logic_vector(6 downto 0);
c5_p1_wr_underrun : out std_logic;
c5_p1_wr_error : out std_logic;
c5_p1_rd_clk : in std_logic;
c5_p1_rd_en : in std_logic;
c5_p1_rd_data : out std_logic_vector(C5_P1_DATA_PORT_SIZE - 1 downto 0);
c5_p1_rd_full : out std_logic;
c5_p1_rd_empty : out std_logic;
c5_p1_rd_count : out std_logic_vector(6 downto 0);
c5_p1_rd_overflow : out std_logic;
c5_p1_rd_error : out std_logic
);
end component ddr3_ctrl_svec_bank5_64b_32b;
----------------------------------------------------------------------------
-- VFC
----------------------------------------------------------------------------
component ddr3_ctrl_vfc_bank1_32b_32b
generic
(
C1_P0_MASK_SIZE : integer := 4;
C1_P0_DATA_PORT_SIZE : integer := 32;
C1_P1_MASK_SIZE : integer := 4;
C1_P1_DATA_PORT_SIZE : integer := 32;
C1_MEMCLK_PERIOD : integer := 3000;
C1_RST_ACT_LOW : integer := 0;
C1_INPUT_CLK_TYPE : string := "SINGLE_ENDED";
C1_CALIB_SOFT_IP : string := "TRUE";
C1_SIMULATION : string := "FALSE";
DEBUG_EN : integer := 0;
C1_MEM_ADDR_ORDER : string := "ROW_BANK_COLUMN";
C1_NUM_DQ_PINS : integer := 16;
C1_MEM_ADDR_WIDTH : integer := 14;
C1_MEM_BANKADDR_WIDTH : integer := 3
);
port
(
mcb1_dram_dq : inout std_logic_vector(C1_NUM_DQ_PINS-1 downto 0);
mcb1_dram_a : out std_logic_vector(C1_MEM_ADDR_WIDTH-1 downto 0);
mcb1_dram_ba : out std_logic_vector(C1_MEM_BANKADDR_WIDTH-1 downto 0);
mcb1_dram_ras_n : out std_logic;
mcb1_dram_cas_n : out std_logic;
mcb1_dram_we_n : out std_logic;
mcb1_dram_odt : out std_logic;
mcb1_dram_reset_n : out std_logic;
mcb1_dram_cke : out std_logic;
mcb1_dram_dm : out std_logic;
mcb1_dram_udqs : inout std_logic;
mcb1_dram_udqs_n : inout std_logic;
mcb1_rzq : inout std_logic;
mcb1_dram_udm : out std_logic;
c1_sys_clk : in std_logic;
c1_sys_rst_i : in std_logic;
c1_calib_done : out std_logic;
c1_clk0 : out std_logic;
c1_rst0 : out std_logic;
mcb1_dram_dqs : inout std_logic;
mcb1_dram_dqs_n : inout std_logic;
mcb1_dram_ck : out std_logic;
mcb1_dram_ck_n : out std_logic;
c1_p0_cmd_clk : in std_logic;
c1_p0_cmd_en : in std_logic;
c1_p0_cmd_instr : in std_logic_vector(2 downto 0);
c1_p0_cmd_bl : in std_logic_vector(5 downto 0);
c1_p0_cmd_byte_addr : in std_logic_vector(29 downto 0);
c1_p0_cmd_empty : out std_logic;
c1_p0_cmd_full : out std_logic;
c1_p0_wr_clk : in std_logic;
c1_p0_wr_en : in std_logic;
c1_p0_wr_mask : in std_logic_vector(C1_P0_MASK_SIZE - 1 downto 0);
c1_p0_wr_data : in std_logic_vector(C1_P0_DATA_PORT_SIZE - 1 downto 0);
c1_p0_wr_full : out std_logic;
c1_p0_wr_empty : out std_logic;
c1_p0_wr_count : out std_logic_vector(6 downto 0);
c1_p0_wr_underrun : out std_logic;
c1_p0_wr_error : out std_logic;
c1_p0_rd_clk : in std_logic;
c1_p0_rd_en : in std_logic;
c1_p0_rd_data : out std_logic_vector(C1_P0_DATA_PORT_SIZE - 1 downto 0);
c1_p0_rd_full : out std_logic;
c1_p0_rd_empty : out std_logic;
c1_p0_rd_count : out std_logic_vector(6 downto 0);
c1_p0_rd_overflow : out std_logic;
c1_p0_rd_error : out std_logic;
c1_p1_cmd_clk : in std_logic;
c1_p1_cmd_en : in std_logic;
c1_p1_cmd_instr : in std_logic_vector(2 downto 0);
c1_p1_cmd_bl : in std_logic_vector(5 downto 0);
c1_p1_cmd_byte_addr : in std_logic_vector(29 downto 0);
c1_p1_cmd_empty : out std_logic;
c1_p1_cmd_full : out std_logic;
c1_p1_wr_clk : in std_logic;
c1_p1_wr_en : in std_logic;
c1_p1_wr_mask : in std_logic_vector(C1_P1_MASK_SIZE - 1 downto 0);
c1_p1_wr_data : in std_logic_vector(C1_P1_DATA_PORT_SIZE - 1 downto 0);
c1_p1_wr_full : out std_logic;
c1_p1_wr_empty : out std_logic;
c1_p1_wr_count : out std_logic_vector(6 downto 0);
c1_p1_wr_underrun : out std_logic;
c1_p1_wr_error : out std_logic;
c1_p1_rd_clk : in std_logic;
c1_p1_rd_en : in std_logic;
c1_p1_rd_data : out std_logic_vector(C1_P1_DATA_PORT_SIZE - 1 downto 0);
c1_p1_rd_full : out std_logic;
c1_p1_rd_empty : out std_logic;
c1_p1_rd_count : out std_logic_vector(6 downto 0);
c1_p1_rd_overflow : out std_logic;
c1_p1_rd_error : out std_logic
);
end component ddr3_ctrl_vfc_bank1_32b_32b;
component ddr3_ctrl_vfc_bank1_64b_32b
generic
(
C1_P0_MASK_SIZE : integer := 8;
C1_P0_DATA_PORT_SIZE : integer := 64;
C1_P1_MASK_SIZE : integer := 4;
C1_P1_DATA_PORT_SIZE : integer := 32;
C1_MEMCLK_PERIOD : integer := 3000;
C1_RST_ACT_LOW : integer := 0;
C1_INPUT_CLK_TYPE : string := "SINGLE_ENDED";
C1_CALIB_SOFT_IP : string := "TRUE";
C1_SIMULATION : string := "FALSE";
DEBUG_EN : integer := 0;
C1_MEM_ADDR_ORDER : string := "ROW_BANK_COLUMN";
C1_NUM_DQ_PINS : integer := 16;
C1_MEM_ADDR_WIDTH : integer := 14;
C1_MEM_BANKADDR_WIDTH : integer := 3
);
port
(
mcb1_dram_dq : inout std_logic_vector(C1_NUM_DQ_PINS-1 downto 0);
mcb1_dram_a : out std_logic_vector(C1_MEM_ADDR_WIDTH-1 downto 0);
mcb1_dram_ba : out std_logic_vector(C1_MEM_BANKADDR_WIDTH-1 downto 0);
mcb1_dram_ras_n : out std_logic;
mcb1_dram_cas_n : out std_logic;
mcb1_dram_we_n : out std_logic;
mcb1_dram_odt : out std_logic;
mcb1_dram_reset_n : out std_logic;
mcb1_dram_cke : out std_logic;
mcb1_dram_dm : out std_logic;
mcb1_dram_udqs : inout std_logic;
mcb1_dram_udqs_n : inout std_logic;
mcb1_rzq : inout std_logic;
mcb1_dram_udm : out std_logic;
c1_sys_clk : in std_logic;
c1_sys_rst_i : in std_logic;
c1_calib_done : out std_logic;
c1_clk0 : out std_logic;
c1_rst0 : out std_logic;
mcb1_dram_dqs : inout std_logic;
mcb1_dram_dqs_n : inout std_logic;
mcb1_dram_ck : out std_logic;
mcb1_dram_ck_n : out std_logic;
c1_p0_cmd_clk : in std_logic;
c1_p0_cmd_en : in std_logic;
c1_p0_cmd_instr : in std_logic_vector(2 downto 0);
c1_p0_cmd_bl : in std_logic_vector(5 downto 0);
c1_p0_cmd_byte_addr : in std_logic_vector(29 downto 0);
c1_p0_cmd_empty : out std_logic;
c1_p0_cmd_full : out std_logic;
c1_p0_wr_clk : in std_logic;
c1_p0_wr_en : in std_logic;
c1_p0_wr_mask : in std_logic_vector(C1_P0_MASK_SIZE - 1 downto 0);
c1_p0_wr_data : in std_logic_vector(C1_P0_DATA_PORT_SIZE - 1 downto 0);
c1_p0_wr_full : out std_logic;
c1_p0_wr_empty : out std_logic;
c1_p0_wr_count : out std_logic_vector(6 downto 0);
c1_p0_wr_underrun : out std_logic;
c1_p0_wr_error : out std_logic;
c1_p0_rd_clk : in std_logic;
c1_p0_rd_en : in std_logic;
c1_p0_rd_data : out std_logic_vector(C1_P0_DATA_PORT_SIZE - 1 downto 0);
c1_p0_rd_full : out std_logic;
c1_p0_rd_empty : out std_logic;
c1_p0_rd_count : out std_logic_vector(6 downto 0);
c1_p0_rd_overflow : out std_logic;
c1_p0_rd_error : out std_logic;
c1_p1_cmd_clk : in std_logic;
c1_p1_cmd_en : in std_logic;
c1_p1_cmd_instr : in std_logic_vector(2 downto 0);
c1_p1_cmd_bl : in std_logic_vector(5 downto 0);
c1_p1_cmd_byte_addr : in std_logic_vector(29 downto 0);
c1_p1_cmd_empty : out std_logic;
c1_p1_cmd_full : out std_logic;
c1_p1_wr_clk : in std_logic;
c1_p1_wr_en : in std_logic;
c1_p1_wr_mask : in std_logic_vector(C1_P1_MASK_SIZE - 1 downto 0);
c1_p1_wr_data : in std_logic_vector(C1_P1_DATA_PORT_SIZE - 1 downto 0);
c1_p1_wr_full : out std_logic;
c1_p1_wr_empty : out std_logic;
c1_p1_wr_count : out std_logic_vector(6 downto 0);
c1_p1_wr_underrun : out std_logic;
c1_p1_wr_error : out std_logic;
c1_p1_rd_clk : in std_logic;
c1_p1_rd_en : in std_logic;
c1_p1_rd_data : out std_logic_vector(C1_P1_DATA_PORT_SIZE - 1 downto 0);
c1_p1_rd_full : out std_logic;
c1_p1_rd_empty : out std_logic;
c1_p1_rd_count : out std_logic_vector(6 downto 0);
c1_p1_rd_overflow : out std_logic;
c1_p1_rd_error : out std_logic
);
end component ddr3_ctrl_vfc_bank1_64b_32b;
end ddr3_ctrl_wrapper_pkg;
package body ddr3_ctrl_wrapper_pkg is
end ddr3_ctrl_wrapper_pkg;
|
library ieee;
use ieee.numeric_std.all;
use ieee.std_logic_1164.all;
-----------------------------------
--------------ENTITY---------------
-----------------------------------
entity audiostp_tb is
end audiostp_tb;
architecture test of audiostp_tb is
component audiostp
port (
sclk, fsync, sdata : in std_logic; -- Eingänge definieren
left, right : out signed (17 downto 0); -- 18 Bit Ausgabewerte
flag : out std_logic -- 1 Bit Ausgabeflag
);
end component;
signal sclk, fsync, sdata, flag: std_logic;
signal left, right: signed (17 downto 0);
begin
audioconverter: audiostp port map (sclk => sclk, fsync => fsync, sdata => sdata, flag => flag, left => left, right => right);
process begin
sclk <= 'X';
fsync <= 'X';
sdata <= 'X';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
------------------------
sclk <= '1';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '0';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '1';
wait for 1 ns;
sclk <= '1';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
sclk <= '0';
fsync <= '1';
sdata <= '0';
wait for 1 ns;
wait;
end process;
end test; |
-- Copyright (C) 1996 Morgan Kaufmann Publishers, Inc
-- This file is part of VESTs (Vhdl tESTs).
-- VESTs is free software; you can redistribute it and/or modify it
-- under the terms of the GNU General Public License as published by the
-- Free Software Foundation; either version 2 of the License, or (at
-- your option) any later version.
-- VESTs is distributed in the hope that it will be useful, but WITHOUT
-- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-- for more details.
-- You should have received a copy of the GNU General Public License
-- along with VESTs; if not, write to the Free Software Foundation,
-- Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-- ---------------------------------------------------------------------
--
-- $Id: ch_05_ch_05_03.vhd,v 1.1.1.1 2001-08-22 18:20:47 paw Exp $
-- $Revision: 1.1.1.1 $
--
-- ---------------------------------------------------------------------
entity and_or_inv is
port ( a1, a2, b1, b2 : in bit := '1';
y : out bit );
end entity and_or_inv;
|
-- Copyright (C) 1996 Morgan Kaufmann Publishers, Inc
-- This file is part of VESTs (Vhdl tESTs).
-- VESTs is free software; you can redistribute it and/or modify it
-- under the terms of the GNU General Public License as published by the
-- Free Software Foundation; either version 2 of the License, or (at
-- your option) any later version.
-- VESTs is distributed in the hope that it will be useful, but WITHOUT
-- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-- for more details.
-- You should have received a copy of the GNU General Public License
-- along with VESTs; if not, write to the Free Software Foundation,
-- Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-- ---------------------------------------------------------------------
--
-- $Id: ch_05_ch_05_03.vhd,v 1.1.1.1 2001-08-22 18:20:47 paw Exp $
-- $Revision: 1.1.1.1 $
--
-- ---------------------------------------------------------------------
entity and_or_inv is
port ( a1, a2, b1, b2 : in bit := '1';
y : out bit );
end entity and_or_inv;
|
-- Copyright (C) 1996 Morgan Kaufmann Publishers, Inc
-- This file is part of VESTs (Vhdl tESTs).
-- VESTs is free software; you can redistribute it and/or modify it
-- under the terms of the GNU General Public License as published by the
-- Free Software Foundation; either version 2 of the License, or (at
-- your option) any later version.
-- VESTs is distributed in the hope that it will be useful, but WITHOUT
-- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-- for more details.
-- You should have received a copy of the GNU General Public License
-- along with VESTs; if not, write to the Free Software Foundation,
-- Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-- ---------------------------------------------------------------------
--
-- $Id: ch_05_ch_05_03.vhd,v 1.1.1.1 2001-08-22 18:20:47 paw Exp $
-- $Revision: 1.1.1.1 $
--
-- ---------------------------------------------------------------------
entity and_or_inv is
port ( a1, a2, b1, b2 : in bit := '1';
y : out bit );
end entity and_or_inv;
|
-- megafunction wizard: %LPM_ADD_SUB%
-- GENERATION: STANDARD
-- VERSION: WM1.0
-- MODULE: lpm_add_sub
-- ============================================================
-- File Name: lpm_add_sub_oe0.vhd
-- Megafunction Name(s):
-- lpm_add_sub
--
-- Simulation Library Files(s):
-- lpm
-- ============================================================
-- ************************************************************
-- THIS IS A WIZARD-GENERATED FILE. DO NOT EDIT THIS FILE!
--
-- 9.1 Build 350 03/24/2010 SP 2 SJ Web Edition
-- ************************************************************
--Copyright (C) 1991-2010 Altera Corporation
--Your use of Altera Corporation's design tools, logic functions
--and other software and tools, and its AMPP partner logic
--functions, and any output files from any of the foregoing
--(including device programming or simulation files), and any
--associated documentation or information are expressly subject
--to the terms and conditions of the Altera Program License
--Subscription Agreement, Altera MegaCore Function License
--Agreement, or other applicable license agreement, including,
--without limitation, that your use is for the sole purpose of
--programming logic devices manufactured by Altera and sold by
--Altera or its authorized distributors. Please refer to the
--applicable agreement for further details.
LIBRARY ieee;
USE ieee.std_logic_1164.all;
LIBRARY lpm;
USE lpm.all;
ENTITY lpm_add_sub_oe0 IS
PORT
(
dataa : IN STD_LOGIC_VECTOR (31 DOWNTO 0);
datab : IN STD_LOGIC_VECTOR (31 DOWNTO 0);
result : OUT STD_LOGIC_VECTOR (31 DOWNTO 0)
);
END lpm_add_sub_oe0;
ARCHITECTURE SYN OF lpm_add_sub_oe0 IS
SIGNAL sub_wire0 : STD_LOGIC_VECTOR (31 DOWNTO 0);
COMPONENT lpm_add_sub
GENERIC (
lpm_direction : STRING;
lpm_hint : STRING;
lpm_representation : STRING;
lpm_type : STRING;
lpm_width : NATURAL
);
PORT (
dataa : IN STD_LOGIC_VECTOR (31 DOWNTO 0);
datab : IN STD_LOGIC_VECTOR (31 DOWNTO 0);
result : OUT STD_LOGIC_VECTOR (31 DOWNTO 0)
);
END COMPONENT;
BEGIN
result <= sub_wire0(31 DOWNTO 0);
lpm_add_sub_component : lpm_add_sub
GENERIC MAP (
lpm_direction => "SUB",
lpm_hint => "ONE_INPUT_IS_CONSTANT=NO,CIN_USED=NO",
lpm_representation => "SIGNED",
lpm_type => "LPM_ADD_SUB",
lpm_width => 32
)
PORT MAP (
dataa => dataa,
datab => datab,
result => sub_wire0
);
END SYN;
-- ============================================================
-- CNX file retrieval info
-- ============================================================
-- Retrieval info: PRIVATE: CarryIn NUMERIC "0"
-- Retrieval info: PRIVATE: CarryOut NUMERIC "0"
-- Retrieval info: PRIVATE: ConstantA NUMERIC "0"
-- Retrieval info: PRIVATE: ConstantB NUMERIC "0"
-- Retrieval info: PRIVATE: Function NUMERIC "1"
-- Retrieval info: PRIVATE: INTENDED_DEVICE_FAMILY STRING "Cyclone II"
-- Retrieval info: PRIVATE: LPM_PIPELINE NUMERIC "0"
-- Retrieval info: PRIVATE: Latency NUMERIC "0"
-- Retrieval info: PRIVATE: Overflow NUMERIC "0"
-- Retrieval info: PRIVATE: RadixA NUMERIC "10"
-- Retrieval info: PRIVATE: RadixB NUMERIC "10"
-- Retrieval info: PRIVATE: Representation NUMERIC "0"
-- Retrieval info: PRIVATE: SYNTH_WRAPPER_GEN_POSTFIX STRING "0"
-- Retrieval info: PRIVATE: ValidCtA NUMERIC "0"
-- Retrieval info: PRIVATE: ValidCtB NUMERIC "0"
-- Retrieval info: PRIVATE: WhichConstant NUMERIC "0"
-- Retrieval info: PRIVATE: aclr NUMERIC "0"
-- Retrieval info: PRIVATE: clken NUMERIC "0"
-- Retrieval info: PRIVATE: nBit NUMERIC "32"
-- Retrieval info: CONSTANT: LPM_DIRECTION STRING "SUB"
-- Retrieval info: CONSTANT: LPM_HINT STRING "ONE_INPUT_IS_CONSTANT=NO,CIN_USED=NO"
-- Retrieval info: CONSTANT: LPM_REPRESENTATION STRING "SIGNED"
-- Retrieval info: CONSTANT: LPM_TYPE STRING "LPM_ADD_SUB"
-- Retrieval info: CONSTANT: LPM_WIDTH NUMERIC "32"
-- Retrieval info: USED_PORT: dataa 0 0 32 0 INPUT NODEFVAL dataa[31..0]
-- Retrieval info: USED_PORT: datab 0 0 32 0 INPUT NODEFVAL datab[31..0]
-- Retrieval info: USED_PORT: result 0 0 32 0 OUTPUT NODEFVAL result[31..0]
-- Retrieval info: CONNECT: result 0 0 32 0 @result 0 0 32 0
-- Retrieval info: CONNECT: @dataa 0 0 32 0 dataa 0 0 32 0
-- Retrieval info: CONNECT: @datab 0 0 32 0 datab 0 0 32 0
-- Retrieval info: LIBRARY: lpm lpm.lpm_components.all
-- Retrieval info: GEN_FILE: TYPE_NORMAL lpm_add_sub_oe0.vhd TRUE
-- Retrieval info: GEN_FILE: TYPE_NORMAL lpm_add_sub_oe0.inc FALSE
-- Retrieval info: GEN_FILE: TYPE_NORMAL lpm_add_sub_oe0.cmp TRUE
-- Retrieval info: GEN_FILE: TYPE_NORMAL lpm_add_sub_oe0.bsf TRUE FALSE
-- Retrieval info: GEN_FILE: TYPE_NORMAL lpm_add_sub_oe0_inst.vhd FALSE
-- Retrieval info: GEN_FILE: TYPE_NORMAL lpm_add_sub_oe0_waveforms.html FALSE
-- Retrieval info: GEN_FILE: TYPE_NORMAL lpm_add_sub_oe0_wave*.jpg FALSE
-- Retrieval info: LIB_FILE: lpm
|
-- $Id: sys_conf.vhd 442 2011-12-23 10:03:28Z mueller $
--
-- Copyright 2011- by Walter F.J. Mueller <[email protected]>
--
-- This program is free software; you may redistribute and/or modify it under
-- the terms of the GNU General Public License as published by the Free
-- Software Foundation, either version 2, or at your option any later version.
--
-- This program is distributed in the hope that it will be useful, but
-- WITHOUT ANY WARRANTY, without even the implied warranty of MERCHANTABILITY
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-- for complete details.
--
------------------------------------------------------------------------------
-- Package Name: sys_conf
-- Description: Definitions for sys_tst_rlink_s3 (for synthesis)
--
-- Dependencies: -
-- Tool versions: xst 13.1; ghdl 0.29
-- Revision History:
-- Date Rev Version Comment
-- 2011-12-22 442 1.0 Initial version
------------------------------------------------------------------------------
library ieee;
use ieee.std_logic_1164.all;
use work.slvtypes.all;
package sys_conf is
constant sys_conf_ser2rri_defbaud : integer := 115200; -- default 115k baud
constant sys_conf_hio_debounce : boolean := true; -- instantiate debouncers
-- derived constants
constant sys_conf_clksys : integer := 50000000;
constant sys_conf_clksys_mhz : integer := sys_conf_clksys/1000000;
constant sys_conf_ser2rri_cdinit : integer :=
(sys_conf_clksys/sys_conf_ser2rri_defbaud)-1;
end package sys_conf;
|
-- $Id: sys_conf.vhd 442 2011-12-23 10:03:28Z mueller $
--
-- Copyright 2011- by Walter F.J. Mueller <[email protected]>
--
-- This program is free software; you may redistribute and/or modify it under
-- the terms of the GNU General Public License as published by the Free
-- Software Foundation, either version 2, or at your option any later version.
--
-- This program is distributed in the hope that it will be useful, but
-- WITHOUT ANY WARRANTY, without even the implied warranty of MERCHANTABILITY
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-- for complete details.
--
------------------------------------------------------------------------------
-- Package Name: sys_conf
-- Description: Definitions for sys_tst_rlink_s3 (for synthesis)
--
-- Dependencies: -
-- Tool versions: xst 13.1; ghdl 0.29
-- Revision History:
-- Date Rev Version Comment
-- 2011-12-22 442 1.0 Initial version
------------------------------------------------------------------------------
library ieee;
use ieee.std_logic_1164.all;
use work.slvtypes.all;
package sys_conf is
constant sys_conf_ser2rri_defbaud : integer := 115200; -- default 115k baud
constant sys_conf_hio_debounce : boolean := true; -- instantiate debouncers
-- derived constants
constant sys_conf_clksys : integer := 50000000;
constant sys_conf_clksys_mhz : integer := sys_conf_clksys/1000000;
constant sys_conf_ser2rri_cdinit : integer :=
(sys_conf_clksys/sys_conf_ser2rri_defbaud)-1;
end package sys_conf;
|
-------------------------------------------------------------------------------
--! @file axi_powerlink.vhd
--
--! @brief
--
-------------------------------------------------------------------------------
--
-- (c) B&R, 2012
--
-- Redistribution and use in source and binary forms, with or without
-- modification, are permitted provided that the following conditions
-- are met:
--
-- 1. Redistributions of source code must retain the above copyright
-- notice, this list of conditions and the following disclaimer.
--
-- 2. Redistributions in binary form must reproduce the above copyright
-- notice, this list of conditions and the following disclaimer in the
-- documentation and/or other materials provided with the distribution.
--
-- 3. Neither the name of B&R nor the names of its
-- contributors may be used to endorse or promote products derived
-- from this software without prior written permission. For written
-- permission, please contact [email protected]
--
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-- "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
-- FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-- COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-- INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-- BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-- LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-- CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-- LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
-- ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-- POSSIBILITY OF SUCH DAMAGE.
--
-------------------------------------------------------------------------------
--
-- This is the toplevel file for using the POWERLINK IP-Core
-- with Xilinx AXI.
--
-------------------------------------------------------------------------------
library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_arith.all;
use ieee.std_logic_unsigned.all;
use ieee.math_real.log2;
use ieee.math_real.ceil;
use work.global.all;
library proc_common_v3_00_a;
use proc_common_v3_00_a.proc_common_pkg.all;
use proc_common_v3_00_a.ipif_pkg.all;
library axi_lite_ipif_v1_01_a;
use axi_lite_ipif_v1_01_a.axi_lite_ipif;
library axi_master_burst_v1_00_a;
use axi_master_burst_v1_00_a.axi_master_burst;
-- standard libraries declarations
library UNISIM;
use UNISIM.vcomponents.all;
-- pragma synthesis_off
library IEEE;
use IEEE.vital_timing.all;
-- pragma synthesis_on
-- other libraries declarations
library AXI_LITE_IPIF_V1_01_A;
library AXI_MASTER_BURST_V1_00_A;
entity axi_powerlink is
generic(
C_FAMILY : string := "spartan6";
-- general
C_GEN_PDI : boolean := false;
C_GEN_PAR_IF : boolean := false;
C_GEN_SPI_IF : boolean := false;
C_GEN_AXI_BUS_IF : boolean := false;
C_GEN_SIMPLE_IO : boolean := false;
-- openMAC
C_MAC_PKT_SIZE : integer := 1024;
C_MAC_PKT_SIZE_LOG2 : integer := 10;
C_MAC_RX_BUFFERS : integer := 16;
C_USE_RMII : boolean := false;
C_TX_INT_PKT : boolean := false;
C_RX_INT_PKT : boolean := false;
C_USE_2ND_PHY : boolean := true;
C_NUM_SMI : integer range 1 to 2 := 2;
C_MAC_GEN_SECOND_TIMER : boolean := false;
--pdi
C_PDI_REV : integer := 0;
C_PCP_SYS_ID : integer := 0;
C_PDI_GEN_ASYNC_BUF_0 : boolean := true;
C_PDI_ASYNC_BUF_0 : integer := 50;
C_PDI_GEN_ASYNC_BUF_1 : boolean := true;
C_PDI_ASYNC_BUF_1 : integer := 50;
C_PDI_GEN_LED : boolean := false;
C_PDI_GEN_TIME_SYNC : boolean := true;
C_PDI_GEN_EVENT : boolean := true;
--global pdi and mac
C_NUM_RPDO : integer := 3;
C_RPDO_0_BUF_SIZE : integer := 100;
C_RPDO_1_BUF_SIZE : integer := 100;
C_RPDO_2_BUF_SIZE : integer := 100;
C_NUM_TPDO : integer := 1;
C_TPDO_BUF_SIZE : integer := 100;
-- pap
C_PAP_DATA_WIDTH : integer := 16;
--C_PAP_BIG_END : boolean := false;
C_PAP_LOW_ACT : boolean := false;
-- spi
C_SPI_CPOL : boolean := false;
C_SPI_CPHA : boolean := false;
--C_SPI_BIG_END : boolean := false;
-- simpleIO
C_PIO_VAL_LENGTH : integer := 50;
-- debug
C_OBSERVER_ENABLE : boolean := false;
-- clock stabiliser
C_INSTANCE_ODDR2 : boolean := false;
-- sync IRQ pulse width
C_USE_PULSE_2nd_CMP_TIMER : boolean := true;
C_PULSE_WIDTH_2nd_CMP_TIMER : integer := 9;
-- PDI AP AXI Slave
C_S_AXI_PDI_AP_BASEADDR : std_logic_vector := X"00000000";
C_S_AXI_PDI_AP_HIGHADDR : std_logic_vector := X"000FFFFF";
C_S_AXI_PDI_AP_DATA_WIDTH : integer := 32;
C_S_AXI_PDI_AP_ADDR_WIDTH : integer := 32;
C_S_AXI_PDI_AP_USE_WSTRB : integer := 1;
C_S_AXI_PDI_AP_DPHASE_TIMEOUT : integer := 8;
-- PDI AP AXI Slave
C_S_AXI_SMP_PCP_BASEADDR : std_logic_vector := X"00000000";
C_S_AXI_SMP_PCP_HIGHADDR : std_logic_vector := X"000FFFFF";
C_S_AXI_SMP_PCP_DATA_WIDTH : integer := 32;
C_S_AXI_SMP_PCP_ADDR_WIDTH : integer := 32;
C_S_AXI_SMP_PCP_USE_WSTRB : integer := 1;
C_S_AXI_SMP_PCP_DPHASE_TIMEOUT : integer := 8;
-- PDI PCP AXI Slave
C_S_AXI_PDI_PCP_BASEADDR : std_logic_vector := X"00000000";
C_S_AXI_PDI_PCP_HIGHADDR : std_logic_vector := X"000FFFFF";
C_S_AXI_PDI_PCP_DATA_WIDTH : integer := 32;
C_S_AXI_PDI_PCP_ADDR_WIDTH : integer := 32;
C_S_AXI_PDI_PCP_USE_WSTRB : integer := 1;
C_S_AXI_PDI_PCP_DPHASE_TIMEOUT : integer := 8;
-- openMAC DMA AXI Master
C_M_AXI_MAC_DMA_ADDR_WIDTH : INTEGER := 32;
C_M_AXI_MAC_DMA_DATA_WIDTH : INTEGER := 32;
C_M_AXI_MAC_DMA_NATIVE_DWIDTH : INTEGER := 32;
C_M_AXI_MAC_DMA_LENGTH_WIDTH : INTEGER := 12;
C_M_AXI_MAC_DMA_MAX_BURST_LEN : INTEGER := 16;
C_MAC_DMA_BURST_SIZE_RX : INTEGER := 8; --in bytes
C_MAC_DMA_BURST_SIZE_TX : INTEGER := 8; --in bytes
C_MAC_DMA_FIFO_SIZE_RX : INTEGER := 32; --in bytes
C_MAC_DMA_FIFO_SIZE_TX : INTEGER := 32; --in bytes
-- openMAC PKT AXI Slave
C_S_AXI_MAC_PKT_BASEADDR : std_logic_vector := X"00000000";
C_S_AXI_MAC_PKT_HIGHADDR : std_logic_vector := X"000FFFFF";
C_S_AXI_MAC_PKT_DATA_WIDTH : integer := 32;
C_S_AXI_MAC_PKT_ADDR_WIDTH : integer := 32;
C_S_AXI_MAC_PKT_USE_WSTRB : integer := 1;
C_S_AXI_MAC_PKT_DPHASE_TIMEOUT : integer := 8;
-- openMAC REG AXI Slave
--- MAC_REG
C_S_AXI_MAC_REG_RNG0_BASEADDR : std_logic_vector := X"00000000";
C_S_AXI_MAC_REG_RNG0_HIGHADDR : std_logic_vector := X"0000FFFF";
--- MAC_CMP
C_S_AXI_MAC_REG_RNG1_BASEADDR : std_logic_vector := X"00000000";
C_S_AXI_MAC_REG_RNG1_HIGHADDR : std_logic_vector := X"0000FFFF";
C_S_AXI_MAC_REG_DATA_WIDTH : integer := 32;
C_S_AXI_MAC_REG_ADDR_WIDTH : integer := 32;
C_S_AXI_MAC_REG_USE_WSTRB : integer := 1;
C_S_AXI_MAC_REG_DPHASE_TIMEOUT : integer := 8;
C_S_AXI_MAC_REG_ACLK_FREQ_HZ : integer := 20 --clock frequency in Hz
);
port(
M_AXI_MAC_DMA_aclk : in std_logic;
M_AXI_MAC_DMA_aresetn : in std_logic;
M_AXI_MAC_DMA_arready : in std_logic;
M_AXI_MAC_DMA_awready : in std_logic;
M_AXI_MAC_DMA_bvalid : in std_logic;
M_AXI_MAC_DMA_rlast : in std_logic;
M_AXI_MAC_DMA_rvalid : in std_logic;
M_AXI_MAC_DMA_wready : in std_logic;
S_AXI_MAC_PKT_ACLK : in std_logic;
S_AXI_MAC_PKT_ARESETN : in std_logic;
S_AXI_MAC_PKT_ARVALID : in std_logic;
S_AXI_MAC_PKT_AWVALID : in std_logic;
S_AXI_MAC_PKT_BREADY : in std_logic;
S_AXI_MAC_PKT_RREADY : in std_logic;
S_AXI_MAC_PKT_WVALID : in std_logic;
S_AXI_MAC_REG_ACLK : in std_logic;
S_AXI_MAC_REG_ARESETN : in std_logic;
S_AXI_MAC_REG_ARVALID : in std_logic;
S_AXI_MAC_REG_AWVALID : in std_logic;
S_AXI_MAC_REG_BREADY : in std_logic;
S_AXI_MAC_REG_RREADY : in std_logic;
S_AXI_MAC_REG_WVALID : in std_logic;
S_AXI_PDI_AP_ACLK : in std_logic;
S_AXI_PDI_AP_ARESETN : in std_logic;
S_AXI_PDI_AP_ARVALID : in std_logic;
S_AXI_PDI_AP_AWVALID : in std_logic;
S_AXI_PDI_AP_BREADY : in std_logic;
S_AXI_PDI_AP_RREADY : in std_logic;
S_AXI_PDI_AP_WVALID : in std_logic;
S_AXI_PDI_PCP_ACLK : in std_logic;
S_AXI_PDI_PCP_ARESETN : in std_logic;
S_AXI_PDI_PCP_ARVALID : in std_logic;
S_AXI_PDI_PCP_AWVALID : in std_logic;
S_AXI_PDI_PCP_BREADY : in std_logic;
S_AXI_PDI_PCP_RREADY : in std_logic;
S_AXI_PDI_PCP_WVALID : in std_logic;
S_AXI_SMP_PCP_ACLK : in std_logic;
S_AXI_SMP_PCP_ARESETN : in std_logic;
S_AXI_SMP_PCP_ARVALID : in std_logic;
S_AXI_SMP_PCP_AWVALID : in std_logic;
S_AXI_SMP_PCP_BREADY : in std_logic;
S_AXI_SMP_PCP_RREADY : in std_logic;
S_AXI_SMP_PCP_WVALID : in std_logic;
clk100 : in std_logic;
clk50 : in std_logic;
pap_cs : in std_logic;
pap_cs_n : in std_logic;
pap_rd : in std_logic;
pap_rd_n : in std_logic;
pap_wr : in std_logic;
pap_wr_n : in std_logic;
phy0_RxDv : in std_logic;
phy0_RxErr : in std_logic;
phy0_SMIDat_I : in std_logic;
phy0_link : in std_logic;
phy1_RxDv : in std_logic;
phy1_RxErr : in std_logic;
phy1_SMIDat_I : in std_logic;
phy1_link : in std_logic;
phyMii0_RxClk : in std_logic;
phyMii0_RxDv : in std_logic;
phyMii0_RxEr : in std_logic;
phyMii0_TxClk : in std_logic;
phyMii1_RxClk : in std_logic;
phyMii1_RxDv : in std_logic;
phyMii1_RxEr : in std_logic;
phyMii1_TxClk : in std_logic;
phy_SMIDat_I : in std_logic;
spi_clk : in std_logic;
spi_mosi : in std_logic;
spi_sel_n : in std_logic;
M_AXI_MAC_DMA_bresp : in std_logic_vector(1 downto 0);
M_AXI_MAC_DMA_rdata : in std_logic_vector(C_M_AXI_MAC_DMA_DATA_WIDTH-1 downto 0);
M_AXI_MAC_DMA_rresp : in std_logic_vector(1 downto 0);
S_AXI_MAC_PKT_ARADDR : in std_logic_vector(C_S_AXI_MAC_PKT_ADDR_WIDTH-1 downto 0);
S_AXI_MAC_PKT_AWADDR : in std_logic_vector(C_S_AXI_MAC_PKT_ADDR_WIDTH-1 downto 0);
S_AXI_MAC_PKT_WDATA : in std_logic_vector(C_S_AXI_MAC_PKT_DATA_WIDTH-1 downto 0);
S_AXI_MAC_PKT_WSTRB : in std_logic_vector((C_S_AXI_MAC_PKT_DATA_WIDTH/8)-1 downto 0);
S_AXI_MAC_REG_ARADDR : in std_logic_vector(C_S_AXI_MAC_REG_ADDR_WIDTH-1 downto 0);
S_AXI_MAC_REG_AWADDR : in std_logic_vector(C_S_AXI_MAC_REG_ADDR_WIDTH-1 downto 0);
S_AXI_MAC_REG_WDATA : in std_logic_vector(C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0);
S_AXI_MAC_REG_WSTRB : in std_logic_vector((C_S_AXI_MAC_REG_DATA_WIDTH/8)-1 downto 0);
S_AXI_PDI_AP_ARADDR : in std_logic_vector(C_S_AXI_PDI_AP_ADDR_WIDTH-1 downto 0);
S_AXI_PDI_AP_AWADDR : in std_logic_vector(C_S_AXI_PDI_AP_ADDR_WIDTH-1 downto 0);
S_AXI_PDI_AP_WDATA : in std_logic_vector(C_S_AXI_PDI_AP_DATA_WIDTH-1 downto 0);
S_AXI_PDI_AP_WSTRB : in std_logic_vector((C_S_AXI_PDI_AP_DATA_WIDTH/8)-1 downto 0);
S_AXI_PDI_PCP_ARADDR : in std_logic_vector(C_S_AXI_PDI_PCP_ADDR_WIDTH-1 downto 0);
S_AXI_PDI_PCP_AWADDR : in std_logic_vector(C_S_AXI_PDI_PCP_ADDR_WIDTH-1 downto 0);
S_AXI_PDI_PCP_WDATA : in std_logic_vector(C_S_AXI_PDI_PCP_DATA_WIDTH-1 downto 0);
S_AXI_PDI_PCP_WSTRB : in std_logic_vector((C_S_AXI_PDI_PCP_DATA_WIDTH/8)-1 downto 0);
S_AXI_SMP_PCP_ARADDR : in std_logic_vector(C_S_AXI_SMP_PCP_ADDR_WIDTH-1 downto 0);
S_AXI_SMP_PCP_AWADDR : in std_logic_vector(C_S_AXI_SMP_PCP_ADDR_WIDTH-1 downto 0);
S_AXI_SMP_PCP_WDATA : in std_logic_vector(C_S_AXI_SMP_PCP_DATA_WIDTH-1 downto 0);
S_AXI_SMP_PCP_WSTRB : in std_logic_vector((C_S_AXI_SMP_PCP_DATA_WIDTH/8)-1 downto 0);
pap_addr : in std_logic_vector(15 downto 0);
pap_be : in std_logic_vector(C_PAP_DATA_WIDTH/8-1 downto 0);
pap_be_n : in std_logic_vector(C_PAP_DATA_WIDTH/8-1 downto 0);
pap_data_I : in std_logic_vector(C_PAP_DATA_WIDTH-1 downto 0);
pap_gpio_I : in std_logic_vector(1 downto 0);
phy0_RxDat : in std_logic_vector(1 downto 0);
phy1_RxDat : in std_logic_vector(1 downto 0);
phyMii0_RxDat : in std_logic_vector(3 downto 0);
phyMii1_RxDat : in std_logic_vector(3 downto 0);
pio_pconfig : in std_logic_vector(3 downto 0);
pio_portInLatch : in std_logic_vector(3 downto 0);
pio_portio_I : in std_logic_vector(31 downto 0);
M_AXI_MAC_DMA_arvalid : out std_logic;
M_AXI_MAC_DMA_awvalid : out std_logic;
M_AXI_MAC_DMA_bready : out std_logic;
M_AXI_MAC_DMA_md_error : out std_logic;
M_AXI_MAC_DMA_rready : out std_logic;
M_AXI_MAC_DMA_wlast : out std_logic;
M_AXI_MAC_DMA_wvalid : out std_logic;
S_AXI_MAC_PKT_ARREADY : out std_logic;
S_AXI_MAC_PKT_AWREADY : out std_logic;
S_AXI_MAC_PKT_BVALID : out std_logic;
S_AXI_MAC_PKT_RVALID : out std_logic;
S_AXI_MAC_PKT_WREADY : out std_logic;
S_AXI_MAC_REG_ARREADY : out std_logic;
S_AXI_MAC_REG_AWREADY : out std_logic;
S_AXI_MAC_REG_BVALID : out std_logic;
S_AXI_MAC_REG_RVALID : out std_logic;
S_AXI_MAC_REG_WREADY : out std_logic;
S_AXI_PDI_AP_ARREADY : out std_logic;
S_AXI_PDI_AP_AWREADY : out std_logic;
S_AXI_PDI_AP_BVALID : out std_logic;
S_AXI_PDI_AP_RVALID : out std_logic;
S_AXI_PDI_AP_WREADY : out std_logic;
S_AXI_PDI_PCP_ARREADY : out std_logic;
S_AXI_PDI_PCP_AWREADY : out std_logic;
S_AXI_PDI_PCP_BVALID : out std_logic;
S_AXI_PDI_PCP_RVALID : out std_logic;
S_AXI_PDI_PCP_WREADY : out std_logic;
S_AXI_SMP_PCP_ARREADY : out std_logic;
S_AXI_SMP_PCP_AWREADY : out std_logic;
S_AXI_SMP_PCP_BVALID : out std_logic;
S_AXI_SMP_PCP_RVALID : out std_logic;
S_AXI_SMP_PCP_WREADY : out std_logic;
ap_asyncIrq : out std_logic;
ap_asyncIrq_n : out std_logic;
ap_syncIrq : out std_logic;
ap_syncIrq_n : out std_logic;
led_error : out std_logic;
led_status : out std_logic;
mac_irq : out std_logic;
pap_ack : out std_logic;
pap_ack_n : out std_logic;
pap_data_T : out std_logic;
phy0_Rst_n : out std_logic;
phy0_SMIClk : out std_logic;
phy0_SMIDat_O : out std_logic;
phy0_SMIDat_T : out std_logic;
phy0_TxEn : out std_logic;
phy0_clk : out std_logic;
phy1_Rst_n : out std_logic;
phy1_SMIClk : out std_logic;
phy1_SMIDat_O : out std_logic;
phy1_SMIDat_T : out std_logic;
phy1_TxEn : out std_logic;
phy1_clk : out std_logic;
phyMii0_TxEn : out std_logic;
phyMii0_TxEr : out std_logic;
phyMii1_TxEn : out std_logic;
phyMii1_TxEr : out std_logic;
phy_Rst_n : out std_logic;
phy_SMIClk : out std_logic;
phy_SMIDat_O : out std_logic;
phy_SMIDat_T : out std_logic;
pio_operational : out std_logic;
spi_miso : out std_logic;
tcp_irq : out std_logic;
M_AXI_MAC_DMA_araddr : out std_logic_vector(C_M_AXI_MAC_DMA_ADDR_WIDTH-1 downto 0);
M_AXI_MAC_DMA_arburst : out std_logic_vector(1 downto 0);
M_AXI_MAC_DMA_arcache : out std_logic_vector(3 downto 0);
M_AXI_MAC_DMA_arlen : out std_logic_vector(7 downto 0);
M_AXI_MAC_DMA_arprot : out std_logic_vector(2 downto 0);
M_AXI_MAC_DMA_arsize : out std_logic_vector(2 downto 0);
M_AXI_MAC_DMA_awaddr : out std_logic_vector(C_M_AXI_MAC_DMA_ADDR_WIDTH-1 downto 0);
M_AXI_MAC_DMA_awburst : out std_logic_vector(1 downto 0);
M_AXI_MAC_DMA_awcache : out std_logic_vector(3 downto 0);
M_AXI_MAC_DMA_awlen : out std_logic_vector(7 downto 0);
M_AXI_MAC_DMA_awprot : out std_logic_vector(2 downto 0);
M_AXI_MAC_DMA_awsize : out std_logic_vector(2 downto 0);
M_AXI_MAC_DMA_wdata : out std_logic_vector(C_M_AXI_MAC_DMA_DATA_WIDTH-1 downto 0);
M_AXI_MAC_DMA_wstrb : out std_logic_vector((C_M_AXI_MAC_DMA_DATA_WIDTH/8)-1 downto 0);
S_AXI_MAC_PKT_BRESP : out std_logic_vector(1 downto 0);
S_AXI_MAC_PKT_RDATA : out std_logic_vector(C_S_AXI_MAC_PKT_DATA_WIDTH-1 downto 0);
S_AXI_MAC_PKT_RRESP : out std_logic_vector(1 downto 0);
S_AXI_MAC_REG_BRESP : out std_logic_vector(1 downto 0);
S_AXI_MAC_REG_RDATA : out std_logic_vector(C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0);
S_AXI_MAC_REG_RRESP : out std_logic_vector(1 downto 0);
S_AXI_PDI_AP_BRESP : out std_logic_vector(1 downto 0);
S_AXI_PDI_AP_RDATA : out std_logic_vector(C_S_AXI_PDI_AP_DATA_WIDTH-1 downto 0);
S_AXI_PDI_AP_RRESP : out std_logic_vector(1 downto 0);
S_AXI_PDI_PCP_BRESP : out std_logic_vector(1 downto 0);
S_AXI_PDI_PCP_RDATA : out std_logic_vector(C_S_AXI_PDI_PCP_DATA_WIDTH-1 downto 0);
S_AXI_PDI_PCP_RRESP : out std_logic_vector(1 downto 0);
S_AXI_SMP_PCP_BRESP : out std_logic_vector(1 downto 0);
S_AXI_SMP_PCP_RDATA : out std_logic_vector(C_S_AXI_SMP_PCP_DATA_WIDTH-1 downto 0);
S_AXI_SMP_PCP_RRESP : out std_logic_vector(1 downto 0);
led_gpo : out std_logic_vector(7 downto 0);
led_opt : out std_logic_vector(1 downto 0);
led_phyAct : out std_logic_vector(1 downto 0);
led_phyLink : out std_logic_vector(1 downto 0);
pap_data_O : out std_logic_vector(C_PAP_DATA_WIDTH-1 downto 0);
pap_gpio_O : out std_logic_vector(1 downto 0);
pap_gpio_T : out std_logic_vector(1 downto 0);
phy0_TxDat : out std_logic_vector(1 downto 0);
phy1_TxDat : out std_logic_vector(1 downto 0);
phyMii0_TxDat : out std_logic_vector(3 downto 0);
phyMii1_TxDat : out std_logic_vector(3 downto 0);
pio_portOutValid : out std_logic_vector(3 downto 0);
pio_portio_O : out std_logic_vector(31 downto 0);
pio_portio_T : out std_logic_vector(31 downto 0);
test_port : out std_logic_vector(255 downto 0) := (others => '0')
);
-- Entity declarations --
-- Click here to add additional declarations --
attribute SIGIS : string;
-- Entity attributes --
attribute SIGIS of M_AXI_MAC_DMA_aclk : signal is "Clk";
attribute SIGIS of M_AXI_MAC_DMA_aresetn : signal is "Rst";
attribute SIGIS of S_AXI_MAC_PKT_ACLK : signal is "Clk";
attribute SIGIS of S_AXI_MAC_PKT_ARESETN : signal is "Rst";
attribute SIGIS of S_AXI_MAC_REG_ACLK : signal is "Clk";
attribute SIGIS of S_AXI_MAC_REG_ARESETN : signal is "Rst";
attribute SIGIS of S_AXI_PDI_AP_ACLK : signal is "Clk";
attribute SIGIS of S_AXI_PDI_AP_ARESETN : signal is "Rst";
attribute SIGIS of S_AXI_PDI_PCP_ACLK : signal is "Clk";
attribute SIGIS of S_AXI_PDI_PCP_ARESETN : signal is "Rst";
attribute SIGIS of S_AXI_SMP_PCP_ACLK : signal is "Clk";
attribute SIGIS of S_AXI_SMP_PCP_ARESETN : signal is "Rst";
attribute SIGIS of clk100 : signal is "Clk";
attribute SIGIS of phy0_clk : signal is "Clk";
attribute SIGIS of phy1_clk : signal is "Clk";
end axi_powerlink;
architecture struct of axi_powerlink is
---- Architecture declarations -----
function get_max( a, b : integer) return integer is
begin
if a < b then
return b;
else
return a;
end if;
end get_max;
---- Component declarations -----
component clkXing
generic(
gCsNum : natural := 2;
gDataWidth : natural := 32
);
port (
iArst : in std_logic;
iFastClk : in std_logic;
iFastCs : in std_logic_vector(gCsNum-1 downto 0);
iFastRNW : in std_logic;
iSlowClk : in std_logic;
iSlowRdAck : in std_logic;
iSlowReaddata : in std_logic_vector(gDataWidth-1 downto 0);
iSlowWrAck : in std_logic;
oFastRdAck : out std_logic;
oFastReaddata : out std_logic_vector(gDataWidth-1 downto 0);
oFastWrAck : out std_logic;
oSlowCs : out std_logic_vector(gCsNum-1 downto 0);
oSlowRNW : out std_logic
);
end component;
component ipif_master_handler
generic(
C_MAC_DMA_IPIF_AWIDTH : integer := 32;
C_MAC_DMA_IPIF_NATIVE_DWIDTH : integer := 32;
dma_highadr_g : integer := 31;
gen_rx_fifo_g : boolean := true;
gen_tx_fifo_g : boolean := true;
m_burstcount_width_g : integer := 4
);
port (
Bus2MAC_DMA_MstRd_d : in std_logic_vector(C_MAC_DMA_IPIF_NATIVE_DWIDTH-1 downto 0);
Bus2MAC_DMA_MstRd_eof_n : in std_logic := '1';
Bus2MAC_DMA_MstRd_rem : in std_logic_vector(C_MAC_DMA_IPIF_NATIVE_DWIDTH/8-1 downto 0);
Bus2MAC_DMA_MstRd_sof_n : in std_logic := '1';
Bus2MAC_DMA_MstRd_src_dsc_n : in std_logic := '1';
Bus2MAC_DMA_MstRd_src_rdy_n : in std_logic := '1';
Bus2MAC_DMA_MstWr_dst_dsc_n : in std_logic := '1';
Bus2MAC_DMA_MstWr_dst_rdy_n : in std_logic := '1';
Bus2MAC_DMA_Mst_CmdAck : in std_logic := '0';
Bus2MAC_DMA_Mst_Cmd_Timeout : in std_logic := '0';
Bus2MAC_DMA_Mst_Cmplt : in std_logic := '0';
Bus2MAC_DMA_Mst_Error : in std_logic := '0';
Bus2MAC_DMA_Mst_Rearbitrate : in std_logic := '0';
MAC_DMA_CLK : in std_logic;
MAC_DMA_Rst : in std_logic;
m_address : in std_logic_vector(dma_highadr_g downto 0);
m_burstcount : in std_logic_vector(m_burstcount_width_g-1 downto 0);
m_burstcounter : in std_logic_vector(m_burstcount_width_g-1 downto 0);
m_byteenable : in std_logic_vector(3 downto 0);
m_read : in std_logic := '0';
m_write : in std_logic := '0';
m_writedata : in std_logic_vector(31 downto 0);
MAC_DMA2Bus_MstRd_Req : out std_logic := '0';
MAC_DMA2Bus_MstRd_dst_dsc_n : out std_logic := '1';
MAC_DMA2Bus_MstRd_dst_rdy_n : out std_logic := '1';
MAC_DMA2Bus_MstWr_Req : out std_logic := '0';
MAC_DMA2Bus_MstWr_d : out std_logic_vector(C_MAC_DMA_IPIF_NATIVE_DWIDTH-1 downto 0);
MAC_DMA2Bus_MstWr_eof_n : out std_logic := '1';
MAC_DMA2Bus_MstWr_rem : out std_logic_vector(C_MAC_DMA_IPIF_NATIVE_DWIDTH/8-1 downto 0);
MAC_DMA2Bus_MstWr_sof_n : out std_logic := '1';
MAC_DMA2Bus_MstWr_src_dsc_n : out std_logic := '1';
MAC_DMA2Bus_MstWr_src_rdy_n : out std_logic := '1';
MAC_DMA2Bus_Mst_Addr : out std_logic_vector(C_MAC_DMA_IPIF_AWIDTH-1 downto 0);
MAC_DMA2Bus_Mst_BE : out std_logic_vector(C_MAC_DMA_IPIF_NATIVE_DWIDTH/8-1 downto 0);
MAC_DMA2Bus_Mst_Length : out std_logic_vector(11 downto 0);
MAC_DMA2Bus_Mst_Lock : out std_logic := '0';
MAC_DMA2Bus_Mst_Reset : out std_logic := '0';
MAC_DMA2Bus_Mst_Type : out std_logic := '0';
m_clk : out std_logic;
m_readdata : out std_logic_vector(31 downto 0);
m_readdatavalid : out std_logic := '0';
m_waitrequest : out std_logic := '1'
);
end component;
component openMAC_16to32conv
generic(
bus_address_width : integer := 10;
gEndian : string := "little"
);
port (
bus_address : in std_logic_vector(bus_address_width-1 downto 0);
bus_byteenable : in std_logic_vector(3 downto 0);
bus_read : in std_logic;
bus_select : in std_logic;
bus_write : in std_logic;
bus_writedata : in std_logic_vector(31 downto 0);
clk : in std_logic;
rst : in std_logic;
s_readdata : in std_logic_vector(15 downto 0);
s_waitrequest : in std_logic;
bus_ack_rd : out std_logic;
bus_ack_wr : out std_logic;
bus_readdata : out std_logic_vector(31 downto 0);
s_address : out std_logic_vector(bus_address_width-1 downto 0);
s_byteenable : out std_logic_vector(1 downto 0);
s_chipselect : out std_logic;
s_read : out std_logic;
s_write : out std_logic;
s_writedata : out std_logic_vector(15 downto 0)
);
end component;
component powerlink
generic(
Simulate : integer := 0;
endian_g : string := "little";
gNumSmi : integer range 1 to 2 := 2;
genABuf1_g : integer := 1;
genABuf2_g : integer := 1;
genEvent_g : integer := 0;
genInternalAp_g : integer := 1;
genIoBuf_g : integer := 1;
genLedGadget_g : integer := 0;
genOnePdiClkDomain_g : integer := 0;
genPdi_g : integer := 1;
genSimpleIO_g : integer := 0;
genSmiIO : integer := 1;
genSpiAp_g : integer := 0;
genTimeSync_g : integer := 0;
gen_dma_observer_g : integer := 1;
iAsyBuf1Size_g : integer := 100;
iAsyBuf2Size_g : integer := 100;
iBufSizeLOG2_g : integer := 10;
iBufSize_g : integer := 1024;
iPdiRev_g : integer := 21930;
iRpdo0BufSize_g : integer := 100;
iRpdo1BufSize_g : integer := 100;
iRpdo2BufSize_g : integer := 100;
iRpdos_g : integer := 3;
iTpdoBufSize_g : integer := 100;
iTpdos_g : integer := 1;
m_burstcount_const_g : integer := 1;
m_burstcount_width_g : integer := 4;
m_data_width_g : integer := 16;
m_rx_burst_size_g : integer := 16;
m_rx_fifo_size_g : integer := 16;
m_tx_burst_size_g : integer := 16;
m_tx_fifo_size_g : integer := 16;
papBigEnd_g : integer := 0;
papDataWidth_g : integer := 8;
papLowAct_g : integer := 0;
pcpSysId : integer := 1;
pioValLen_g : integer := 50;
spiBigEnd_g : integer := 0;
spiCPHA_g : integer := 0;
spiCPOL_g : integer := 0;
use2ndCmpTimer_g : integer := 1;
usePulse2ndCmpTimer_g : integer := 1;
pulseWidth2ndCmpTimer_g : integer := 9;
use2ndPhy_g : integer := 1;
useIntPacketBuf_g : integer := 1;
useRmii_g : integer := 1;
useRxIntPacketBuf_g : integer := 1
);
port (
ap_address : in std_logic_vector(12 downto 0);
ap_byteenable : in std_logic_vector(3 downto 0);
ap_chipselect : in std_logic;
ap_read : in std_logic;
ap_write : in std_logic;
ap_writedata : in std_logic_vector(31 downto 0);
clk50 : in std_logic;
clkAp : in std_logic;
clkEth : in std_logic;
clkPcp : in std_logic;
m_clk : in std_logic;
m_readdata : in std_logic_vector(m_data_width_g-1 downto 0) := (others => '0');
m_readdatavalid : in std_logic := '0';
m_waitrequest : in std_logic;
mac_address : in std_logic_vector(11 downto 0);
mac_byteenable : in std_logic_vector(1 downto 0);
mac_chipselect : in std_logic;
mac_read : in std_logic;
mac_write : in std_logic;
mac_writedata : in std_logic_vector(15 downto 0);
mbf_address : in std_logic_vector(ibufsizelog2_g-3 downto 0);
mbf_byteenable : in std_logic_vector(3 downto 0);
mbf_chipselect : in std_logic;
mbf_read : in std_logic;
mbf_write : in std_logic;
mbf_writedata : in std_logic_vector(31 downto 0);
pap_addr : in std_logic_vector(15 downto 0);
pap_be : in std_logic_vector(papDataWidth_g/8-1 downto 0);
pap_be_n : in std_logic_vector(papDataWidth_g/8-1 downto 0);
pap_cs : in std_logic;
pap_cs_n : in std_logic;
pap_data_I : in std_logic_vector(papDataWidth_g-1 downto 0) := (others => '0');
pap_gpio_I : in std_logic_vector(1 downto 0) := (others => '0');
pap_rd : in std_logic;
pap_rd_n : in std_logic;
pap_wr : in std_logic;
pap_wr_n : in std_logic;
pcp_address : in std_logic_vector(12 downto 0);
pcp_byteenable : in std_logic_vector(3 downto 0);
pcp_chipselect : in std_logic;
pcp_read : in std_logic;
pcp_write : in std_logic;
pcp_writedata : in std_logic_vector(31 downto 0);
phy0_RxDat : in std_logic_vector(1 downto 0);
phy0_RxDv : in std_logic;
phy0_RxErr : in std_logic;
phy0_SMIDat_I : in std_logic := '1';
phy0_link : in std_logic := '0';
phy1_RxDat : in std_logic_vector(1 downto 0) := (others => '0');
phy1_RxDv : in std_logic;
phy1_RxErr : in std_logic;
phy1_SMIDat_I : in std_logic := '1';
phy1_link : in std_logic := '0';
phyMii0_RxClk : in std_logic;
phyMii0_RxDat : in std_logic_vector(3 downto 0) := (others => '0');
phyMii0_RxDv : in std_logic;
phyMii0_RxEr : in std_logic;
phyMii0_TxClk : in std_logic;
phyMii1_RxClk : in std_logic;
phyMii1_RxDat : in std_logic_vector(3 downto 0) := (others => '0');
phyMii1_RxDv : in std_logic;
phyMii1_RxEr : in std_logic;
phyMii1_TxClk : in std_logic;
phy_SMIDat_I : in std_logic := '1';
pio_pconfig : in std_logic_vector(3 downto 0);
pio_portInLatch : in std_logic_vector(3 downto 0);
pio_portio_I : in std_logic_vector(31 downto 0) := (others => '0');
pkt_clk : in std_logic;
rst : in std_logic;
rstAp : in std_logic;
rstPcp : in std_logic;
smp_address : in std_logic;
smp_byteenable : in std_logic_vector(3 downto 0);
smp_read : in std_logic;
smp_write : in std_logic;
smp_writedata : in std_logic_vector(31 downto 0);
spi_clk : in std_logic;
spi_mosi : in std_logic;
spi_sel_n : in std_logic;
tcp_address : in std_logic_vector(1 downto 0);
tcp_byteenable : in std_logic_vector(3 downto 0);
tcp_chipselect : in std_logic;
tcp_read : in std_logic;
tcp_write : in std_logic;
tcp_writedata : in std_logic_vector(31 downto 0);
ap_asyncIrq : out std_logic := '0';
ap_asyncIrq_n : out std_logic := '1';
ap_irq : out std_logic := '0';
ap_irq_n : out std_logic := '1';
ap_readdata : out std_logic_vector(31 downto 0) := (others => '0');
ap_syncIrq : out std_logic := '0';
ap_syncIrq_n : out std_logic := '1';
ap_waitrequest : out std_logic;
led_error : out std_logic := '0';
led_gpo : out std_logic_vector(7 downto 0) := (others => '0');
led_opt : out std_logic_vector(1 downto 0) := (others => '0');
led_phyAct : out std_logic_vector(1 downto 0) := (others => '0');
led_phyLink : out std_logic_vector(1 downto 0) := (others => '0');
led_status : out std_logic := '0';
m_address : out std_logic_vector(31 downto 0) := (others => '0');
m_burstcount : out std_logic_vector(m_burstcount_width_g-1 downto 0);
m_burstcounter : out std_logic_vector(m_burstcount_width_g-1 downto 0);
m_byteenable : out std_logic_vector(m_data_width_g/8-1 downto 0) := (others => '0');
m_read : out std_logic := '0';
m_write : out std_logic := '0';
m_writedata : out std_logic_vector(m_data_width_g-1 downto 0) := (others => '0');
mac_irq : out std_logic := '0';
mac_readdata : out std_logic_vector(15 downto 0) := (others => '0');
mac_waitrequest : out std_logic;
mbf_readdata : out std_logic_vector(31 downto 0) := (others => '0');
mbf_waitrequest : out std_logic;
pap_ack : out std_logic := '0';
pap_ack_n : out std_logic := '1';
pap_data_O : out std_logic_vector(papDataWidth_g-1 downto 0);
pap_data_T : out std_logic;
pap_gpio_O : out std_logic_vector(1 downto 0);
pap_gpio_T : out std_logic_vector(1 downto 0);
pcp_readdata : out std_logic_vector(31 downto 0) := (others => '0');
pcp_waitrequest : out std_logic;
phy0_Rst_n : out std_logic := '1';
phy0_SMIClk : out std_logic := '0';
phy0_SMIDat_O : out std_logic;
phy0_SMIDat_T : out std_logic;
phy0_TxDat : out std_logic_vector(1 downto 0) := (others => '0');
phy0_TxEn : out std_logic := '0';
phy1_Rst_n : out std_logic := '1';
phy1_SMIClk : out std_logic := '0';
phy1_SMIDat_O : out std_logic;
phy1_SMIDat_T : out std_logic;
phy1_TxDat : out std_logic_vector(1 downto 0) := (others => '0');
phy1_TxEn : out std_logic := '0';
phyMii0_TxDat : out std_logic_vector(3 downto 0) := (others => '0');
phyMii0_TxEn : out std_logic := '0';
phyMii0_TxEr : out std_logic := '0';
phyMii1_TxDat : out std_logic_vector(3 downto 0) := (others => '0');
phyMii1_TxEn : out std_logic := '0';
phyMii1_TxEr : out std_logic := '0';
phy_Rst_n : out std_logic := '1';
phy_SMIClk : out std_logic := '0';
phy_SMIDat_O : out std_logic;
phy_SMIDat_T : out std_logic;
pio_operational : out std_logic := '0';
pio_portOutValid : out std_logic_vector(3 downto 0) := (others => '0');
pio_portio_O : out std_logic_vector(31 downto 0);
pio_portio_T : out std_logic_vector(31 downto 0);
smp_readdata : out std_logic_vector(31 downto 0) := (others => '0');
smp_waitrequest : out std_logic;
spi_miso : out std_logic := '0';
tcp_irq : out std_logic := '0';
tcp_readdata : out std_logic_vector(31 downto 0) := (others => '0');
tcp_waitrequest : out std_logic;
pap_data : inout std_logic_vector(papDataWidth_g-1 downto 0) := (others => '0');
pap_gpio : inout std_logic_vector(1 downto 0) := (others => '0');
phy0_SMIDat : inout std_logic := '1';
phy1_SMIDat : inout std_logic := '1';
phy_SMIDat : inout std_logic := '1';
pio_portio : inout std_logic_vector(31 downto 0) := (others => '0')
);
end component;
component axi_lite_ipif
generic(
C_ARD_ADDR_RANGE_ARRAY : slv64_array_type := (X"0000_0000_7000_0000",X"0000_0000_7000_00FF",X"0000_0000_7000_0100",X"0000_0000_7000_01FF");
C_ARD_NUM_CE_ARRAY : integer_array_type := (4,12);
C_DPHASE_TIMEOUT : integer range 0 to 512 := 8;
C_FAMILY : string := "virtex6";
C_S_AXI_ADDR_WIDTH : integer := 32;
C_S_AXI_DATA_WIDTH : integer range 32 to 32 := 32;
C_S_AXI_MIN_SIZE : std_logic_vector(31 downto 0) := X"000001FF";
C_USE_WSTRB : integer := 0
);
port (
IP2Bus_Data : in std_logic_vector(C_S_AXI_DATA_WIDTH-1 downto 0);
IP2Bus_Error : in std_logic;
IP2Bus_RdAck : in std_logic;
IP2Bus_WrAck : in std_logic;
S_AXI_ACLK : in std_logic;
S_AXI_ARADDR : in std_logic_vector(C_S_AXI_ADDR_WIDTH-1 downto 0);
S_AXI_ARESETN : in std_logic;
S_AXI_ARVALID : in std_logic;
S_AXI_AWADDR : in std_logic_vector(C_S_AXI_ADDR_WIDTH-1 downto 0);
S_AXI_AWVALID : in std_logic;
S_AXI_BREADY : in std_logic;
S_AXI_RREADY : in std_logic;
S_AXI_WDATA : in std_logic_vector(C_S_AXI_DATA_WIDTH-1 downto 0);
S_AXI_WSTRB : in std_logic_vector((C_S_AXI_DATA_WIDTH/8)-1 downto 0);
S_AXI_WVALID : in std_logic;
Bus2IP_Addr : out std_logic_vector(C_S_AXI_ADDR_WIDTH-1 downto 0);
Bus2IP_BE : out std_logic_vector((C_S_AXI_DATA_WIDTH/8)-1 downto 0);
Bus2IP_CS : out std_logic_vector((C_ARD_ADDR_RANGE_ARRAY'LENGTH)/2-1 downto 0);
Bus2IP_Clk : out std_logic;
Bus2IP_Data : out std_logic_vector(C_S_AXI_DATA_WIDTH-1 downto 0);
Bus2IP_RNW : out std_logic;
Bus2IP_RdCE : out std_logic_vector(calc_num_ce(C_ARD_NUM_CE_ARRAY)-1 downto 0);
Bus2IP_Resetn : out std_logic;
Bus2IP_WrCE : out std_logic_vector(calc_num_ce(C_ARD_NUM_CE_ARRAY)-1 downto 0);
S_AXI_ARREADY : out std_logic;
S_AXI_AWREADY : out std_logic;
S_AXI_BRESP : out std_logic_vector(1 downto 0);
S_AXI_BVALID : out std_logic;
S_AXI_RDATA : out std_logic_vector(C_S_AXI_DATA_WIDTH-1 downto 0);
S_AXI_RRESP : out std_logic_vector(1 downto 0);
S_AXI_RVALID : out std_logic;
S_AXI_WREADY : out std_logic
);
end component;
component axi_master_burst
generic(
C_ADDR_PIPE_DEPTH : integer range 1 to 14 := 1;
C_FAMILY : string := "virtex6";
C_LENGTH_WIDTH : integer range 12 to 20 := 12;
C_MAX_BURST_LEN : integer range 16 to 256 := 16;
C_M_AXI_ADDR_WIDTH : integer range 32 to 32 := 32;
C_M_AXI_DATA_WIDTH : integer range 32 to 256 := 32;
C_NATIVE_DATA_WIDTH : integer range 32 to 128 := 32
);
port (
ip2bus_mst_addr : in std_logic_vector(C_M_AXI_ADDR_WIDTH-1 downto 0);
ip2bus_mst_be : in std_logic_vector((C_NATIVE_DATA_WIDTH/8)-1 downto 0);
ip2bus_mst_length : in std_logic_vector(C_LENGTH_WIDTH-1 downto 0);
ip2bus_mst_lock : in std_logic;
ip2bus_mst_reset : in std_logic;
ip2bus_mst_type : in std_logic;
ip2bus_mstrd_dst_dsc_n : in std_logic;
ip2bus_mstrd_dst_rdy_n : in std_logic;
ip2bus_mstrd_req : in std_logic;
ip2bus_mstwr_d : in std_logic_vector(C_NATIVE_DATA_WIDTH-1 downto 0);
ip2bus_mstwr_eof_n : in std_logic;
ip2bus_mstwr_rem : in std_logic_vector((C_NATIVE_DATA_WIDTH/8)-1 downto 0);
ip2bus_mstwr_req : in std_logic;
ip2bus_mstwr_sof_n : in std_logic;
ip2bus_mstwr_src_dsc_n : in std_logic;
ip2bus_mstwr_src_rdy_n : in std_logic;
m_axi_aclk : in std_logic;
m_axi_aresetn : in std_logic;
m_axi_arready : in std_logic;
m_axi_awready : in std_logic;
m_axi_bresp : in std_logic_vector(1 downto 0);
m_axi_bvalid : in std_logic;
m_axi_rdata : in std_logic_vector(C_M_AXI_DATA_WIDTH-1 downto 0);
m_axi_rlast : in std_logic;
m_axi_rresp : in std_logic_vector(1 downto 0);
m_axi_rvalid : in std_logic;
m_axi_wready : in std_logic;
bus2ip_mst_cmd_timeout : out std_logic;
bus2ip_mst_cmdack : out std_logic;
bus2ip_mst_cmplt : out std_logic;
bus2ip_mst_error : out std_logic;
bus2ip_mst_rearbitrate : out std_logic;
bus2ip_mstrd_d : out std_logic_vector(C_NATIVE_DATA_WIDTH-1 downto 0);
bus2ip_mstrd_eof_n : out std_logic;
bus2ip_mstrd_rem : out std_logic_vector((C_NATIVE_DATA_WIDTH/8)-1 downto 0);
bus2ip_mstrd_sof_n : out std_logic;
bus2ip_mstrd_src_dsc_n : out std_logic;
bus2ip_mstrd_src_rdy_n : out std_logic;
bus2ip_mstwr_dst_dsc_n : out std_logic;
bus2ip_mstwr_dst_rdy_n : out std_logic;
m_axi_araddr : out std_logic_vector(C_M_AXI_ADDR_WIDTH-1 downto 0);
m_axi_arburst : out std_logic_vector(1 downto 0);
m_axi_arcache : out std_logic_vector(3 downto 0);
m_axi_arlen : out std_logic_vector(7 downto 0);
m_axi_arprot : out std_logic_vector(2 downto 0);
m_axi_arsize : out std_logic_vector(2 downto 0);
m_axi_arvalid : out std_logic;
m_axi_awaddr : out std_logic_vector(C_M_AXI_ADDR_WIDTH-1 downto 0);
m_axi_awburst : out std_logic_vector(1 downto 0);
m_axi_awcache : out std_logic_vector(3 downto 0);
m_axi_awlen : out std_logic_vector(7 downto 0);
m_axi_awprot : out std_logic_vector(2 downto 0);
m_axi_awsize : out std_logic_vector(2 downto 0);
m_axi_awvalid : out std_logic;
m_axi_bready : out std_logic;
m_axi_rready : out std_logic;
m_axi_wdata : out std_logic_vector(C_M_AXI_DATA_WIDTH-1 downto 0);
m_axi_wlast : out std_logic;
m_axi_wstrb : out std_logic_vector((C_M_AXI_DATA_WIDTH/8)-1 downto 0);
m_axi_wvalid : out std_logic;
md_error : out std_logic
);
end component;
---- Architecture declarations -----
constant C_ADDR_PAD_ZERO : std_logic_vector(31 downto 0) := (others => '0');
-- openMAC REG PLB Slave
constant C_MAC_REG_BASE : std_logic_vector(63 downto 0) := C_ADDR_PAD_ZERO & C_S_AXI_MAC_REG_RNG0_BASEADDR;
constant C_MAC_REG_HIGH : std_logic_vector(63 downto 0) := C_ADDR_PAD_ZERO & C_S_AXI_MAC_REG_RNG0_HIGHADDR;
constant C_MAC_REG_MINSIZE : std_logic_vector(31 downto 0) := conv_std_logic_vector(get_max(conv_integer(C_S_AXI_MAC_REG_RNG0_HIGHADDR), conv_integer(C_S_AXI_MAC_REG_RNG1_HIGHADDR)), 32);
-- openMAC CMP PLB Slave
constant C_MAC_CMP_BASE : std_logic_vector(63 downto 0) := C_ADDR_PAD_ZERO & C_S_AXI_MAC_REG_RNG1_BASEADDR;
constant C_MAC_CMP_HIGH : std_logic_vector(63 downto 0) := C_ADDR_PAD_ZERO & C_S_AXI_MAC_REG_RNG1_HIGHADDR;
-- openMAC PKT PLB Slave
constant C_MAC_PKT_BASE : std_logic_vector(63 downto 0) := C_ADDR_PAD_ZERO & C_S_AXI_MAC_PKT_BASEADDR;
constant C_MAC_PKT_HIGH : std_logic_vector(63 downto 0) := C_ADDR_PAD_ZERO & C_S_AXI_MAC_PKT_HIGHADDR;
constant C_MAC_PKT_MINSIZE : std_logic_vector(31 downto 0) := C_S_AXI_MAC_PKT_HIGHADDR;
-- SimpleIO Slave
constant C_SMP_PCP_BASE : std_logic_vector(63 downto 0) := C_ADDR_PAD_ZERO & C_S_AXI_SMP_PCP_BASEADDR;
constant C_SMP_PCP_HIGH : std_logic_vector(63 downto 0) := C_ADDR_PAD_ZERO & C_S_AXI_SMP_PCP_HIGHADDR;
constant C_SMP_PCP_MINSIZE : std_logic_vector(31 downto 0) := C_S_AXI_SMP_PCP_HIGHADDR;
-- PDI PCP Slave
constant C_PDI_PCP_BASE : std_logic_vector(63 downto 0) := C_ADDR_PAD_ZERO & C_S_AXI_PDI_PCP_BASEADDR;
constant C_PDI_PCP_HIGH : std_logic_vector(63 downto 0) := C_ADDR_PAD_ZERO & C_S_AXI_PDI_PCP_HIGHADDR;
constant C_PDI_PCP_MINSIZE : std_logic_vector(31 downto 0) := C_S_AXI_PDI_PCP_HIGHADDR;
-- AP PCP Slave
constant C_PDI_AP_BASE : std_logic_vector(63 downto 0) := C_ADDR_PAD_ZERO & C_S_AXI_PDI_AP_BASEADDR;
constant C_PDI_AP_HIGH : std_logic_vector(63 downto 0) := C_ADDR_PAD_ZERO & C_S_AXI_PDI_AP_HIGHADDR;
constant C_PDI_AP_MINSIZE : std_logic_vector(31 downto 0) := C_S_AXI_PDI_AP_HIGHADDR;
-- POWERLINK IP-core
constant C_MAC_PKT_EN : boolean := C_TX_INT_PKT or C_RX_INT_PKT;
constant C_MAC_PKT_RX_EN : boolean := C_RX_INT_PKT;
constant C_DMA_EN : boolean := not C_TX_INT_PKT or not C_RX_INT_PKT;
constant C_PKT_BUF_EN : boolean := C_MAC_PKT_EN;
constant C_M_BURSTCOUNT_WIDTH : integer := integer(ceil(log2(real(get_max(C_MAC_DMA_BURST_SIZE_RX,C_MAC_DMA_BURST_SIZE_TX)/4)))) + 1; --in dwords
constant C_M_FIFO_SIZE_RX : integer := C_MAC_DMA_FIFO_SIZE_RX/4; --in dwords
constant C_M_FIFO_SIZE_TX : integer := C_MAC_DMA_FIFO_SIZE_TX/4; --in dwords
---- Constants -----
constant VCC_CONSTANT : std_logic := '1';
constant GND_CONSTANT : std_logic := '0';
---- Signal declarations used on the diagram ----
signal ap_chipselect : std_logic;
signal ap_read : std_logic;
signal ap_waitrequest : std_logic;
signal ap_write : std_logic;
signal bus2MAC_DMA_mstrd_eof_n : std_logic;
signal bus2MAC_DMA_mstrd_sof_n : std_logic;
signal bus2MAC_DMA_mstrd_src_dsc_n : std_logic;
signal bus2MAC_DMA_mstrd_src_rdy_n : std_logic;
signal bus2MAC_DMA_mstwr_dst_dsc_n : std_logic;
signal bus2MAC_DMA_mstwr_dst_rdy_n : std_logic;
signal bus2MAC_DMA_mst_cmdack : std_logic;
signal bus2MAC_DMA_mst_cmd_timeout : std_logic;
signal bus2MAC_DMA_mst_cmplt : std_logic;
signal bus2MAC_DMA_mst_error : std_logic;
signal bus2MAC_DMA_mst_rearbitrate : std_logic;
signal Bus2MAC_PKT_Clk : std_logic;
signal Bus2MAC_PKT_Reset : std_logic := '0';
signal Bus2MAC_PKT_Resetn : std_logic;
signal Bus2MAC_PKT_RNW : std_logic;
signal Bus2MAC_REG_Clk : std_logic;
signal Bus2MAC_REG_Reset : std_logic := '0';
signal Bus2MAC_REG_Resetn : std_logic;
signal Bus2MAC_REG_RNW : std_logic;
signal Bus2MAC_REG_RNW_fast : std_logic;
signal Bus2MAC_REG_RNW_n : std_logic;
signal Bus2PDI_AP_Clk : std_logic;
signal Bus2PDI_AP_Reset : std_logic := '0';
signal Bus2PDI_AP_Resetn : std_logic;
signal Bus2PDI_AP_RNW : std_logic;
signal Bus2PDI_PCP_Clk : std_logic;
signal Bus2PDI_PCP_Reset : std_logic := '0';
signal Bus2PDI_PCP_Resetn : std_logic;
signal Bus2PDI_PCP_RNW : std_logic;
signal Bus2SMP_PCP_Clk : std_logic;
signal Bus2SMP_PCP_Reset : std_logic := '0';
signal Bus2SMP_PCP_Resetn : std_logic;
signal Bus2SMP_PCP_RNW : std_logic;
signal clkAp : std_logic;
signal clkPcp : std_logic;
signal GND : std_logic;
signal IP2Bus_Error_s : std_logic;
signal IP2Bus_RdAck_fast : std_logic;
signal IP2Bus_RdAck_s : std_logic;
signal IP2Bus_WrAck_fast : std_logic;
signal IP2Bus_WrAck_s : std_logic;
signal mac_chipselect : std_logic;
signal MAC_CMP2Bus_Error : std_logic;
signal MAC_CMP2Bus_RdAck : std_logic;
signal MAC_CMP2Bus_WrAck : std_logic;
signal MAC_DMA2bus_mstrd_dst_dsc_n : std_logic;
signal MAC_DMA2bus_mstrd_dst_rdy_n : std_logic;
signal MAC_DMA2bus_mstrd_req : std_logic;
signal MAC_DMA2bus_mstwr_eof_n : std_logic;
signal MAC_DMA2bus_mstwr_req : std_logic;
signal MAC_DMA2bus_mstwr_sof_n : std_logic;
signal MAC_DMA2bus_mstwr_src_dsc_n : std_logic;
signal MAC_DMA2bus_mstwr_src_rdy_n : std_logic;
signal MAC_DMA2bus_mst_lock : std_logic;
signal MAC_DMA2bus_mst_reset : std_logic;
signal MAC_DMA2bus_mst_type : std_logic;
signal MAC_DMA_areset : std_logic;
signal mac_irq_s : std_logic;
signal MAC_PKT2Bus_Error : std_logic;
signal MAC_PKT2Bus_RdAck : std_logic;
signal MAC_PKT2Bus_WrAck : std_logic;
signal mac_read : std_logic;
signal MAC_REG2Bus_Error : std_logic;
signal MAC_REG2Bus_RdAck : std_logic;
signal MAC_REG2Bus_WrAck : std_logic;
signal mac_waitrequest : std_logic;
signal mac_write : std_logic;
signal mbf_chipselect : std_logic;
signal mbf_read : std_logic;
signal mbf_waitrequest : std_logic;
signal mbf_write : std_logic;
signal m_clk : std_logic;
signal m_read : std_logic;
signal m_readdatavalid : std_logic;
signal m_waitrequest : std_logic;
signal m_write : std_logic;
signal NET38418 : std_ulogic;
signal NET38470 : std_ulogic;
signal pcp_chipselect : std_logic;
signal pcp_read : std_logic;
signal pcp_waitrequest : std_logic;
signal pcp_write : std_logic;
signal PDI_AP2Bus_Error : std_logic;
signal PDI_AP2Bus_RdAck : std_logic;
signal PDI_AP2Bus_WrAck : std_logic;
signal PDI_PCP2Bus_Error : std_logic;
signal PDI_PCP2Bus_RdAck : std_logic;
signal PDI_PCP2Bus_WrAck : std_logic;
signal pkt_clk : std_logic;
signal rst : std_logic := '0';
signal rstAp : std_logic := '0';
signal rstPcp : std_logic := '0';
signal smp_address : std_logic;
signal smp_chipselect : std_logic;
signal SMP_PCP2Bus_Error : std_logic;
signal SMP_PCP2Bus_RdAck : std_logic;
signal SMP_PCP2Bus_WrAck : std_logic;
signal smp_read : std_logic;
signal smp_waitrequest : std_logic;
signal smp_write : std_logic;
signal tcp_chipselect : std_logic;
signal tcp_irq_s : std_logic;
signal tcp_read : std_logic;
signal tcp_waitrequest : std_logic;
signal tcp_write : std_logic;
signal VCC : std_logic;
signal ap_address : std_logic_vector (12 downto 0);
signal ap_byteenable : std_logic_vector (3 downto 0);
signal ap_readdata : std_logic_vector (31 downto 0);
signal ap_writedata : std_logic_vector (31 downto 0);
signal bus2MAC_DMA_mstrd_d : std_logic_vector (C_M_AXI_MAC_DMA_NATIVE_DWIDTH-1 downto 0);
signal bus2MAC_DMA_mstrd_rem : std_logic_vector ((C_M_AXI_MAC_DMA_NATIVE_DWIDTH/8)-1 downto 0);
signal Bus2MAC_PKT_Addr : std_logic_vector (C_S_AXI_MAC_PKT_ADDR_WIDTH-1 downto 0);
signal Bus2MAC_PKT_BE : std_logic_vector ((C_S_AXI_MAC_PKT_DATA_WIDTH/8)-1 downto 0);
signal Bus2MAC_PKT_CS : std_logic_vector (0 downto 0);
signal Bus2MAC_PKT_Data : std_logic_vector (C_S_AXI_MAC_PKT_DATA_WIDTH-1 downto 0);
signal Bus2MAC_REG_Addr : std_logic_vector (C_S_AXI_MAC_REG_ADDR_WIDTH-1 downto 0);
signal Bus2MAC_REG_BE : std_logic_vector ((C_S_AXI_MAC_REG_DATA_WIDTH/8)-1 downto 0);
signal Bus2MAC_REG_CS : std_logic_vector (1 downto 0);
signal Bus2MAC_REG_CS_fast : std_logic_vector (1 downto 0);
signal Bus2MAC_REG_Data : std_logic_vector (C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0);
signal Bus2PDI_AP_Addr : std_logic_vector (C_S_AXI_PDI_AP_ADDR_WIDTH-1 downto 0);
signal Bus2PDI_AP_BE : std_logic_vector ((C_S_AXI_PDI_AP_DATA_WIDTH/8)-1 downto 0);
signal Bus2PDI_AP_CS : std_logic_vector (0 downto 0);
signal Bus2PDI_AP_Data : std_logic_vector (C_S_AXI_PDI_AP_DATA_WIDTH-1 downto 0);
signal Bus2PDI_PCP_Addr : std_logic_vector (C_S_AXI_PDI_PCP_ADDR_WIDTH-1 downto 0);
signal Bus2PDI_PCP_BE : std_logic_vector ((C_S_AXI_PDI_PCP_DATA_WIDTH/8)-1 downto 0);
signal Bus2PDI_PCP_CS : std_logic_vector (0 downto 0);
signal Bus2PDI_PCP_Data : std_logic_vector (C_S_AXI_PDI_PCP_DATA_WIDTH-1 downto 0);
signal Bus2SMP_PCP_Addr : std_logic_vector (C_S_AXI_SMP_PCP_ADDR_WIDTH-1 downto 0);
signal Bus2SMP_PCP_BE : std_logic_vector ((C_S_AXI_SMP_PCP_DATA_WIDTH/8)-1 downto 0);
signal Bus2SMP_PCP_CS : std_logic_vector (0 downto 0);
signal Bus2SMP_PCP_Data : std_logic_vector (C_S_AXI_SMP_PCP_DATA_WIDTH-1 downto 0);
signal IP2Bus_Data_fast : std_logic_vector (C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0);
signal IP2Bus_Data_s : std_logic_vector (C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0);
signal mac_address : std_logic_vector (11 downto 0);
signal mac_address_full : std_logic_vector (C_S_AXI_MAC_REG_ADDR_WIDTH-1 downto 0);
signal mac_byteenable : std_logic_vector (1 downto 0);
signal MAC_CMP2Bus_Data : std_logic_vector (C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0);
signal MAC_DMA2Bus_MstWr_d : std_logic_vector (C_M_AXI_MAC_DMA_NATIVE_DWIDTH-1 downto 0);
signal MAC_DMA2bus_mstwr_rem : std_logic_vector ((C_M_AXI_MAC_DMA_NATIVE_DWIDTH/8)-1 downto 0);
signal MAC_DMA2bus_mst_addr : std_logic_vector (C_M_AXI_MAC_DMA_ADDR_WIDTH-1 downto 0);
signal MAC_DMA2bus_mst_be : std_logic_vector ((C_M_AXI_MAC_DMA_NATIVE_DWIDTH/8)-1 downto 0);
signal MAC_DMA2bus_mst_length : std_logic_vector (C_M_AXI_MAC_DMA_LENGTH_WIDTH-1 downto 0);
signal MAC_PKT2Bus_Data : std_logic_vector (C_S_AXI_MAC_PKT_DATA_WIDTH-1 downto 0);
signal mac_readdata : std_logic_vector (15 downto 0);
signal MAC_REG2Bus_Data : std_logic_vector (C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0);
signal mac_writedata : std_logic_vector (15 downto 0);
signal mbf_address : std_logic_vector (C_MAC_PKT_SIZE_LOG2-3 downto 0);
signal mbf_byteenable : std_logic_vector (3 downto 0);
signal mbf_readdata : std_logic_vector (31 downto 0);
signal mbf_writedata : std_logic_vector (31 downto 0);
signal m_address : std_logic_vector (31 downto 0);
signal m_burstcount : std_logic_vector (C_M_BURSTCOUNT_WIDTH-1 downto 0);
signal m_burstcounter : std_logic_vector (C_M_BURSTCOUNT_WIDTH-1 downto 0);
signal m_byteenable : std_logic_vector (3 downto 0);
signal m_readdata : std_logic_vector (31 downto 0);
signal m_writedata : std_logic_vector (31 downto 0);
signal pcp_address : std_logic_vector (12 downto 0);
signal pcp_byteenable : std_logic_vector (3 downto 0);
signal pcp_readdata : std_logic_vector (31 downto 0);
signal pcp_writedata : std_logic_vector (31 downto 0);
signal PDI_AP2Bus_Data : std_logic_vector (C_S_AXI_PDI_AP_DATA_WIDTH-1 downto 0);
signal PDI_PCP2Bus_Data : std_logic_vector (C_S_AXI_PDI_PCP_DATA_WIDTH-1 downto 0);
signal smp_byteenable : std_logic_vector (3 downto 0);
signal SMP_PCP2Bus_Data : std_logic_vector (C_S_AXI_SMP_PCP_DATA_WIDTH-1 downto 0);
signal smp_readdata : std_logic_vector (31 downto 0);
signal smp_writedata : std_logic_vector (31 downto 0);
signal tcp_address : std_logic_vector (1 downto 0);
signal tcp_byteenable : std_logic_vector (3 downto 0);
signal tcp_readdata : std_logic_vector (31 downto 0);
signal tcp_writedata : std_logic_vector (31 downto 0);
begin
---- User Signal Assignments ----
-- connect mac reg with mac cmp or reg output signals
with Bus2MAC_REG_CS select
IP2Bus_Data_s <= MAC_CMP2Bus_Data when "01",
MAC_REG2Bus_Data when others; --"10" and others are decoded to MAC_REG
IP2Bus_WrAck_s <= MAC_REG2Bus_WrAck or MAC_CMP2Bus_WrAck;
IP2Bus_RdAck_s <= MAC_REG2Bus_RdAck or MAC_CMP2Bus_RdAck;
IP2Bus_Error_s <= MAC_REG2Bus_Error or MAC_CMP2Bus_Error;
mac_address <= mac_address_full(mac_address'range);
--mac_cmp assignments
---cmp_clk <= Bus2MAC_CMP_Clk;
tcp_writedata <= Bus2MAC_REG_Data;
tcp_read <= Bus2MAC_REG_RNW;
tcp_write <= not Bus2MAC_REG_RNW;
tcp_chipselect <= Bus2MAC_REG_CS(0);
tcp_byteenable <= Bus2MAC_REG_BE;
tcp_address <= Bus2MAC_REG_Addr(3 downto 2);
MAC_CMP2Bus_Data <= tcp_readdata;
MAC_CMP2Bus_RdAck <= tcp_chipselect and tcp_read and not tcp_waitrequest;
MAC_CMP2Bus_WrAck <= tcp_chipselect and tcp_write and not tcp_waitrequest;
MAC_CMP2Bus_Error <= '0';
--mac_pkt assignments
pkt_clk <= Bus2MAC_PKT_Clk;
Bus2MAC_PKT_Reset <= not Bus2MAC_PKT_Resetn;
mbf_writedata <= Bus2MAC_PKT_Data;
-- Bus2MAC_PKT_Data(7 downto 0) & Bus2MAC_PKT_Data(15 downto 8) &
-- Bus2MAC_PKT_Data(23 downto 16) & Bus2MAC_PKT_Data(31 downto 24);
mbf_read <= Bus2MAC_PKT_RNW;
mbf_write <= not Bus2MAC_PKT_RNW;
mbf_chipselect <= Bus2MAC_PKT_CS(0);
mbf_byteenable <= Bus2MAC_PKT_BE;
mbf_address <= Bus2MAC_PKT_Addr(C_MAC_PKT_SIZE_LOG2-1 downto 2);
MAC_PKT2Bus_Data <= mbf_readdata;
MAC_PKT2Bus_RdAck <= mbf_chipselect and mbf_read and not mbf_waitrequest;
MAC_PKT2Bus_WrAck <= mbf_chipselect and mbf_write and not mbf_waitrequest;
MAC_PKT2Bus_Error <= '0';
--test_port
--test_port(181 downto 179) <= mac_chipselect & mac_write & mac_read;
--test_port(178) <= mac_waitrequest;
--test_port(177 downto 176) <= mac_byteenable;
--
--test_port(171 downto 160) <= mac_address;
--test_port(159 downto 144) <= mac_writedata;
--test_port(143 downto 128) <= mac_readdata;
--
--test_port(104 downto 102) <= Bus2MAC_REG_CS & Bus2MAC_REG_RNW;
--test_port(101 downto 100) <= IP2Bus_WrAck_s & IP2Bus_RdAck_s;
--test_port(99 downto 96) <= Bus2MAC_REG_BE;
--
--test_port(95 downto 64) <= Bus2MAC_REG_Addr;
--test_port(63 downto 32) <= Bus2MAC_REG_Data;
--test_port(31 downto 0) <= IP2Bus_Data_s;
test_port(255 downto 251) <= m_read & m_write & m_waitrequest & m_readdatavalid & MAC_DMA2Bus_Mst_Type;
test_port(244 downto 240) <= MAC_DMA2Bus_MstWr_Req & MAC_DMA2Bus_MstWr_sof_n & MAC_DMA2Bus_MstWr_eof_n & MAC_DMA2Bus_MstWr_src_rdy_n & Bus2MAC_DMA_MstWr_dst_rdy_n;
test_port(234 downto 230) <= MAC_DMA2Bus_MstRd_Req & Bus2MAC_DMA_MstRd_sof_n & Bus2MAC_DMA_MstRd_eof_n & Bus2MAC_DMA_MstRd_src_rdy_n & MAC_DMA2Bus_MstRd_dst_rdy_n;
test_port(142 downto 140) <= Bus2MAC_DMA_Mst_Cmplt & Bus2MAC_DMA_Mst_Error & Bus2MAC_DMA_Mst_Cmd_Timeout;
test_port(MAC_DMA2Bus_Mst_Length'length+120-1 downto 120) <= MAC_DMA2Bus_Mst_Length;
test_port(m_burstcount'length+110-1 downto 110) <= m_burstcount;
test_port(m_burstcounter'length+96-1 downto 96) <= m_burstcounter;
test_port(95 downto 64) <= m_address;
test_port(63 downto 32) <= m_writedata;
test_port(31 downto 0) <= m_readdata;
---- Component instantiations ----
MAC_REG_16to32 : openMAC_16to32conv
generic map (
bus_address_width => C_S_AXI_MAC_REG_ADDR_WIDTH,
gEndian => "little"
)
port map(
bus_ack_rd => MAC_REG2Bus_RdAck,
bus_ack_wr => MAC_REG2Bus_WrAck,
bus_address => Bus2MAC_REG_Addr( C_S_AXI_MAC_REG_ADDR_WIDTH-1 downto 0 ),
bus_byteenable => Bus2MAC_REG_BE( (C_S_AXI_MAC_REG_DATA_WIDTH/8)-1 downto 0 ),
bus_read => Bus2MAC_REG_RNW,
bus_readdata => MAC_REG2Bus_Data( C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0 ),
bus_select => Bus2MAC_REG_CS(1),
bus_write => Bus2MAC_REG_RNW_n,
bus_writedata => Bus2MAC_REG_Data( C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0 ),
clk => clk50,
rst => Bus2MAC_REG_Reset,
s_address => mac_address_full( C_S_AXI_MAC_REG_ADDR_WIDTH-1 downto 0 ),
s_byteenable => mac_byteenable,
s_chipselect => mac_chipselect,
s_read => mac_read,
s_readdata => mac_readdata,
s_waitrequest => mac_waitrequest,
s_write => mac_write,
s_writedata => mac_writedata
);
MAC_REG_AXI_SINGLE_SLAVE : axi_lite_ipif
generic map (
C_ARD_ADDR_RANGE_ARRAY => (C_MAC_REG_BASE,C_MAC_REG_HIGH,C_MAC_CMP_BASE,C_MAC_CMP_HIGH),
C_ARD_NUM_CE_ARRAY => (1,1),
C_DPHASE_TIMEOUT => C_S_AXI_MAC_REG_DPHASE_TIMEOUT,
C_FAMILY => C_FAMILY,
C_S_AXI_ADDR_WIDTH => C_S_AXI_MAC_REG_ADDR_WIDTH,
C_S_AXI_DATA_WIDTH => C_S_AXI_MAC_REG_DATA_WIDTH,
C_S_AXI_MIN_SIZE => C_MAC_REG_MINSIZE,
C_USE_WSTRB => C_S_AXI_MAC_REG_USE_WSTRB
)
port map(
Bus2IP_Addr => Bus2MAC_REG_Addr( C_S_AXI_MAC_REG_ADDR_WIDTH-1 downto 0 ),
Bus2IP_BE => Bus2MAC_REG_BE( (C_S_AXI_MAC_REG_DATA_WIDTH/8)-1 downto 0 ),
Bus2IP_CS => Bus2MAC_REG_CS_fast( 1 downto 0 ),
Bus2IP_Clk => Bus2MAC_REG_Clk,
Bus2IP_Data => Bus2MAC_REG_Data( C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0 ),
Bus2IP_RNW => Bus2MAC_REG_RNW_fast,
Bus2IP_RdCE => open,
Bus2IP_Resetn => Bus2MAC_REG_Resetn,
Bus2IP_WrCE => open,
IP2Bus_Data => IP2Bus_Data_fast( C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0 ),
IP2Bus_Error => IP2Bus_Error_s,
IP2Bus_RdAck => IP2Bus_RdAck_fast,
IP2Bus_WrAck => IP2Bus_WrAck_fast,
S_AXI_ACLK => S_AXI_MAC_REG_ACLK,
S_AXI_ARADDR => S_AXI_MAC_REG_ARADDR( C_S_AXI_MAC_REG_ADDR_WIDTH-1 downto 0 ),
S_AXI_ARESETN => S_AXI_MAC_REG_ARESETN,
S_AXI_ARREADY => S_AXI_MAC_REG_ARREADY,
S_AXI_ARVALID => S_AXI_MAC_REG_ARVALID,
S_AXI_AWADDR => S_AXI_MAC_REG_AWADDR( C_S_AXI_MAC_REG_ADDR_WIDTH-1 downto 0 ),
S_AXI_AWREADY => S_AXI_MAC_REG_AWREADY,
S_AXI_AWVALID => S_AXI_MAC_REG_AWVALID,
S_AXI_BREADY => S_AXI_MAC_REG_BREADY,
S_AXI_BRESP => S_AXI_MAC_REG_BRESP,
S_AXI_BVALID => S_AXI_MAC_REG_BVALID,
S_AXI_RDATA => S_AXI_MAC_REG_RDATA( C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0 ),
S_AXI_RREADY => S_AXI_MAC_REG_RREADY,
S_AXI_RRESP => S_AXI_MAC_REG_RRESP,
S_AXI_RVALID => S_AXI_MAC_REG_RVALID,
S_AXI_WDATA => S_AXI_MAC_REG_WDATA( C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0 ),
S_AXI_WREADY => S_AXI_MAC_REG_WREADY,
S_AXI_WSTRB => S_AXI_MAC_REG_WSTRB( (C_S_AXI_MAC_REG_DATA_WIDTH/8)-1 downto 0 ),
S_AXI_WVALID => S_AXI_MAC_REG_WVALID
);
THE_POWERLINK_IP_CORE : powerlink
generic map (
Simulate => booleanToInteger(false),
endian_g => "little",
gNumSmi => C_NUM_SMI,
genABuf1_g => booleanToInteger(C_PDI_GEN_ASYNC_BUF_0),
genABuf2_g => booleanToInteger(C_PDI_GEN_ASYNC_BUF_1),
genEvent_g => booleanToInteger(C_PDI_GEN_EVENT),
genInternalAp_g => booleanToInteger(C_GEN_AXI_BUS_IF),
genIoBuf_g => booleanToInteger(false),
genLedGadget_g => booleanToInteger(C_PDI_GEN_LED),
genOnePdiClkDomain_g => booleanToInteger(false),
genPdi_g => booleanToInteger(C_GEN_PDI),
genSimpleIO_g => booleanToInteger(C_GEN_SIMPLE_IO),
genSmiIO => booleanToInteger(false),
genSpiAp_g => booleanToInteger(C_GEN_SPI_IF),
genTimeSync_g => booleanToInteger(C_PDI_GEN_TIME_SYNC),
gen_dma_observer_g => booleanToInteger(C_OBSERVER_ENABLE),
iAsyBuf1Size_g => C_PDI_ASYNC_BUF_0,
iAsyBuf2Size_g => C_PDI_ASYNC_BUF_1,
iBufSizeLOG2_g => C_MAC_PKT_SIZE_LOG2,
iBufSize_g => C_MAC_PKT_SIZE,
iPdiRev_g => C_PDI_REV,
iRpdo0BufSize_g => C_RPDO_0_BUF_SIZE,
iRpdo1BufSize_g => C_RPDO_1_BUF_SIZE,
iRpdo2BufSize_g => C_RPDO_2_BUF_SIZE,
iRpdos_g => C_NUM_RPDO,
iTpdoBufSize_g => C_TPDO_BUF_SIZE,
iTpdos_g => C_NUM_TPDO,
m_burstcount_const_g => booleanToInteger(true),
m_burstcount_width_g => C_M_BURSTCOUNT_WIDTH,
m_data_width_g => 32,
m_rx_burst_size_g => C_MAC_DMA_BURST_SIZE_RX/4,
m_rx_fifo_size_g => C_M_FIFO_SIZE_RX,
m_tx_burst_size_g => C_MAC_DMA_BURST_SIZE_TX/4,
m_tx_fifo_size_g => C_M_FIFO_SIZE_TX,
papBigEnd_g => booleanToInteger(false),
papDataWidth_g => C_PAP_DATA_WIDTH,
papLowAct_g => booleanToInteger(C_PAP_LOW_ACT),
pcpSysId => C_PCP_SYS_ID,
pioValLen_g => C_PIO_VAL_LENGTH,
pulseWidth2ndCmpTimer_g => C_PULSE_WIDTH_2nd_CMP_TIMER,
spiBigEnd_g => booleanToInteger(false),
spiCPHA_g => booleanToInteger(C_SPI_CPHA),
spiCPOL_g => booleanToInteger(C_SPI_CPOL),
use2ndCmpTimer_g => booleanToInteger(C_MAC_GEN_SECOND_TIMER),
use2ndPhy_g => booleanToInteger(C_USE_2ND_PHY),
useIntPacketBuf_g => booleanToInteger(C_MAC_PKT_EN),
usePulse2ndCmpTimer_g => booleanToInteger(C_USE_PULSE_2nd_CMP_TIMER),
useRmii_g => booleanToInteger(C_USE_RMII),
useRxIntPacketBuf_g => booleanToInteger(C_MAC_PKT_RX_EN)
)
port map(
ap_address => ap_address,
ap_asyncIrq => ap_asyncIrq,
ap_asyncIrq_n => ap_asyncIrq_n,
ap_byteenable => ap_byteenable,
ap_chipselect => ap_chipselect,
ap_irq => open,
ap_irq_n => open,
ap_read => ap_read,
ap_readdata => ap_readdata,
ap_syncIrq => ap_syncIrq,
ap_syncIrq_n => ap_syncIrq_n,
ap_waitrequest => ap_waitrequest,
ap_write => ap_write,
ap_writedata => ap_writedata,
clk50 => clk50,
clkAp => clkAp,
clkEth => clk100,
clkPcp => clkPcp,
led_error => led_error,
led_gpo => led_gpo,
led_opt => led_opt,
led_phyAct => led_phyAct,
led_phyLink => led_phyLink,
led_status => led_status,
m_address => m_address,
m_burstcount => m_burstcount( C_M_BURSTCOUNT_WIDTH-1 downto 0 ),
m_burstcounter => m_burstcounter( C_M_BURSTCOUNT_WIDTH-1 downto 0 ),
m_byteenable => m_byteenable( 3 downto 0 ),
m_clk => m_clk,
m_read => m_read,
m_readdata => m_readdata( 31 downto 0 ),
m_readdatavalid => m_readdatavalid,
m_waitrequest => m_waitrequest,
m_write => m_write,
m_writedata => m_writedata( 31 downto 0 ),
mac_address => mac_address,
mac_byteenable => mac_byteenable,
mac_chipselect => mac_chipselect,
mac_irq => mac_irq_s,
mac_read => mac_read,
mac_readdata => mac_readdata,
mac_waitrequest => mac_waitrequest,
mac_write => mac_write,
mac_writedata => mac_writedata,
mbf_address => mbf_address( C_MAC_PKT_SIZE_LOG2-3 downto 0 ),
mbf_byteenable => mbf_byteenable,
mbf_chipselect => mbf_chipselect,
mbf_read => mbf_read,
mbf_readdata => mbf_readdata,
mbf_waitrequest => mbf_waitrequest,
mbf_write => mbf_write,
mbf_writedata => mbf_writedata,
pap_ack => pap_ack,
pap_ack_n => pap_ack_n,
pap_addr => pap_addr,
pap_be => pap_be( C_PAP_DATA_WIDTH/8-1 downto 0 ),
pap_be_n => pap_be_n( C_PAP_DATA_WIDTH/8-1 downto 0 ),
pap_cs => pap_cs,
pap_cs_n => pap_cs_n,
pap_data => open,
pap_data_I => pap_data_I( C_PAP_DATA_WIDTH-1 downto 0 ),
pap_data_O => pap_data_O( C_PAP_DATA_WIDTH-1 downto 0 ),
pap_data_T => pap_data_T,
pap_gpio => open,
pap_gpio_I => pap_gpio_I,
pap_gpio_O => pap_gpio_O,
pap_gpio_T => pap_gpio_T,
pap_rd => pap_rd,
pap_rd_n => pap_rd_n,
pap_wr => pap_wr,
pap_wr_n => pap_wr_n,
pcp_address => pcp_address,
pcp_byteenable => pcp_byteenable,
pcp_chipselect => pcp_chipselect,
pcp_read => pcp_read,
pcp_readdata => pcp_readdata,
pcp_waitrequest => pcp_waitrequest,
pcp_write => pcp_write,
pcp_writedata => pcp_writedata,
phy0_Rst_n => phy0_Rst_n,
phy0_RxDat => phy0_RxDat,
phy0_RxDv => phy0_RxDv,
phy0_RxErr => phy0_RxErr,
phy0_SMIClk => phy0_SMIClk,
phy0_SMIDat => open,
phy0_SMIDat_I => phy0_SMIDat_I,
phy0_SMIDat_O => phy0_SMIDat_O,
phy0_SMIDat_T => phy0_SMIDat_T,
phy0_TxDat => phy0_TxDat,
phy0_TxEn => phy0_TxEn,
phy0_link => phy0_link,
phy1_Rst_n => phy1_Rst_n,
phy1_RxDat => phy1_RxDat,
phy1_RxDv => phy1_RxDv,
phy1_RxErr => phy1_RxErr,
phy1_SMIClk => phy1_SMIClk,
phy1_SMIDat => open,
phy1_SMIDat_I => phy1_SMIDat_I,
phy1_SMIDat_O => phy1_SMIDat_O,
phy1_SMIDat_T => phy1_SMIDat_T,
phy1_TxDat => phy1_TxDat,
phy1_TxEn => phy1_TxEn,
phy1_link => phy1_link,
phyMii0_RxClk => phyMii0_RxClk,
phyMii0_RxDat => phyMii0_RxDat,
phyMii0_RxDv => phyMii0_RxDv,
phyMii0_RxEr => phyMii0_RxEr,
phyMii0_TxClk => phyMii0_TxClk,
phyMii0_TxDat => phyMii0_TxDat,
phyMii0_TxEn => phyMii0_TxEn,
phyMii0_TxEr => phyMii0_TxEr,
phyMii1_RxClk => phyMii1_RxClk,
phyMii1_RxDat => phyMii1_RxDat,
phyMii1_RxDv => phyMii1_RxDv,
phyMii1_RxEr => phyMii1_RxEr,
phyMii1_TxClk => phyMii1_TxClk,
phyMii1_TxDat => phyMii1_TxDat,
phyMii1_TxEn => phyMii1_TxEn,
phyMii1_TxEr => phyMii1_TxEr,
phy_Rst_n => phy_Rst_n,
phy_SMIClk => phy_SMIClk,
phy_SMIDat => open,
phy_SMIDat_I => phy_SMIDat_I,
phy_SMIDat_O => phy_SMIDat_O,
phy_SMIDat_T => phy_SMIDat_T,
pio_operational => pio_operational,
pio_pconfig => pio_pconfig,
pio_portInLatch => pio_portInLatch,
pio_portOutValid => pio_portOutValid,
pio_portio => open,
pio_portio_I => pio_portio_I,
pio_portio_O => pio_portio_O,
pio_portio_T => pio_portio_T,
pkt_clk => pkt_clk,
rst => rst,
rstAp => rstAp,
rstPcp => rstPcp,
smp_address => smp_address,
smp_byteenable => smp_byteenable,
smp_read => smp_read,
smp_readdata => smp_readdata,
smp_waitrequest => smp_waitrequest,
smp_write => smp_write,
smp_writedata => smp_writedata,
spi_clk => spi_clk,
spi_miso => spi_miso,
spi_mosi => spi_mosi,
spi_sel_n => spi_sel_n,
tcp_address => tcp_address,
tcp_byteenable => tcp_byteenable,
tcp_chipselect => tcp_chipselect,
tcp_irq => tcp_irq_s,
tcp_read => tcp_read,
tcp_readdata => tcp_readdata,
tcp_waitrequest => tcp_waitrequest,
tcp_write => tcp_write,
tcp_writedata => tcp_writedata
);
MAC_DMA_areset <= not(M_AXI_MAC_DMA_aresetn);
Bus2MAC_REG_RNW_n <= not(Bus2MAC_REG_RNW);
Bus2MAC_REG_Reset <= not(Bus2MAC_REG_Resetn);
rstPcp <= Bus2SMP_PCP_Reset or Bus2PDI_PCP_Reset or Bus2MAC_PKT_Reset;
rstAp <= Bus2PDI_AP_Reset;
rst <= Bus2MAC_REG_Reset;
macRegClkXing : clkXing
generic map (
gCsNum => 2,
gDataWidth => C_S_AXI_MAC_REG_DATA_WIDTH
)
port map(
iArst => Bus2MAC_REG_Reset,
iFastClk => Bus2MAC_REG_Clk,
iFastCs => Bus2MAC_REG_CS_fast( 1 downto 0 ),
iFastRNW => Bus2MAC_REG_RNW_fast,
iSlowClk => clk50,
iSlowRdAck => IP2Bus_RdAck_s,
iSlowReaddata => IP2Bus_Data_s( C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0 ),
iSlowWrAck => IP2Bus_WrAck_s,
oFastRdAck => IP2Bus_RdAck_fast,
oFastReaddata => IP2Bus_Data_fast( C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0 ),
oFastWrAck => IP2Bus_WrAck_fast,
oSlowCs => Bus2MAC_REG_CS( 1 downto 0 ),
oSlowRNW => Bus2MAC_REG_RNW
);
---- Power , ground assignment ----
GND <= GND_CONSTANT;
VCC <= VCC_CONSTANT;
MAC_REG2Bus_Error <= GND;
---- Terminal assignment ----
-- Output\buffer terminals
mac_irq <= mac_irq_s;
tcp_irq <= tcp_irq_s;
---- Generate statements ----
genMacDmaPlbBurst : if C_DMA_EN = TRUE generate
begin
MAC_DMA_AXI_BURST_MASTER : axi_master_burst
generic map (
C_ADDR_PIPE_DEPTH => 1,
C_FAMILY => C_FAMILY,
C_LENGTH_WIDTH => C_M_AXI_MAC_DMA_LENGTH_WIDTH,
C_MAX_BURST_LEN => C_M_AXI_MAC_DMA_MAX_BURST_LEN,
C_M_AXI_ADDR_WIDTH => C_M_AXI_MAC_DMA_ADDR_WIDTH,
C_M_AXI_DATA_WIDTH => C_M_AXI_MAC_DMA_DATA_WIDTH,
C_NATIVE_DATA_WIDTH => C_M_AXI_MAC_DMA_NATIVE_DWIDTH
)
port map(
bus2ip_mst_cmd_timeout => bus2MAC_DMA_mst_cmd_timeout,
bus2ip_mst_cmdack => bus2MAC_DMA_mst_cmdack,
bus2ip_mst_cmplt => bus2MAC_DMA_mst_cmplt,
bus2ip_mst_error => bus2MAC_DMA_mst_error,
bus2ip_mst_rearbitrate => bus2MAC_DMA_mst_rearbitrate,
bus2ip_mstrd_d => bus2MAC_DMA_mstrd_d( C_M_AXI_MAC_DMA_NATIVE_DWIDTH-1 downto 0 ),
bus2ip_mstrd_eof_n => bus2MAC_DMA_mstrd_eof_n,
bus2ip_mstrd_rem => bus2MAC_DMA_mstrd_rem( (C_M_AXI_MAC_DMA_NATIVE_DWIDTH/8)-1 downto 0 ),
bus2ip_mstrd_sof_n => bus2MAC_DMA_mstrd_sof_n,
bus2ip_mstrd_src_dsc_n => bus2MAC_DMA_mstrd_src_dsc_n,
bus2ip_mstrd_src_rdy_n => bus2MAC_DMA_mstrd_src_rdy_n,
bus2ip_mstwr_dst_dsc_n => bus2MAC_DMA_mstwr_dst_dsc_n,
bus2ip_mstwr_dst_rdy_n => bus2MAC_DMA_mstwr_dst_rdy_n,
ip2bus_mst_addr => MAC_DMA2bus_mst_addr( C_M_AXI_MAC_DMA_ADDR_WIDTH-1 downto 0 ),
ip2bus_mst_be => MAC_DMA2bus_mst_be( (C_M_AXI_MAC_DMA_NATIVE_DWIDTH/8)-1 downto 0 ),
ip2bus_mst_length => MAC_DMA2bus_mst_length( C_M_AXI_MAC_DMA_LENGTH_WIDTH-1 downto 0 ),
ip2bus_mst_lock => MAC_DMA2bus_mst_lock,
ip2bus_mst_reset => MAC_DMA2bus_mst_reset,
ip2bus_mst_type => MAC_DMA2bus_mst_type,
ip2bus_mstrd_dst_dsc_n => MAC_DMA2bus_mstrd_dst_dsc_n,
ip2bus_mstrd_dst_rdy_n => MAC_DMA2bus_mstrd_dst_rdy_n,
ip2bus_mstrd_req => MAC_DMA2bus_mstrd_req,
ip2bus_mstwr_d => MAC_DMA2bus_mstwr_d( C_M_AXI_MAC_DMA_NATIVE_DWIDTH-1 downto 0 ),
ip2bus_mstwr_eof_n => MAC_DMA2bus_mstwr_eof_n,
ip2bus_mstwr_rem => MAC_DMA2bus_mstwr_rem( (C_M_AXI_MAC_DMA_NATIVE_DWIDTH/8)-1 downto 0 ),
ip2bus_mstwr_req => MAC_DMA2bus_mstwr_req,
ip2bus_mstwr_sof_n => MAC_DMA2bus_mstwr_sof_n,
ip2bus_mstwr_src_dsc_n => MAC_DMA2bus_mstwr_src_dsc_n,
ip2bus_mstwr_src_rdy_n => MAC_DMA2bus_mstwr_src_rdy_n,
m_axi_aclk => M_AXI_MAC_DMA_aclk,
m_axi_araddr => M_AXI_MAC_DMA_araddr( C_M_AXI_MAC_DMA_ADDR_WIDTH-1 downto 0 ),
m_axi_arburst => M_AXI_MAC_DMA_arburst,
m_axi_arcache => M_AXI_MAC_DMA_arcache,
m_axi_aresetn => M_AXI_MAC_DMA_aresetn,
m_axi_arlen => M_AXI_MAC_DMA_arlen,
m_axi_arprot => M_AXI_MAC_DMA_arprot,
m_axi_arready => M_AXI_MAC_DMA_arready,
m_axi_arsize => M_AXI_MAC_DMA_arsize,
m_axi_arvalid => M_AXI_MAC_DMA_arvalid,
m_axi_awaddr => M_AXI_MAC_DMA_awaddr( C_M_AXI_MAC_DMA_ADDR_WIDTH-1 downto 0 ),
m_axi_awburst => M_AXI_MAC_DMA_awburst,
m_axi_awcache => M_AXI_MAC_DMA_awcache,
m_axi_awlen => M_AXI_MAC_DMA_awlen,
m_axi_awprot => M_AXI_MAC_DMA_awprot,
m_axi_awready => M_AXI_MAC_DMA_awready,
m_axi_awsize => M_AXI_MAC_DMA_awsize,
m_axi_awvalid => M_AXI_MAC_DMA_awvalid,
m_axi_bready => M_AXI_MAC_DMA_bready,
m_axi_bresp => M_AXI_MAC_DMA_bresp,
m_axi_bvalid => M_AXI_MAC_DMA_bvalid,
m_axi_rdata => M_AXI_MAC_DMA_rdata( C_M_AXI_MAC_DMA_DATA_WIDTH-1 downto 0 ),
m_axi_rlast => M_AXI_MAC_DMA_rlast,
m_axi_rready => M_AXI_MAC_DMA_rready,
m_axi_rresp => M_AXI_MAC_DMA_rresp,
m_axi_rvalid => M_AXI_MAC_DMA_rvalid,
m_axi_wdata => M_AXI_MAC_DMA_wdata( C_M_AXI_MAC_DMA_DATA_WIDTH-1 downto 0 ),
m_axi_wlast => M_AXI_MAC_DMA_wlast,
m_axi_wready => M_AXI_MAC_DMA_wready,
m_axi_wstrb => M_AXI_MAC_DMA_wstrb( (C_M_AXI_MAC_DMA_DATA_WIDTH/8)-1 downto 0 ),
m_axi_wvalid => M_AXI_MAC_DMA_wvalid,
md_error => M_AXI_MAC_DMA_md_error
);
end generate genMacDmaPlbBurst;
genThePlbMaster : if C_DMA_EN = TRUE generate
begin
THE_IPIF_MASTER_HANDLER : ipif_master_handler
generic map (
C_MAC_DMA_IPIF_AWIDTH => C_M_AXI_MAC_DMA_ADDR_WIDTH,
C_MAC_DMA_IPIF_NATIVE_DWIDTH => C_M_AXI_MAC_DMA_NATIVE_DWIDTH,
dma_highadr_g => m_address'high,
gen_rx_fifo_g => not C_RX_INT_PKT,
gen_tx_fifo_g => not C_TX_INT_PKT,
m_burstcount_width_g => C_M_BURSTCOUNT_WIDTH
)
port map(
Bus2MAC_DMA_MstRd_d => bus2MAC_DMA_mstrd_d( C_M_AXI_MAC_DMA_NATIVE_DWIDTH-1 downto 0 ),
Bus2MAC_DMA_MstRd_eof_n => bus2MAC_DMA_mstrd_eof_n,
Bus2MAC_DMA_MstRd_rem => bus2MAC_DMA_mstrd_rem( (C_M_AXI_MAC_DMA_NATIVE_DWIDTH/8)-1 downto 0 ),
Bus2MAC_DMA_MstRd_sof_n => bus2MAC_DMA_mstrd_sof_n,
Bus2MAC_DMA_MstRd_src_dsc_n => bus2MAC_DMA_mstrd_src_dsc_n,
Bus2MAC_DMA_MstRd_src_rdy_n => bus2MAC_DMA_mstrd_src_rdy_n,
Bus2MAC_DMA_MstWr_dst_dsc_n => bus2MAC_DMA_mstwr_dst_dsc_n,
Bus2MAC_DMA_MstWr_dst_rdy_n => bus2MAC_DMA_mstwr_dst_rdy_n,
Bus2MAC_DMA_Mst_CmdAck => bus2MAC_DMA_mst_cmdack,
Bus2MAC_DMA_Mst_Cmd_Timeout => bus2MAC_DMA_mst_cmd_timeout,
Bus2MAC_DMA_Mst_Cmplt => bus2MAC_DMA_mst_cmplt,
Bus2MAC_DMA_Mst_Error => bus2MAC_DMA_mst_error,
Bus2MAC_DMA_Mst_Rearbitrate => bus2MAC_DMA_mst_rearbitrate,
MAC_DMA2Bus_MstRd_Req => MAC_DMA2bus_mstrd_req,
MAC_DMA2Bus_MstRd_dst_dsc_n => MAC_DMA2bus_mstrd_dst_dsc_n,
MAC_DMA2Bus_MstRd_dst_rdy_n => MAC_DMA2bus_mstrd_dst_rdy_n,
MAC_DMA2Bus_MstWr_Req => MAC_DMA2bus_mstwr_req,
MAC_DMA2Bus_MstWr_d => MAC_DMA2Bus_MstWr_d( C_M_AXI_MAC_DMA_NATIVE_DWIDTH-1 downto 0 ),
MAC_DMA2Bus_MstWr_eof_n => MAC_DMA2bus_mstwr_eof_n,
MAC_DMA2Bus_MstWr_rem => MAC_DMA2bus_mstwr_rem( (C_M_AXI_MAC_DMA_NATIVE_DWIDTH/8)-1 downto 0 ),
MAC_DMA2Bus_MstWr_sof_n => MAC_DMA2bus_mstwr_sof_n,
MAC_DMA2Bus_MstWr_src_dsc_n => MAC_DMA2bus_mstwr_src_dsc_n,
MAC_DMA2Bus_MstWr_src_rdy_n => MAC_DMA2bus_mstwr_src_rdy_n,
MAC_DMA2Bus_Mst_Addr => MAC_DMA2bus_mst_addr( C_M_AXI_MAC_DMA_ADDR_WIDTH-1 downto 0 ),
MAC_DMA2Bus_Mst_BE => MAC_DMA2bus_mst_be( (C_M_AXI_MAC_DMA_NATIVE_DWIDTH/8)-1 downto 0 ),
MAC_DMA2Bus_Mst_Length => MAC_DMA2bus_mst_length( C_M_AXI_MAC_DMA_LENGTH_WIDTH-1 downto 0 ),
MAC_DMA2Bus_Mst_Lock => MAC_DMA2bus_mst_lock,
MAC_DMA2Bus_Mst_Reset => MAC_DMA2bus_mst_reset,
MAC_DMA2Bus_Mst_Type => MAC_DMA2bus_mst_type,
MAC_DMA_CLK => M_AXI_MAC_DMA_aclk,
MAC_DMA_Rst => MAC_DMA_areset,
m_address => m_address( 31 downto 0 ),
m_burstcount => m_burstcount( C_M_BURSTCOUNT_WIDTH-1 downto 0 ),
m_burstcounter => m_burstcounter( C_M_BURSTCOUNT_WIDTH-1 downto 0 ),
m_byteenable => m_byteenable,
m_clk => m_clk,
m_read => m_read,
m_readdata => m_readdata,
m_readdatavalid => m_readdatavalid,
m_waitrequest => m_waitrequest,
m_write => m_write,
m_writedata => m_writedata
);
end generate genThePlbMaster;
genMacPktPLbSingleSlave : if C_PKT_BUF_EN generate
begin
MAC_PKT_AXI_SINGLE_SLAVE : axi_lite_ipif
generic map (
C_ARD_ADDR_RANGE_ARRAY => (C_MAC_PKT_BASE,C_MAC_PKT_HIGH),
C_ARD_NUM_CE_ARRAY => (0=>1),
C_DPHASE_TIMEOUT => C_S_AXI_MAC_PKT_DPHASE_TIMEOUT,
C_FAMILY => C_FAMILY,
C_S_AXI_ADDR_WIDTH => C_S_AXI_MAC_PKT_ADDR_WIDTH,
C_S_AXI_DATA_WIDTH => C_S_AXI_MAC_PKT_DATA_WIDTH,
C_S_AXI_MIN_SIZE => C_MAC_PKT_MINSIZE,
C_USE_WSTRB => C_S_AXI_MAC_PKT_USE_WSTRB
)
port map(
Bus2IP_Addr => Bus2MAC_PKT_Addr( C_S_AXI_MAC_PKT_ADDR_WIDTH-1 downto 0 ),
Bus2IP_BE => Bus2MAC_PKT_BE( (C_S_AXI_MAC_PKT_DATA_WIDTH/8)-1 downto 0 ),
Bus2IP_CS => Bus2MAC_PKT_CS( 0 downto 0 ),
Bus2IP_Clk => Bus2MAC_PKT_Clk,
Bus2IP_Data => Bus2MAC_PKT_Data( C_S_AXI_MAC_PKT_DATA_WIDTH-1 downto 0 ),
Bus2IP_RNW => Bus2MAC_PKT_RNW,
Bus2IP_RdCE => open,
Bus2IP_Resetn => Bus2MAC_PKT_Resetn,
Bus2IP_WrCE => open,
IP2Bus_Data => MAC_PKT2Bus_Data( C_S_AXI_MAC_PKT_DATA_WIDTH-1 downto 0 ),
IP2Bus_Error => MAC_PKT2Bus_Error,
IP2Bus_RdAck => MAC_PKT2Bus_RdAck,
IP2Bus_WrAck => MAC_PKT2Bus_WrAck,
S_AXI_ACLK => S_AXI_MAC_PKT_ACLK,
S_AXI_ARADDR => S_AXI_MAC_PKT_ARADDR( C_S_AXI_MAC_PKT_ADDR_WIDTH-1 downto 0 ),
S_AXI_ARESETN => S_AXI_MAC_PKT_ARESETN,
S_AXI_ARREADY => S_AXI_MAC_PKT_ARREADY,
S_AXI_ARVALID => S_AXI_MAC_PKT_ARVALID,
S_AXI_AWADDR => S_AXI_MAC_PKT_AWADDR( C_S_AXI_MAC_PKT_ADDR_WIDTH-1 downto 0 ),
S_AXI_AWREADY => S_AXI_MAC_PKT_AWREADY,
S_AXI_AWVALID => S_AXI_MAC_PKT_AWVALID,
S_AXI_BREADY => S_AXI_MAC_PKT_BREADY,
S_AXI_BRESP => S_AXI_MAC_PKT_BRESP,
S_AXI_BVALID => S_AXI_MAC_PKT_BVALID,
S_AXI_RDATA => S_AXI_MAC_PKT_RDATA( C_S_AXI_MAC_PKT_DATA_WIDTH-1 downto 0 ),
S_AXI_RREADY => S_AXI_MAC_PKT_RREADY,
S_AXI_RRESP => S_AXI_MAC_PKT_RRESP,
S_AXI_RVALID => S_AXI_MAC_PKT_RVALID,
S_AXI_WDATA => S_AXI_MAC_PKT_WDATA( C_S_AXI_MAC_PKT_DATA_WIDTH-1 downto 0 ),
S_AXI_WREADY => S_AXI_MAC_PKT_WREADY,
S_AXI_WSTRB => S_AXI_MAC_PKT_WSTRB( (C_S_AXI_MAC_PKT_DATA_WIDTH/8)-1 downto 0 ),
S_AXI_WVALID => S_AXI_MAC_PKT_WVALID
);
end generate genMacPktPLbSingleSlave;
genPdiPcp : if (C_GEN_PDI) generate
begin
PDI_PCP_AXI_SINGLE_SLAVE : axi_lite_ipif
generic map (
C_ARD_ADDR_RANGE_ARRAY => (C_PDI_PCP_BASE,C_PDI_PCP_HIGH),
C_ARD_NUM_CE_ARRAY => (0=>1),
C_DPHASE_TIMEOUT => C_S_AXI_PDI_PCP_DPHASE_TIMEOUT,
C_FAMILY => C_FAMILY,
C_S_AXI_ADDR_WIDTH => C_S_AXI_PDI_PCP_ADDR_WIDTH,
C_S_AXI_DATA_WIDTH => C_S_AXI_PDI_PCP_DATA_WIDTH,
C_S_AXI_MIN_SIZE => C_PDI_PCP_MINSIZE,
C_USE_WSTRB => C_S_AXI_PDI_PCP_USE_WSTRB
)
port map(
Bus2IP_Addr => Bus2PDI_PCP_Addr( C_S_AXI_PDI_PCP_ADDR_WIDTH-1 downto 0 ),
Bus2IP_BE => Bus2PDI_PCP_BE( (C_S_AXI_PDI_PCP_DATA_WIDTH/8)-1 downto 0 ),
Bus2IP_CS => Bus2PDI_PCP_CS( 0 downto 0 ),
Bus2IP_Clk => Bus2PDI_PCP_Clk,
Bus2IP_Data => Bus2PDI_PCP_Data( C_S_AXI_PDI_PCP_DATA_WIDTH-1 downto 0 ),
Bus2IP_RNW => Bus2PDI_PCP_RNW,
Bus2IP_RdCE => open,
Bus2IP_Resetn => Bus2PDI_PCP_Resetn,
Bus2IP_WrCE => open,
IP2Bus_Data => PDI_PCP2Bus_Data( C_S_AXI_PDI_PCP_DATA_WIDTH-1 downto 0 ),
IP2Bus_Error => PDI_PCP2Bus_Error,
IP2Bus_RdAck => PDI_PCP2Bus_RdAck,
IP2Bus_WrAck => PDI_PCP2Bus_WrAck,
S_AXI_ACLK => S_AXI_PDI_PCP_ACLK,
S_AXI_ARADDR => S_AXI_PDI_PCP_ARADDR( C_S_AXI_PDI_PCP_ADDR_WIDTH-1 downto 0 ),
S_AXI_ARESETN => S_AXI_PDI_PCP_ARESETN,
S_AXI_ARREADY => S_AXI_PDI_PCP_ARREADY,
S_AXI_ARVALID => S_AXI_PDI_PCP_ARVALID,
S_AXI_AWADDR => S_AXI_PDI_PCP_AWADDR( C_S_AXI_PDI_PCP_ADDR_WIDTH-1 downto 0 ),
S_AXI_AWREADY => S_AXI_PDI_PCP_AWREADY,
S_AXI_AWVALID => S_AXI_PDI_PCP_AWVALID,
S_AXI_BREADY => S_AXI_PDI_PCP_BREADY,
S_AXI_BRESP => S_AXI_PDI_PCP_BRESP,
S_AXI_BVALID => S_AXI_PDI_PCP_BVALID,
S_AXI_RDATA => S_AXI_PDI_PCP_RDATA( C_S_AXI_PDI_PCP_DATA_WIDTH-1 downto 0 ),
S_AXI_RREADY => S_AXI_PDI_PCP_RREADY,
S_AXI_RRESP => S_AXI_PDI_PCP_RRESP,
S_AXI_RVALID => S_AXI_PDI_PCP_RVALID,
S_AXI_WDATA => S_AXI_PDI_PCP_WDATA( C_S_AXI_PDI_PCP_DATA_WIDTH-1 downto 0 ),
S_AXI_WREADY => S_AXI_PDI_PCP_WREADY,
S_AXI_WSTRB => S_AXI_PDI_PCP_WSTRB( (C_S_AXI_PDI_PCP_DATA_WIDTH/8)-1 downto 0 ),
S_AXI_WVALID => S_AXI_PDI_PCP_WVALID
);
end generate genPdiPcp;
genPcpPdiLink : if C_GEN_PDI generate
begin
--pdi_pcp assignments
clkPcp <= Bus2PDI_PCP_Clk;
Bus2PDI_PCP_Reset <= not Bus2PDI_PCP_Resetn;
pcp_writedata <= Bus2PDI_PCP_Data;
-- Bus2MAC_PKT_Data(7 downto 0) & Bus2MAC_PKT_Data(15 downto 8) &
-- Bus2MAC_PKT_Data(23 downto 16) & Bus2MAC_PKT_Data(31 downto 24);
pcp_read <= Bus2PDI_PCP_RNW;
pcp_write <= not Bus2PDI_PCP_RNW;
pcp_chipselect <= Bus2PDI_PCP_CS(0);
pcp_byteenable <= Bus2PDI_PCP_BE;
pcp_address <= Bus2PDI_PCP_Addr(14 downto 2);
PDI_PCP2Bus_Data <= pcp_readdata;
PDI_PCP2Bus_RdAck <= pcp_chipselect and pcp_read and not pcp_waitrequest;
PDI_PCP2Bus_WrAck <= pcp_chipselect and pcp_write and not pcp_waitrequest;
PDI_PCP2Bus_Error <= '0';
end generate genPcpPdiLink;
genPdiAp : if (C_GEN_AXI_BUS_IF) generate
begin
PDI_AP_AXI_SINGLE_SLAVE : axi_lite_ipif
generic map (
C_ARD_ADDR_RANGE_ARRAY => (C_PDI_AP_BASE,C_PDI_AP_HIGH),
C_ARD_NUM_CE_ARRAY => (0=>1),
C_DPHASE_TIMEOUT => C_S_AXI_PDI_AP_DPHASE_TIMEOUT,
C_FAMILY => C_FAMILY,
C_S_AXI_ADDR_WIDTH => C_S_AXI_PDI_AP_ADDR_WIDTH,
C_S_AXI_DATA_WIDTH => C_S_AXI_PDI_AP_DATA_WIDTH,
C_S_AXI_MIN_SIZE => C_PDI_AP_MINSIZE,
C_USE_WSTRB => C_S_AXI_PDI_AP_USE_WSTRB
)
port map(
Bus2IP_Addr => Bus2PDI_AP_Addr( C_S_AXI_PDI_AP_ADDR_WIDTH-1 downto 0 ),
Bus2IP_BE => Bus2PDI_AP_BE( (C_S_AXI_PDI_AP_DATA_WIDTH/8)-1 downto 0 ),
Bus2IP_CS => Bus2PDI_AP_CS( 0 downto 0 ),
Bus2IP_Clk => Bus2PDI_AP_Clk,
Bus2IP_Data => Bus2PDI_AP_Data( C_S_AXI_PDI_AP_DATA_WIDTH-1 downto 0 ),
Bus2IP_RNW => Bus2PDI_AP_RNW,
Bus2IP_RdCE => open,
Bus2IP_Resetn => Bus2PDI_AP_Resetn,
Bus2IP_WrCE => open,
IP2Bus_Data => PDI_AP2Bus_Data( C_S_AXI_PDI_AP_DATA_WIDTH-1 downto 0 ),
IP2Bus_Error => PDI_AP2Bus_Error,
IP2Bus_RdAck => PDI_AP2Bus_RdAck,
IP2Bus_WrAck => PDI_AP2Bus_WrAck,
S_AXI_ACLK => S_AXI_PDI_AP_ACLK,
S_AXI_ARADDR => S_AXI_PDI_AP_ARADDR( C_S_AXI_PDI_AP_ADDR_WIDTH-1 downto 0 ),
S_AXI_ARESETN => S_AXI_PDI_AP_ARESETN,
S_AXI_ARREADY => S_AXI_PDI_AP_ARREADY,
S_AXI_ARVALID => S_AXI_PDI_AP_ARVALID,
S_AXI_AWADDR => S_AXI_PDI_AP_AWADDR( C_S_AXI_PDI_AP_ADDR_WIDTH-1 downto 0 ),
S_AXI_AWREADY => S_AXI_PDI_AP_AWREADY,
S_AXI_AWVALID => S_AXI_PDI_AP_AWVALID,
S_AXI_BREADY => S_AXI_PDI_AP_BREADY,
S_AXI_BRESP => S_AXI_PDI_AP_BRESP,
S_AXI_BVALID => S_AXI_PDI_AP_BVALID,
S_AXI_RDATA => S_AXI_PDI_AP_RDATA( C_S_AXI_PDI_AP_DATA_WIDTH-1 downto 0 ),
S_AXI_RREADY => S_AXI_PDI_AP_RREADY,
S_AXI_RRESP => S_AXI_PDI_AP_RRESP,
S_AXI_RVALID => S_AXI_PDI_AP_RVALID,
S_AXI_WDATA => S_AXI_PDI_AP_WDATA( C_S_AXI_PDI_AP_DATA_WIDTH-1 downto 0 ),
S_AXI_WREADY => S_AXI_PDI_AP_WREADY,
S_AXI_WSTRB => S_AXI_PDI_AP_WSTRB( (C_S_AXI_PDI_AP_DATA_WIDTH/8)-1 downto 0 ),
S_AXI_WVALID => S_AXI_PDI_AP_WVALID
);
end generate genPdiAp;
genApPdiLink : if C_GEN_PDI generate
begin
--ap_pcp assignments
clkAp <= Bus2PDI_AP_Clk;
Bus2PDI_AP_Reset <= not Bus2PDI_AP_Resetn;
ap_writedata <= Bus2PDI_AP_Data;
-- Bus2MAC_PKT_Data(7 downto 0) & Bus2MAC_PKT_Data(15 downto 8) &
-- Bus2MAC_PKT_Data(23 downto 16) & Bus2MAC_PKT_Data(31 downto 24);
ap_read <= Bus2PDI_AP_RNW;
ap_write <= not Bus2PDI_AP_RNW;
ap_chipselect <= Bus2PDI_AP_CS(0);
ap_byteenable <= Bus2PDI_AP_BE;
ap_address <= Bus2PDI_AP_Addr(14 downto 2);
PDI_AP2Bus_Data <= ap_readdata;
PDI_AP2Bus_RdAck <= ap_chipselect and ap_read and not ap_waitrequest;
PDI_AP2Bus_WrAck <= ap_chipselect and ap_write and not ap_waitrequest;
PDI_AP2Bus_Error <= '0';
end generate genApPdiLink;
genSmpIo : if (C_GEN_SIMPLE_IO) generate
begin
SMP_IO_AXI_SINGLE_SLAVE : axi_lite_ipif
generic map (
C_ARD_ADDR_RANGE_ARRAY => (C_SMP_PCP_BASE,C_SMP_PCP_HIGH),
C_ARD_NUM_CE_ARRAY => (0=>1),
C_DPHASE_TIMEOUT => C_S_AXI_SMP_PCP_DPHASE_TIMEOUT,
C_FAMILY => C_FAMILY,
C_S_AXI_ADDR_WIDTH => C_S_AXI_SMP_PCP_ADDR_WIDTH,
C_S_AXI_DATA_WIDTH => C_S_AXI_SMP_PCP_DATA_WIDTH,
C_S_AXI_MIN_SIZE => C_SMP_PCP_MINSIZE,
C_USE_WSTRB => C_S_AXI_SMP_PCP_USE_WSTRB
)
port map(
Bus2IP_Addr => Bus2SMP_PCP_Addr( C_S_AXI_SMP_PCP_ADDR_WIDTH-1 downto 0 ),
Bus2IP_BE => Bus2SMP_PCP_BE( (C_S_AXI_SMP_PCP_DATA_WIDTH/8)-1 downto 0 ),
Bus2IP_CS => Bus2SMP_PCP_CS( 0 downto 0 ),
Bus2IP_Clk => Bus2SMP_PCP_Clk,
Bus2IP_Data => Bus2SMP_PCP_Data( C_S_AXI_SMP_PCP_DATA_WIDTH-1 downto 0 ),
Bus2IP_RNW => Bus2SMP_PCP_RNW,
Bus2IP_RdCE => open,
Bus2IP_Resetn => Bus2SMP_PCP_Resetn,
Bus2IP_WrCE => open,
IP2Bus_Data => SMP_PCP2Bus_Data( C_S_AXI_SMP_PCP_DATA_WIDTH-1 downto 0 ),
IP2Bus_Error => SMP_PCP2Bus_Error,
IP2Bus_RdAck => SMP_PCP2Bus_RdAck,
IP2Bus_WrAck => SMP_PCP2Bus_WrAck,
S_AXI_ACLK => S_AXI_SMP_PCP_ACLK,
S_AXI_ARADDR => S_AXI_SMP_PCP_ARADDR( C_S_AXI_SMP_PCP_ADDR_WIDTH-1 downto 0 ),
S_AXI_ARESETN => S_AXI_SMP_PCP_ARESETN,
S_AXI_ARREADY => S_AXI_SMP_PCP_ARREADY,
S_AXI_ARVALID => S_AXI_SMP_PCP_ARVALID,
S_AXI_AWADDR => S_AXI_SMP_PCP_AWADDR( C_S_AXI_SMP_PCP_ADDR_WIDTH-1 downto 0 ),
S_AXI_AWREADY => S_AXI_SMP_PCP_AWREADY,
S_AXI_AWVALID => S_AXI_SMP_PCP_AWVALID,
S_AXI_BREADY => S_AXI_SMP_PCP_BREADY,
S_AXI_BRESP => S_AXI_SMP_PCP_BRESP,
S_AXI_BVALID => S_AXI_SMP_PCP_BVALID,
S_AXI_RDATA => S_AXI_SMP_PCP_RDATA( C_S_AXI_SMP_PCP_DATA_WIDTH-1 downto 0 ),
S_AXI_RREADY => S_AXI_SMP_PCP_RREADY,
S_AXI_RRESP => S_AXI_SMP_PCP_RRESP,
S_AXI_RVALID => S_AXI_SMP_PCP_RVALID,
S_AXI_WDATA => S_AXI_SMP_PCP_WDATA( C_S_AXI_SMP_PCP_DATA_WIDTH-1 downto 0 ),
S_AXI_WREADY => S_AXI_SMP_PCP_WREADY,
S_AXI_WSTRB => S_AXI_SMP_PCP_WSTRB( (C_S_AXI_SMP_PCP_DATA_WIDTH/8)-1 downto 0 ),
S_AXI_WVALID => S_AXI_SMP_PCP_WVALID
);
end generate genSmpIo;
genSimpleIoSignals : if C_GEN_SIMPLE_IO generate
begin
--SMP_PCP assignments
clkPcp <= Bus2SMP_PCP_Clk;
Bus2SMP_PCP_Reset <= not Bus2SMP_PCP_Resetn;
smp_writedata <= Bus2SMP_PCP_Data;
smp_read <= Bus2SMP_PCP_RNW and Bus2SMP_PCP_CS(0);
smp_write <= not Bus2SMP_PCP_RNW and Bus2SMP_PCP_CS(0);
smp_chipselect <= Bus2SMP_PCP_CS(0);
smp_byteenable <= Bus2SMP_PCP_BE;
smp_address <= Bus2SMP_PCP_Addr(2);
SMP_PCP2Bus_Data <= smp_readdata;
SMP_PCP2Bus_RdAck <= smp_chipselect and smp_read and not smp_waitrequest;
SMP_PCP2Bus_WrAck <= smp_chipselect and smp_write and not smp_waitrequest;
SMP_PCP2Bus_Error <= '0';
end generate genSimpleIoSignals;
oddr2_0 : if not C_INSTANCE_ODDR2 generate
begin
phy0_clk <= clk50;
phy1_clk <= clk50;
end generate oddr2_0;
oddr2_1 : if C_INSTANCE_ODDR2 generate
begin
U10 : ODDR2
port map(
C0 => clk50,
C1 => NET38418,
CE => VCC,
D0 => VCC,
D1 => GND,
Q => phy0_clk,
R => GND,
S => GND
);
U11 : ODDR2
port map(
C0 => clk50,
C1 => NET38470,
CE => VCC,
D0 => VCC,
D1 => GND,
Q => phy1_clk,
R => GND,
S => GND
);
NET38470 <= not(clk50);
NET38418 <= not(clk50);
end generate oddr2_1;
end struct;
|
-------------------------------------------------------------------------------
--! @file axi_powerlink.vhd
--
--! @brief
--
-------------------------------------------------------------------------------
--
-- (c) B&R, 2012
--
-- Redistribution and use in source and binary forms, with or without
-- modification, are permitted provided that the following conditions
-- are met:
--
-- 1. Redistributions of source code must retain the above copyright
-- notice, this list of conditions and the following disclaimer.
--
-- 2. Redistributions in binary form must reproduce the above copyright
-- notice, this list of conditions and the following disclaimer in the
-- documentation and/or other materials provided with the distribution.
--
-- 3. Neither the name of B&R nor the names of its
-- contributors may be used to endorse or promote products derived
-- from this software without prior written permission. For written
-- permission, please contact [email protected]
--
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-- "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
-- FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-- COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-- INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-- BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-- LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-- CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-- LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
-- ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-- POSSIBILITY OF SUCH DAMAGE.
--
-------------------------------------------------------------------------------
--
-- This is the toplevel file for using the POWERLINK IP-Core
-- with Xilinx AXI.
--
-------------------------------------------------------------------------------
library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_arith.all;
use ieee.std_logic_unsigned.all;
use ieee.math_real.log2;
use ieee.math_real.ceil;
use work.global.all;
library proc_common_v3_00_a;
use proc_common_v3_00_a.proc_common_pkg.all;
use proc_common_v3_00_a.ipif_pkg.all;
library axi_lite_ipif_v1_01_a;
use axi_lite_ipif_v1_01_a.axi_lite_ipif;
library axi_master_burst_v1_00_a;
use axi_master_burst_v1_00_a.axi_master_burst;
-- standard libraries declarations
library UNISIM;
use UNISIM.vcomponents.all;
-- pragma synthesis_off
library IEEE;
use IEEE.vital_timing.all;
-- pragma synthesis_on
-- other libraries declarations
library AXI_LITE_IPIF_V1_01_A;
library AXI_MASTER_BURST_V1_00_A;
entity axi_powerlink is
generic(
C_FAMILY : string := "spartan6";
-- general
C_GEN_PDI : boolean := false;
C_GEN_PAR_IF : boolean := false;
C_GEN_SPI_IF : boolean := false;
C_GEN_AXI_BUS_IF : boolean := false;
C_GEN_SIMPLE_IO : boolean := false;
-- openMAC
C_MAC_PKT_SIZE : integer := 1024;
C_MAC_PKT_SIZE_LOG2 : integer := 10;
C_MAC_RX_BUFFERS : integer := 16;
C_USE_RMII : boolean := false;
C_TX_INT_PKT : boolean := false;
C_RX_INT_PKT : boolean := false;
C_USE_2ND_PHY : boolean := true;
C_NUM_SMI : integer range 1 to 2 := 2;
C_MAC_GEN_SECOND_TIMER : boolean := false;
--pdi
C_PDI_REV : integer := 0;
C_PCP_SYS_ID : integer := 0;
C_PDI_GEN_ASYNC_BUF_0 : boolean := true;
C_PDI_ASYNC_BUF_0 : integer := 50;
C_PDI_GEN_ASYNC_BUF_1 : boolean := true;
C_PDI_ASYNC_BUF_1 : integer := 50;
C_PDI_GEN_LED : boolean := false;
C_PDI_GEN_TIME_SYNC : boolean := true;
C_PDI_GEN_EVENT : boolean := true;
--global pdi and mac
C_NUM_RPDO : integer := 3;
C_RPDO_0_BUF_SIZE : integer := 100;
C_RPDO_1_BUF_SIZE : integer := 100;
C_RPDO_2_BUF_SIZE : integer := 100;
C_NUM_TPDO : integer := 1;
C_TPDO_BUF_SIZE : integer := 100;
-- pap
C_PAP_DATA_WIDTH : integer := 16;
--C_PAP_BIG_END : boolean := false;
C_PAP_LOW_ACT : boolean := false;
-- spi
C_SPI_CPOL : boolean := false;
C_SPI_CPHA : boolean := false;
--C_SPI_BIG_END : boolean := false;
-- simpleIO
C_PIO_VAL_LENGTH : integer := 50;
-- debug
C_OBSERVER_ENABLE : boolean := false;
-- clock stabiliser
C_INSTANCE_ODDR2 : boolean := false;
-- sync IRQ pulse width
C_USE_PULSE_2nd_CMP_TIMER : boolean := true;
C_PULSE_WIDTH_2nd_CMP_TIMER : integer := 9;
-- PDI AP AXI Slave
C_S_AXI_PDI_AP_BASEADDR : std_logic_vector := X"00000000";
C_S_AXI_PDI_AP_HIGHADDR : std_logic_vector := X"000FFFFF";
C_S_AXI_PDI_AP_DATA_WIDTH : integer := 32;
C_S_AXI_PDI_AP_ADDR_WIDTH : integer := 32;
C_S_AXI_PDI_AP_USE_WSTRB : integer := 1;
C_S_AXI_PDI_AP_DPHASE_TIMEOUT : integer := 8;
-- PDI AP AXI Slave
C_S_AXI_SMP_PCP_BASEADDR : std_logic_vector := X"00000000";
C_S_AXI_SMP_PCP_HIGHADDR : std_logic_vector := X"000FFFFF";
C_S_AXI_SMP_PCP_DATA_WIDTH : integer := 32;
C_S_AXI_SMP_PCP_ADDR_WIDTH : integer := 32;
C_S_AXI_SMP_PCP_USE_WSTRB : integer := 1;
C_S_AXI_SMP_PCP_DPHASE_TIMEOUT : integer := 8;
-- PDI PCP AXI Slave
C_S_AXI_PDI_PCP_BASEADDR : std_logic_vector := X"00000000";
C_S_AXI_PDI_PCP_HIGHADDR : std_logic_vector := X"000FFFFF";
C_S_AXI_PDI_PCP_DATA_WIDTH : integer := 32;
C_S_AXI_PDI_PCP_ADDR_WIDTH : integer := 32;
C_S_AXI_PDI_PCP_USE_WSTRB : integer := 1;
C_S_AXI_PDI_PCP_DPHASE_TIMEOUT : integer := 8;
-- openMAC DMA AXI Master
C_M_AXI_MAC_DMA_ADDR_WIDTH : INTEGER := 32;
C_M_AXI_MAC_DMA_DATA_WIDTH : INTEGER := 32;
C_M_AXI_MAC_DMA_NATIVE_DWIDTH : INTEGER := 32;
C_M_AXI_MAC_DMA_LENGTH_WIDTH : INTEGER := 12;
C_M_AXI_MAC_DMA_MAX_BURST_LEN : INTEGER := 16;
C_MAC_DMA_BURST_SIZE_RX : INTEGER := 8; --in bytes
C_MAC_DMA_BURST_SIZE_TX : INTEGER := 8; --in bytes
C_MAC_DMA_FIFO_SIZE_RX : INTEGER := 32; --in bytes
C_MAC_DMA_FIFO_SIZE_TX : INTEGER := 32; --in bytes
-- openMAC PKT AXI Slave
C_S_AXI_MAC_PKT_BASEADDR : std_logic_vector := X"00000000";
C_S_AXI_MAC_PKT_HIGHADDR : std_logic_vector := X"000FFFFF";
C_S_AXI_MAC_PKT_DATA_WIDTH : integer := 32;
C_S_AXI_MAC_PKT_ADDR_WIDTH : integer := 32;
C_S_AXI_MAC_PKT_USE_WSTRB : integer := 1;
C_S_AXI_MAC_PKT_DPHASE_TIMEOUT : integer := 8;
-- openMAC REG AXI Slave
--- MAC_REG
C_S_AXI_MAC_REG_RNG0_BASEADDR : std_logic_vector := X"00000000";
C_S_AXI_MAC_REG_RNG0_HIGHADDR : std_logic_vector := X"0000FFFF";
--- MAC_CMP
C_S_AXI_MAC_REG_RNG1_BASEADDR : std_logic_vector := X"00000000";
C_S_AXI_MAC_REG_RNG1_HIGHADDR : std_logic_vector := X"0000FFFF";
C_S_AXI_MAC_REG_DATA_WIDTH : integer := 32;
C_S_AXI_MAC_REG_ADDR_WIDTH : integer := 32;
C_S_AXI_MAC_REG_USE_WSTRB : integer := 1;
C_S_AXI_MAC_REG_DPHASE_TIMEOUT : integer := 8;
C_S_AXI_MAC_REG_ACLK_FREQ_HZ : integer := 20 --clock frequency in Hz
);
port(
M_AXI_MAC_DMA_aclk : in std_logic;
M_AXI_MAC_DMA_aresetn : in std_logic;
M_AXI_MAC_DMA_arready : in std_logic;
M_AXI_MAC_DMA_awready : in std_logic;
M_AXI_MAC_DMA_bvalid : in std_logic;
M_AXI_MAC_DMA_rlast : in std_logic;
M_AXI_MAC_DMA_rvalid : in std_logic;
M_AXI_MAC_DMA_wready : in std_logic;
S_AXI_MAC_PKT_ACLK : in std_logic;
S_AXI_MAC_PKT_ARESETN : in std_logic;
S_AXI_MAC_PKT_ARVALID : in std_logic;
S_AXI_MAC_PKT_AWVALID : in std_logic;
S_AXI_MAC_PKT_BREADY : in std_logic;
S_AXI_MAC_PKT_RREADY : in std_logic;
S_AXI_MAC_PKT_WVALID : in std_logic;
S_AXI_MAC_REG_ACLK : in std_logic;
S_AXI_MAC_REG_ARESETN : in std_logic;
S_AXI_MAC_REG_ARVALID : in std_logic;
S_AXI_MAC_REG_AWVALID : in std_logic;
S_AXI_MAC_REG_BREADY : in std_logic;
S_AXI_MAC_REG_RREADY : in std_logic;
S_AXI_MAC_REG_WVALID : in std_logic;
S_AXI_PDI_AP_ACLK : in std_logic;
S_AXI_PDI_AP_ARESETN : in std_logic;
S_AXI_PDI_AP_ARVALID : in std_logic;
S_AXI_PDI_AP_AWVALID : in std_logic;
S_AXI_PDI_AP_BREADY : in std_logic;
S_AXI_PDI_AP_RREADY : in std_logic;
S_AXI_PDI_AP_WVALID : in std_logic;
S_AXI_PDI_PCP_ACLK : in std_logic;
S_AXI_PDI_PCP_ARESETN : in std_logic;
S_AXI_PDI_PCP_ARVALID : in std_logic;
S_AXI_PDI_PCP_AWVALID : in std_logic;
S_AXI_PDI_PCP_BREADY : in std_logic;
S_AXI_PDI_PCP_RREADY : in std_logic;
S_AXI_PDI_PCP_WVALID : in std_logic;
S_AXI_SMP_PCP_ACLK : in std_logic;
S_AXI_SMP_PCP_ARESETN : in std_logic;
S_AXI_SMP_PCP_ARVALID : in std_logic;
S_AXI_SMP_PCP_AWVALID : in std_logic;
S_AXI_SMP_PCP_BREADY : in std_logic;
S_AXI_SMP_PCP_RREADY : in std_logic;
S_AXI_SMP_PCP_WVALID : in std_logic;
clk100 : in std_logic;
clk50 : in std_logic;
pap_cs : in std_logic;
pap_cs_n : in std_logic;
pap_rd : in std_logic;
pap_rd_n : in std_logic;
pap_wr : in std_logic;
pap_wr_n : in std_logic;
phy0_RxDv : in std_logic;
phy0_RxErr : in std_logic;
phy0_SMIDat_I : in std_logic;
phy0_link : in std_logic;
phy1_RxDv : in std_logic;
phy1_RxErr : in std_logic;
phy1_SMIDat_I : in std_logic;
phy1_link : in std_logic;
phyMii0_RxClk : in std_logic;
phyMii0_RxDv : in std_logic;
phyMii0_RxEr : in std_logic;
phyMii0_TxClk : in std_logic;
phyMii1_RxClk : in std_logic;
phyMii1_RxDv : in std_logic;
phyMii1_RxEr : in std_logic;
phyMii1_TxClk : in std_logic;
phy_SMIDat_I : in std_logic;
spi_clk : in std_logic;
spi_mosi : in std_logic;
spi_sel_n : in std_logic;
M_AXI_MAC_DMA_bresp : in std_logic_vector(1 downto 0);
M_AXI_MAC_DMA_rdata : in std_logic_vector(C_M_AXI_MAC_DMA_DATA_WIDTH-1 downto 0);
M_AXI_MAC_DMA_rresp : in std_logic_vector(1 downto 0);
S_AXI_MAC_PKT_ARADDR : in std_logic_vector(C_S_AXI_MAC_PKT_ADDR_WIDTH-1 downto 0);
S_AXI_MAC_PKT_AWADDR : in std_logic_vector(C_S_AXI_MAC_PKT_ADDR_WIDTH-1 downto 0);
S_AXI_MAC_PKT_WDATA : in std_logic_vector(C_S_AXI_MAC_PKT_DATA_WIDTH-1 downto 0);
S_AXI_MAC_PKT_WSTRB : in std_logic_vector((C_S_AXI_MAC_PKT_DATA_WIDTH/8)-1 downto 0);
S_AXI_MAC_REG_ARADDR : in std_logic_vector(C_S_AXI_MAC_REG_ADDR_WIDTH-1 downto 0);
S_AXI_MAC_REG_AWADDR : in std_logic_vector(C_S_AXI_MAC_REG_ADDR_WIDTH-1 downto 0);
S_AXI_MAC_REG_WDATA : in std_logic_vector(C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0);
S_AXI_MAC_REG_WSTRB : in std_logic_vector((C_S_AXI_MAC_REG_DATA_WIDTH/8)-1 downto 0);
S_AXI_PDI_AP_ARADDR : in std_logic_vector(C_S_AXI_PDI_AP_ADDR_WIDTH-1 downto 0);
S_AXI_PDI_AP_AWADDR : in std_logic_vector(C_S_AXI_PDI_AP_ADDR_WIDTH-1 downto 0);
S_AXI_PDI_AP_WDATA : in std_logic_vector(C_S_AXI_PDI_AP_DATA_WIDTH-1 downto 0);
S_AXI_PDI_AP_WSTRB : in std_logic_vector((C_S_AXI_PDI_AP_DATA_WIDTH/8)-1 downto 0);
S_AXI_PDI_PCP_ARADDR : in std_logic_vector(C_S_AXI_PDI_PCP_ADDR_WIDTH-1 downto 0);
S_AXI_PDI_PCP_AWADDR : in std_logic_vector(C_S_AXI_PDI_PCP_ADDR_WIDTH-1 downto 0);
S_AXI_PDI_PCP_WDATA : in std_logic_vector(C_S_AXI_PDI_PCP_DATA_WIDTH-1 downto 0);
S_AXI_PDI_PCP_WSTRB : in std_logic_vector((C_S_AXI_PDI_PCP_DATA_WIDTH/8)-1 downto 0);
S_AXI_SMP_PCP_ARADDR : in std_logic_vector(C_S_AXI_SMP_PCP_ADDR_WIDTH-1 downto 0);
S_AXI_SMP_PCP_AWADDR : in std_logic_vector(C_S_AXI_SMP_PCP_ADDR_WIDTH-1 downto 0);
S_AXI_SMP_PCP_WDATA : in std_logic_vector(C_S_AXI_SMP_PCP_DATA_WIDTH-1 downto 0);
S_AXI_SMP_PCP_WSTRB : in std_logic_vector((C_S_AXI_SMP_PCP_DATA_WIDTH/8)-1 downto 0);
pap_addr : in std_logic_vector(15 downto 0);
pap_be : in std_logic_vector(C_PAP_DATA_WIDTH/8-1 downto 0);
pap_be_n : in std_logic_vector(C_PAP_DATA_WIDTH/8-1 downto 0);
pap_data_I : in std_logic_vector(C_PAP_DATA_WIDTH-1 downto 0);
pap_gpio_I : in std_logic_vector(1 downto 0);
phy0_RxDat : in std_logic_vector(1 downto 0);
phy1_RxDat : in std_logic_vector(1 downto 0);
phyMii0_RxDat : in std_logic_vector(3 downto 0);
phyMii1_RxDat : in std_logic_vector(3 downto 0);
pio_pconfig : in std_logic_vector(3 downto 0);
pio_portInLatch : in std_logic_vector(3 downto 0);
pio_portio_I : in std_logic_vector(31 downto 0);
M_AXI_MAC_DMA_arvalid : out std_logic;
M_AXI_MAC_DMA_awvalid : out std_logic;
M_AXI_MAC_DMA_bready : out std_logic;
M_AXI_MAC_DMA_md_error : out std_logic;
M_AXI_MAC_DMA_rready : out std_logic;
M_AXI_MAC_DMA_wlast : out std_logic;
M_AXI_MAC_DMA_wvalid : out std_logic;
S_AXI_MAC_PKT_ARREADY : out std_logic;
S_AXI_MAC_PKT_AWREADY : out std_logic;
S_AXI_MAC_PKT_BVALID : out std_logic;
S_AXI_MAC_PKT_RVALID : out std_logic;
S_AXI_MAC_PKT_WREADY : out std_logic;
S_AXI_MAC_REG_ARREADY : out std_logic;
S_AXI_MAC_REG_AWREADY : out std_logic;
S_AXI_MAC_REG_BVALID : out std_logic;
S_AXI_MAC_REG_RVALID : out std_logic;
S_AXI_MAC_REG_WREADY : out std_logic;
S_AXI_PDI_AP_ARREADY : out std_logic;
S_AXI_PDI_AP_AWREADY : out std_logic;
S_AXI_PDI_AP_BVALID : out std_logic;
S_AXI_PDI_AP_RVALID : out std_logic;
S_AXI_PDI_AP_WREADY : out std_logic;
S_AXI_PDI_PCP_ARREADY : out std_logic;
S_AXI_PDI_PCP_AWREADY : out std_logic;
S_AXI_PDI_PCP_BVALID : out std_logic;
S_AXI_PDI_PCP_RVALID : out std_logic;
S_AXI_PDI_PCP_WREADY : out std_logic;
S_AXI_SMP_PCP_ARREADY : out std_logic;
S_AXI_SMP_PCP_AWREADY : out std_logic;
S_AXI_SMP_PCP_BVALID : out std_logic;
S_AXI_SMP_PCP_RVALID : out std_logic;
S_AXI_SMP_PCP_WREADY : out std_logic;
ap_asyncIrq : out std_logic;
ap_asyncIrq_n : out std_logic;
ap_syncIrq : out std_logic;
ap_syncIrq_n : out std_logic;
led_error : out std_logic;
led_status : out std_logic;
mac_irq : out std_logic;
pap_ack : out std_logic;
pap_ack_n : out std_logic;
pap_data_T : out std_logic;
phy0_Rst_n : out std_logic;
phy0_SMIClk : out std_logic;
phy0_SMIDat_O : out std_logic;
phy0_SMIDat_T : out std_logic;
phy0_TxEn : out std_logic;
phy0_clk : out std_logic;
phy1_Rst_n : out std_logic;
phy1_SMIClk : out std_logic;
phy1_SMIDat_O : out std_logic;
phy1_SMIDat_T : out std_logic;
phy1_TxEn : out std_logic;
phy1_clk : out std_logic;
phyMii0_TxEn : out std_logic;
phyMii0_TxEr : out std_logic;
phyMii1_TxEn : out std_logic;
phyMii1_TxEr : out std_logic;
phy_Rst_n : out std_logic;
phy_SMIClk : out std_logic;
phy_SMIDat_O : out std_logic;
phy_SMIDat_T : out std_logic;
pio_operational : out std_logic;
spi_miso : out std_logic;
tcp_irq : out std_logic;
M_AXI_MAC_DMA_araddr : out std_logic_vector(C_M_AXI_MAC_DMA_ADDR_WIDTH-1 downto 0);
M_AXI_MAC_DMA_arburst : out std_logic_vector(1 downto 0);
M_AXI_MAC_DMA_arcache : out std_logic_vector(3 downto 0);
M_AXI_MAC_DMA_arlen : out std_logic_vector(7 downto 0);
M_AXI_MAC_DMA_arprot : out std_logic_vector(2 downto 0);
M_AXI_MAC_DMA_arsize : out std_logic_vector(2 downto 0);
M_AXI_MAC_DMA_awaddr : out std_logic_vector(C_M_AXI_MAC_DMA_ADDR_WIDTH-1 downto 0);
M_AXI_MAC_DMA_awburst : out std_logic_vector(1 downto 0);
M_AXI_MAC_DMA_awcache : out std_logic_vector(3 downto 0);
M_AXI_MAC_DMA_awlen : out std_logic_vector(7 downto 0);
M_AXI_MAC_DMA_awprot : out std_logic_vector(2 downto 0);
M_AXI_MAC_DMA_awsize : out std_logic_vector(2 downto 0);
M_AXI_MAC_DMA_wdata : out std_logic_vector(C_M_AXI_MAC_DMA_DATA_WIDTH-1 downto 0);
M_AXI_MAC_DMA_wstrb : out std_logic_vector((C_M_AXI_MAC_DMA_DATA_WIDTH/8)-1 downto 0);
S_AXI_MAC_PKT_BRESP : out std_logic_vector(1 downto 0);
S_AXI_MAC_PKT_RDATA : out std_logic_vector(C_S_AXI_MAC_PKT_DATA_WIDTH-1 downto 0);
S_AXI_MAC_PKT_RRESP : out std_logic_vector(1 downto 0);
S_AXI_MAC_REG_BRESP : out std_logic_vector(1 downto 0);
S_AXI_MAC_REG_RDATA : out std_logic_vector(C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0);
S_AXI_MAC_REG_RRESP : out std_logic_vector(1 downto 0);
S_AXI_PDI_AP_BRESP : out std_logic_vector(1 downto 0);
S_AXI_PDI_AP_RDATA : out std_logic_vector(C_S_AXI_PDI_AP_DATA_WIDTH-1 downto 0);
S_AXI_PDI_AP_RRESP : out std_logic_vector(1 downto 0);
S_AXI_PDI_PCP_BRESP : out std_logic_vector(1 downto 0);
S_AXI_PDI_PCP_RDATA : out std_logic_vector(C_S_AXI_PDI_PCP_DATA_WIDTH-1 downto 0);
S_AXI_PDI_PCP_RRESP : out std_logic_vector(1 downto 0);
S_AXI_SMP_PCP_BRESP : out std_logic_vector(1 downto 0);
S_AXI_SMP_PCP_RDATA : out std_logic_vector(C_S_AXI_SMP_PCP_DATA_WIDTH-1 downto 0);
S_AXI_SMP_PCP_RRESP : out std_logic_vector(1 downto 0);
led_gpo : out std_logic_vector(7 downto 0);
led_opt : out std_logic_vector(1 downto 0);
led_phyAct : out std_logic_vector(1 downto 0);
led_phyLink : out std_logic_vector(1 downto 0);
pap_data_O : out std_logic_vector(C_PAP_DATA_WIDTH-1 downto 0);
pap_gpio_O : out std_logic_vector(1 downto 0);
pap_gpio_T : out std_logic_vector(1 downto 0);
phy0_TxDat : out std_logic_vector(1 downto 0);
phy1_TxDat : out std_logic_vector(1 downto 0);
phyMii0_TxDat : out std_logic_vector(3 downto 0);
phyMii1_TxDat : out std_logic_vector(3 downto 0);
pio_portOutValid : out std_logic_vector(3 downto 0);
pio_portio_O : out std_logic_vector(31 downto 0);
pio_portio_T : out std_logic_vector(31 downto 0);
test_port : out std_logic_vector(255 downto 0) := (others => '0')
);
-- Entity declarations --
-- Click here to add additional declarations --
attribute SIGIS : string;
-- Entity attributes --
attribute SIGIS of M_AXI_MAC_DMA_aclk : signal is "Clk";
attribute SIGIS of M_AXI_MAC_DMA_aresetn : signal is "Rst";
attribute SIGIS of S_AXI_MAC_PKT_ACLK : signal is "Clk";
attribute SIGIS of S_AXI_MAC_PKT_ARESETN : signal is "Rst";
attribute SIGIS of S_AXI_MAC_REG_ACLK : signal is "Clk";
attribute SIGIS of S_AXI_MAC_REG_ARESETN : signal is "Rst";
attribute SIGIS of S_AXI_PDI_AP_ACLK : signal is "Clk";
attribute SIGIS of S_AXI_PDI_AP_ARESETN : signal is "Rst";
attribute SIGIS of S_AXI_PDI_PCP_ACLK : signal is "Clk";
attribute SIGIS of S_AXI_PDI_PCP_ARESETN : signal is "Rst";
attribute SIGIS of S_AXI_SMP_PCP_ACLK : signal is "Clk";
attribute SIGIS of S_AXI_SMP_PCP_ARESETN : signal is "Rst";
attribute SIGIS of clk100 : signal is "Clk";
attribute SIGIS of phy0_clk : signal is "Clk";
attribute SIGIS of phy1_clk : signal is "Clk";
end axi_powerlink;
architecture struct of axi_powerlink is
---- Architecture declarations -----
function get_max( a, b : integer) return integer is
begin
if a < b then
return b;
else
return a;
end if;
end get_max;
---- Component declarations -----
component clkXing
generic(
gCsNum : natural := 2;
gDataWidth : natural := 32
);
port (
iArst : in std_logic;
iFastClk : in std_logic;
iFastCs : in std_logic_vector(gCsNum-1 downto 0);
iFastRNW : in std_logic;
iSlowClk : in std_logic;
iSlowRdAck : in std_logic;
iSlowReaddata : in std_logic_vector(gDataWidth-1 downto 0);
iSlowWrAck : in std_logic;
oFastRdAck : out std_logic;
oFastReaddata : out std_logic_vector(gDataWidth-1 downto 0);
oFastWrAck : out std_logic;
oSlowCs : out std_logic_vector(gCsNum-1 downto 0);
oSlowRNW : out std_logic
);
end component;
component ipif_master_handler
generic(
C_MAC_DMA_IPIF_AWIDTH : integer := 32;
C_MAC_DMA_IPIF_NATIVE_DWIDTH : integer := 32;
dma_highadr_g : integer := 31;
gen_rx_fifo_g : boolean := true;
gen_tx_fifo_g : boolean := true;
m_burstcount_width_g : integer := 4
);
port (
Bus2MAC_DMA_MstRd_d : in std_logic_vector(C_MAC_DMA_IPIF_NATIVE_DWIDTH-1 downto 0);
Bus2MAC_DMA_MstRd_eof_n : in std_logic := '1';
Bus2MAC_DMA_MstRd_rem : in std_logic_vector(C_MAC_DMA_IPIF_NATIVE_DWIDTH/8-1 downto 0);
Bus2MAC_DMA_MstRd_sof_n : in std_logic := '1';
Bus2MAC_DMA_MstRd_src_dsc_n : in std_logic := '1';
Bus2MAC_DMA_MstRd_src_rdy_n : in std_logic := '1';
Bus2MAC_DMA_MstWr_dst_dsc_n : in std_logic := '1';
Bus2MAC_DMA_MstWr_dst_rdy_n : in std_logic := '1';
Bus2MAC_DMA_Mst_CmdAck : in std_logic := '0';
Bus2MAC_DMA_Mst_Cmd_Timeout : in std_logic := '0';
Bus2MAC_DMA_Mst_Cmplt : in std_logic := '0';
Bus2MAC_DMA_Mst_Error : in std_logic := '0';
Bus2MAC_DMA_Mst_Rearbitrate : in std_logic := '0';
MAC_DMA_CLK : in std_logic;
MAC_DMA_Rst : in std_logic;
m_address : in std_logic_vector(dma_highadr_g downto 0);
m_burstcount : in std_logic_vector(m_burstcount_width_g-1 downto 0);
m_burstcounter : in std_logic_vector(m_burstcount_width_g-1 downto 0);
m_byteenable : in std_logic_vector(3 downto 0);
m_read : in std_logic := '0';
m_write : in std_logic := '0';
m_writedata : in std_logic_vector(31 downto 0);
MAC_DMA2Bus_MstRd_Req : out std_logic := '0';
MAC_DMA2Bus_MstRd_dst_dsc_n : out std_logic := '1';
MAC_DMA2Bus_MstRd_dst_rdy_n : out std_logic := '1';
MAC_DMA2Bus_MstWr_Req : out std_logic := '0';
MAC_DMA2Bus_MstWr_d : out std_logic_vector(C_MAC_DMA_IPIF_NATIVE_DWIDTH-1 downto 0);
MAC_DMA2Bus_MstWr_eof_n : out std_logic := '1';
MAC_DMA2Bus_MstWr_rem : out std_logic_vector(C_MAC_DMA_IPIF_NATIVE_DWIDTH/8-1 downto 0);
MAC_DMA2Bus_MstWr_sof_n : out std_logic := '1';
MAC_DMA2Bus_MstWr_src_dsc_n : out std_logic := '1';
MAC_DMA2Bus_MstWr_src_rdy_n : out std_logic := '1';
MAC_DMA2Bus_Mst_Addr : out std_logic_vector(C_MAC_DMA_IPIF_AWIDTH-1 downto 0);
MAC_DMA2Bus_Mst_BE : out std_logic_vector(C_MAC_DMA_IPIF_NATIVE_DWIDTH/8-1 downto 0);
MAC_DMA2Bus_Mst_Length : out std_logic_vector(11 downto 0);
MAC_DMA2Bus_Mst_Lock : out std_logic := '0';
MAC_DMA2Bus_Mst_Reset : out std_logic := '0';
MAC_DMA2Bus_Mst_Type : out std_logic := '0';
m_clk : out std_logic;
m_readdata : out std_logic_vector(31 downto 0);
m_readdatavalid : out std_logic := '0';
m_waitrequest : out std_logic := '1'
);
end component;
component openMAC_16to32conv
generic(
bus_address_width : integer := 10;
gEndian : string := "little"
);
port (
bus_address : in std_logic_vector(bus_address_width-1 downto 0);
bus_byteenable : in std_logic_vector(3 downto 0);
bus_read : in std_logic;
bus_select : in std_logic;
bus_write : in std_logic;
bus_writedata : in std_logic_vector(31 downto 0);
clk : in std_logic;
rst : in std_logic;
s_readdata : in std_logic_vector(15 downto 0);
s_waitrequest : in std_logic;
bus_ack_rd : out std_logic;
bus_ack_wr : out std_logic;
bus_readdata : out std_logic_vector(31 downto 0);
s_address : out std_logic_vector(bus_address_width-1 downto 0);
s_byteenable : out std_logic_vector(1 downto 0);
s_chipselect : out std_logic;
s_read : out std_logic;
s_write : out std_logic;
s_writedata : out std_logic_vector(15 downto 0)
);
end component;
component powerlink
generic(
Simulate : integer := 0;
endian_g : string := "little";
gNumSmi : integer range 1 to 2 := 2;
genABuf1_g : integer := 1;
genABuf2_g : integer := 1;
genEvent_g : integer := 0;
genInternalAp_g : integer := 1;
genIoBuf_g : integer := 1;
genLedGadget_g : integer := 0;
genOnePdiClkDomain_g : integer := 0;
genPdi_g : integer := 1;
genSimpleIO_g : integer := 0;
genSmiIO : integer := 1;
genSpiAp_g : integer := 0;
genTimeSync_g : integer := 0;
gen_dma_observer_g : integer := 1;
iAsyBuf1Size_g : integer := 100;
iAsyBuf2Size_g : integer := 100;
iBufSizeLOG2_g : integer := 10;
iBufSize_g : integer := 1024;
iPdiRev_g : integer := 21930;
iRpdo0BufSize_g : integer := 100;
iRpdo1BufSize_g : integer := 100;
iRpdo2BufSize_g : integer := 100;
iRpdos_g : integer := 3;
iTpdoBufSize_g : integer := 100;
iTpdos_g : integer := 1;
m_burstcount_const_g : integer := 1;
m_burstcount_width_g : integer := 4;
m_data_width_g : integer := 16;
m_rx_burst_size_g : integer := 16;
m_rx_fifo_size_g : integer := 16;
m_tx_burst_size_g : integer := 16;
m_tx_fifo_size_g : integer := 16;
papBigEnd_g : integer := 0;
papDataWidth_g : integer := 8;
papLowAct_g : integer := 0;
pcpSysId : integer := 1;
pioValLen_g : integer := 50;
spiBigEnd_g : integer := 0;
spiCPHA_g : integer := 0;
spiCPOL_g : integer := 0;
use2ndCmpTimer_g : integer := 1;
usePulse2ndCmpTimer_g : integer := 1;
pulseWidth2ndCmpTimer_g : integer := 9;
use2ndPhy_g : integer := 1;
useIntPacketBuf_g : integer := 1;
useRmii_g : integer := 1;
useRxIntPacketBuf_g : integer := 1
);
port (
ap_address : in std_logic_vector(12 downto 0);
ap_byteenable : in std_logic_vector(3 downto 0);
ap_chipselect : in std_logic;
ap_read : in std_logic;
ap_write : in std_logic;
ap_writedata : in std_logic_vector(31 downto 0);
clk50 : in std_logic;
clkAp : in std_logic;
clkEth : in std_logic;
clkPcp : in std_logic;
m_clk : in std_logic;
m_readdata : in std_logic_vector(m_data_width_g-1 downto 0) := (others => '0');
m_readdatavalid : in std_logic := '0';
m_waitrequest : in std_logic;
mac_address : in std_logic_vector(11 downto 0);
mac_byteenable : in std_logic_vector(1 downto 0);
mac_chipselect : in std_logic;
mac_read : in std_logic;
mac_write : in std_logic;
mac_writedata : in std_logic_vector(15 downto 0);
mbf_address : in std_logic_vector(ibufsizelog2_g-3 downto 0);
mbf_byteenable : in std_logic_vector(3 downto 0);
mbf_chipselect : in std_logic;
mbf_read : in std_logic;
mbf_write : in std_logic;
mbf_writedata : in std_logic_vector(31 downto 0);
pap_addr : in std_logic_vector(15 downto 0);
pap_be : in std_logic_vector(papDataWidth_g/8-1 downto 0);
pap_be_n : in std_logic_vector(papDataWidth_g/8-1 downto 0);
pap_cs : in std_logic;
pap_cs_n : in std_logic;
pap_data_I : in std_logic_vector(papDataWidth_g-1 downto 0) := (others => '0');
pap_gpio_I : in std_logic_vector(1 downto 0) := (others => '0');
pap_rd : in std_logic;
pap_rd_n : in std_logic;
pap_wr : in std_logic;
pap_wr_n : in std_logic;
pcp_address : in std_logic_vector(12 downto 0);
pcp_byteenable : in std_logic_vector(3 downto 0);
pcp_chipselect : in std_logic;
pcp_read : in std_logic;
pcp_write : in std_logic;
pcp_writedata : in std_logic_vector(31 downto 0);
phy0_RxDat : in std_logic_vector(1 downto 0);
phy0_RxDv : in std_logic;
phy0_RxErr : in std_logic;
phy0_SMIDat_I : in std_logic := '1';
phy0_link : in std_logic := '0';
phy1_RxDat : in std_logic_vector(1 downto 0) := (others => '0');
phy1_RxDv : in std_logic;
phy1_RxErr : in std_logic;
phy1_SMIDat_I : in std_logic := '1';
phy1_link : in std_logic := '0';
phyMii0_RxClk : in std_logic;
phyMii0_RxDat : in std_logic_vector(3 downto 0) := (others => '0');
phyMii0_RxDv : in std_logic;
phyMii0_RxEr : in std_logic;
phyMii0_TxClk : in std_logic;
phyMii1_RxClk : in std_logic;
phyMii1_RxDat : in std_logic_vector(3 downto 0) := (others => '0');
phyMii1_RxDv : in std_logic;
phyMii1_RxEr : in std_logic;
phyMii1_TxClk : in std_logic;
phy_SMIDat_I : in std_logic := '1';
pio_pconfig : in std_logic_vector(3 downto 0);
pio_portInLatch : in std_logic_vector(3 downto 0);
pio_portio_I : in std_logic_vector(31 downto 0) := (others => '0');
pkt_clk : in std_logic;
rst : in std_logic;
rstAp : in std_logic;
rstPcp : in std_logic;
smp_address : in std_logic;
smp_byteenable : in std_logic_vector(3 downto 0);
smp_read : in std_logic;
smp_write : in std_logic;
smp_writedata : in std_logic_vector(31 downto 0);
spi_clk : in std_logic;
spi_mosi : in std_logic;
spi_sel_n : in std_logic;
tcp_address : in std_logic_vector(1 downto 0);
tcp_byteenable : in std_logic_vector(3 downto 0);
tcp_chipselect : in std_logic;
tcp_read : in std_logic;
tcp_write : in std_logic;
tcp_writedata : in std_logic_vector(31 downto 0);
ap_asyncIrq : out std_logic := '0';
ap_asyncIrq_n : out std_logic := '1';
ap_irq : out std_logic := '0';
ap_irq_n : out std_logic := '1';
ap_readdata : out std_logic_vector(31 downto 0) := (others => '0');
ap_syncIrq : out std_logic := '0';
ap_syncIrq_n : out std_logic := '1';
ap_waitrequest : out std_logic;
led_error : out std_logic := '0';
led_gpo : out std_logic_vector(7 downto 0) := (others => '0');
led_opt : out std_logic_vector(1 downto 0) := (others => '0');
led_phyAct : out std_logic_vector(1 downto 0) := (others => '0');
led_phyLink : out std_logic_vector(1 downto 0) := (others => '0');
led_status : out std_logic := '0';
m_address : out std_logic_vector(31 downto 0) := (others => '0');
m_burstcount : out std_logic_vector(m_burstcount_width_g-1 downto 0);
m_burstcounter : out std_logic_vector(m_burstcount_width_g-1 downto 0);
m_byteenable : out std_logic_vector(m_data_width_g/8-1 downto 0) := (others => '0');
m_read : out std_logic := '0';
m_write : out std_logic := '0';
m_writedata : out std_logic_vector(m_data_width_g-1 downto 0) := (others => '0');
mac_irq : out std_logic := '0';
mac_readdata : out std_logic_vector(15 downto 0) := (others => '0');
mac_waitrequest : out std_logic;
mbf_readdata : out std_logic_vector(31 downto 0) := (others => '0');
mbf_waitrequest : out std_logic;
pap_ack : out std_logic := '0';
pap_ack_n : out std_logic := '1';
pap_data_O : out std_logic_vector(papDataWidth_g-1 downto 0);
pap_data_T : out std_logic;
pap_gpio_O : out std_logic_vector(1 downto 0);
pap_gpio_T : out std_logic_vector(1 downto 0);
pcp_readdata : out std_logic_vector(31 downto 0) := (others => '0');
pcp_waitrequest : out std_logic;
phy0_Rst_n : out std_logic := '1';
phy0_SMIClk : out std_logic := '0';
phy0_SMIDat_O : out std_logic;
phy0_SMIDat_T : out std_logic;
phy0_TxDat : out std_logic_vector(1 downto 0) := (others => '0');
phy0_TxEn : out std_logic := '0';
phy1_Rst_n : out std_logic := '1';
phy1_SMIClk : out std_logic := '0';
phy1_SMIDat_O : out std_logic;
phy1_SMIDat_T : out std_logic;
phy1_TxDat : out std_logic_vector(1 downto 0) := (others => '0');
phy1_TxEn : out std_logic := '0';
phyMii0_TxDat : out std_logic_vector(3 downto 0) := (others => '0');
phyMii0_TxEn : out std_logic := '0';
phyMii0_TxEr : out std_logic := '0';
phyMii1_TxDat : out std_logic_vector(3 downto 0) := (others => '0');
phyMii1_TxEn : out std_logic := '0';
phyMii1_TxEr : out std_logic := '0';
phy_Rst_n : out std_logic := '1';
phy_SMIClk : out std_logic := '0';
phy_SMIDat_O : out std_logic;
phy_SMIDat_T : out std_logic;
pio_operational : out std_logic := '0';
pio_portOutValid : out std_logic_vector(3 downto 0) := (others => '0');
pio_portio_O : out std_logic_vector(31 downto 0);
pio_portio_T : out std_logic_vector(31 downto 0);
smp_readdata : out std_logic_vector(31 downto 0) := (others => '0');
smp_waitrequest : out std_logic;
spi_miso : out std_logic := '0';
tcp_irq : out std_logic := '0';
tcp_readdata : out std_logic_vector(31 downto 0) := (others => '0');
tcp_waitrequest : out std_logic;
pap_data : inout std_logic_vector(papDataWidth_g-1 downto 0) := (others => '0');
pap_gpio : inout std_logic_vector(1 downto 0) := (others => '0');
phy0_SMIDat : inout std_logic := '1';
phy1_SMIDat : inout std_logic := '1';
phy_SMIDat : inout std_logic := '1';
pio_portio : inout std_logic_vector(31 downto 0) := (others => '0')
);
end component;
component axi_lite_ipif
generic(
C_ARD_ADDR_RANGE_ARRAY : slv64_array_type := (X"0000_0000_7000_0000",X"0000_0000_7000_00FF",X"0000_0000_7000_0100",X"0000_0000_7000_01FF");
C_ARD_NUM_CE_ARRAY : integer_array_type := (4,12);
C_DPHASE_TIMEOUT : integer range 0 to 512 := 8;
C_FAMILY : string := "virtex6";
C_S_AXI_ADDR_WIDTH : integer := 32;
C_S_AXI_DATA_WIDTH : integer range 32 to 32 := 32;
C_S_AXI_MIN_SIZE : std_logic_vector(31 downto 0) := X"000001FF";
C_USE_WSTRB : integer := 0
);
port (
IP2Bus_Data : in std_logic_vector(C_S_AXI_DATA_WIDTH-1 downto 0);
IP2Bus_Error : in std_logic;
IP2Bus_RdAck : in std_logic;
IP2Bus_WrAck : in std_logic;
S_AXI_ACLK : in std_logic;
S_AXI_ARADDR : in std_logic_vector(C_S_AXI_ADDR_WIDTH-1 downto 0);
S_AXI_ARESETN : in std_logic;
S_AXI_ARVALID : in std_logic;
S_AXI_AWADDR : in std_logic_vector(C_S_AXI_ADDR_WIDTH-1 downto 0);
S_AXI_AWVALID : in std_logic;
S_AXI_BREADY : in std_logic;
S_AXI_RREADY : in std_logic;
S_AXI_WDATA : in std_logic_vector(C_S_AXI_DATA_WIDTH-1 downto 0);
S_AXI_WSTRB : in std_logic_vector((C_S_AXI_DATA_WIDTH/8)-1 downto 0);
S_AXI_WVALID : in std_logic;
Bus2IP_Addr : out std_logic_vector(C_S_AXI_ADDR_WIDTH-1 downto 0);
Bus2IP_BE : out std_logic_vector((C_S_AXI_DATA_WIDTH/8)-1 downto 0);
Bus2IP_CS : out std_logic_vector((C_ARD_ADDR_RANGE_ARRAY'LENGTH)/2-1 downto 0);
Bus2IP_Clk : out std_logic;
Bus2IP_Data : out std_logic_vector(C_S_AXI_DATA_WIDTH-1 downto 0);
Bus2IP_RNW : out std_logic;
Bus2IP_RdCE : out std_logic_vector(calc_num_ce(C_ARD_NUM_CE_ARRAY)-1 downto 0);
Bus2IP_Resetn : out std_logic;
Bus2IP_WrCE : out std_logic_vector(calc_num_ce(C_ARD_NUM_CE_ARRAY)-1 downto 0);
S_AXI_ARREADY : out std_logic;
S_AXI_AWREADY : out std_logic;
S_AXI_BRESP : out std_logic_vector(1 downto 0);
S_AXI_BVALID : out std_logic;
S_AXI_RDATA : out std_logic_vector(C_S_AXI_DATA_WIDTH-1 downto 0);
S_AXI_RRESP : out std_logic_vector(1 downto 0);
S_AXI_RVALID : out std_logic;
S_AXI_WREADY : out std_logic
);
end component;
component axi_master_burst
generic(
C_ADDR_PIPE_DEPTH : integer range 1 to 14 := 1;
C_FAMILY : string := "virtex6";
C_LENGTH_WIDTH : integer range 12 to 20 := 12;
C_MAX_BURST_LEN : integer range 16 to 256 := 16;
C_M_AXI_ADDR_WIDTH : integer range 32 to 32 := 32;
C_M_AXI_DATA_WIDTH : integer range 32 to 256 := 32;
C_NATIVE_DATA_WIDTH : integer range 32 to 128 := 32
);
port (
ip2bus_mst_addr : in std_logic_vector(C_M_AXI_ADDR_WIDTH-1 downto 0);
ip2bus_mst_be : in std_logic_vector((C_NATIVE_DATA_WIDTH/8)-1 downto 0);
ip2bus_mst_length : in std_logic_vector(C_LENGTH_WIDTH-1 downto 0);
ip2bus_mst_lock : in std_logic;
ip2bus_mst_reset : in std_logic;
ip2bus_mst_type : in std_logic;
ip2bus_mstrd_dst_dsc_n : in std_logic;
ip2bus_mstrd_dst_rdy_n : in std_logic;
ip2bus_mstrd_req : in std_logic;
ip2bus_mstwr_d : in std_logic_vector(C_NATIVE_DATA_WIDTH-1 downto 0);
ip2bus_mstwr_eof_n : in std_logic;
ip2bus_mstwr_rem : in std_logic_vector((C_NATIVE_DATA_WIDTH/8)-1 downto 0);
ip2bus_mstwr_req : in std_logic;
ip2bus_mstwr_sof_n : in std_logic;
ip2bus_mstwr_src_dsc_n : in std_logic;
ip2bus_mstwr_src_rdy_n : in std_logic;
m_axi_aclk : in std_logic;
m_axi_aresetn : in std_logic;
m_axi_arready : in std_logic;
m_axi_awready : in std_logic;
m_axi_bresp : in std_logic_vector(1 downto 0);
m_axi_bvalid : in std_logic;
m_axi_rdata : in std_logic_vector(C_M_AXI_DATA_WIDTH-1 downto 0);
m_axi_rlast : in std_logic;
m_axi_rresp : in std_logic_vector(1 downto 0);
m_axi_rvalid : in std_logic;
m_axi_wready : in std_logic;
bus2ip_mst_cmd_timeout : out std_logic;
bus2ip_mst_cmdack : out std_logic;
bus2ip_mst_cmplt : out std_logic;
bus2ip_mst_error : out std_logic;
bus2ip_mst_rearbitrate : out std_logic;
bus2ip_mstrd_d : out std_logic_vector(C_NATIVE_DATA_WIDTH-1 downto 0);
bus2ip_mstrd_eof_n : out std_logic;
bus2ip_mstrd_rem : out std_logic_vector((C_NATIVE_DATA_WIDTH/8)-1 downto 0);
bus2ip_mstrd_sof_n : out std_logic;
bus2ip_mstrd_src_dsc_n : out std_logic;
bus2ip_mstrd_src_rdy_n : out std_logic;
bus2ip_mstwr_dst_dsc_n : out std_logic;
bus2ip_mstwr_dst_rdy_n : out std_logic;
m_axi_araddr : out std_logic_vector(C_M_AXI_ADDR_WIDTH-1 downto 0);
m_axi_arburst : out std_logic_vector(1 downto 0);
m_axi_arcache : out std_logic_vector(3 downto 0);
m_axi_arlen : out std_logic_vector(7 downto 0);
m_axi_arprot : out std_logic_vector(2 downto 0);
m_axi_arsize : out std_logic_vector(2 downto 0);
m_axi_arvalid : out std_logic;
m_axi_awaddr : out std_logic_vector(C_M_AXI_ADDR_WIDTH-1 downto 0);
m_axi_awburst : out std_logic_vector(1 downto 0);
m_axi_awcache : out std_logic_vector(3 downto 0);
m_axi_awlen : out std_logic_vector(7 downto 0);
m_axi_awprot : out std_logic_vector(2 downto 0);
m_axi_awsize : out std_logic_vector(2 downto 0);
m_axi_awvalid : out std_logic;
m_axi_bready : out std_logic;
m_axi_rready : out std_logic;
m_axi_wdata : out std_logic_vector(C_M_AXI_DATA_WIDTH-1 downto 0);
m_axi_wlast : out std_logic;
m_axi_wstrb : out std_logic_vector((C_M_AXI_DATA_WIDTH/8)-1 downto 0);
m_axi_wvalid : out std_logic;
md_error : out std_logic
);
end component;
---- Architecture declarations -----
constant C_ADDR_PAD_ZERO : std_logic_vector(31 downto 0) := (others => '0');
-- openMAC REG PLB Slave
constant C_MAC_REG_BASE : std_logic_vector(63 downto 0) := C_ADDR_PAD_ZERO & C_S_AXI_MAC_REG_RNG0_BASEADDR;
constant C_MAC_REG_HIGH : std_logic_vector(63 downto 0) := C_ADDR_PAD_ZERO & C_S_AXI_MAC_REG_RNG0_HIGHADDR;
constant C_MAC_REG_MINSIZE : std_logic_vector(31 downto 0) := conv_std_logic_vector(get_max(conv_integer(C_S_AXI_MAC_REG_RNG0_HIGHADDR), conv_integer(C_S_AXI_MAC_REG_RNG1_HIGHADDR)), 32);
-- openMAC CMP PLB Slave
constant C_MAC_CMP_BASE : std_logic_vector(63 downto 0) := C_ADDR_PAD_ZERO & C_S_AXI_MAC_REG_RNG1_BASEADDR;
constant C_MAC_CMP_HIGH : std_logic_vector(63 downto 0) := C_ADDR_PAD_ZERO & C_S_AXI_MAC_REG_RNG1_HIGHADDR;
-- openMAC PKT PLB Slave
constant C_MAC_PKT_BASE : std_logic_vector(63 downto 0) := C_ADDR_PAD_ZERO & C_S_AXI_MAC_PKT_BASEADDR;
constant C_MAC_PKT_HIGH : std_logic_vector(63 downto 0) := C_ADDR_PAD_ZERO & C_S_AXI_MAC_PKT_HIGHADDR;
constant C_MAC_PKT_MINSIZE : std_logic_vector(31 downto 0) := C_S_AXI_MAC_PKT_HIGHADDR;
-- SimpleIO Slave
constant C_SMP_PCP_BASE : std_logic_vector(63 downto 0) := C_ADDR_PAD_ZERO & C_S_AXI_SMP_PCP_BASEADDR;
constant C_SMP_PCP_HIGH : std_logic_vector(63 downto 0) := C_ADDR_PAD_ZERO & C_S_AXI_SMP_PCP_HIGHADDR;
constant C_SMP_PCP_MINSIZE : std_logic_vector(31 downto 0) := C_S_AXI_SMP_PCP_HIGHADDR;
-- PDI PCP Slave
constant C_PDI_PCP_BASE : std_logic_vector(63 downto 0) := C_ADDR_PAD_ZERO & C_S_AXI_PDI_PCP_BASEADDR;
constant C_PDI_PCP_HIGH : std_logic_vector(63 downto 0) := C_ADDR_PAD_ZERO & C_S_AXI_PDI_PCP_HIGHADDR;
constant C_PDI_PCP_MINSIZE : std_logic_vector(31 downto 0) := C_S_AXI_PDI_PCP_HIGHADDR;
-- AP PCP Slave
constant C_PDI_AP_BASE : std_logic_vector(63 downto 0) := C_ADDR_PAD_ZERO & C_S_AXI_PDI_AP_BASEADDR;
constant C_PDI_AP_HIGH : std_logic_vector(63 downto 0) := C_ADDR_PAD_ZERO & C_S_AXI_PDI_AP_HIGHADDR;
constant C_PDI_AP_MINSIZE : std_logic_vector(31 downto 0) := C_S_AXI_PDI_AP_HIGHADDR;
-- POWERLINK IP-core
constant C_MAC_PKT_EN : boolean := C_TX_INT_PKT or C_RX_INT_PKT;
constant C_MAC_PKT_RX_EN : boolean := C_RX_INT_PKT;
constant C_DMA_EN : boolean := not C_TX_INT_PKT or not C_RX_INT_PKT;
constant C_PKT_BUF_EN : boolean := C_MAC_PKT_EN;
constant C_M_BURSTCOUNT_WIDTH : integer := integer(ceil(log2(real(get_max(C_MAC_DMA_BURST_SIZE_RX,C_MAC_DMA_BURST_SIZE_TX)/4)))) + 1; --in dwords
constant C_M_FIFO_SIZE_RX : integer := C_MAC_DMA_FIFO_SIZE_RX/4; --in dwords
constant C_M_FIFO_SIZE_TX : integer := C_MAC_DMA_FIFO_SIZE_TX/4; --in dwords
---- Constants -----
constant VCC_CONSTANT : std_logic := '1';
constant GND_CONSTANT : std_logic := '0';
---- Signal declarations used on the diagram ----
signal ap_chipselect : std_logic;
signal ap_read : std_logic;
signal ap_waitrequest : std_logic;
signal ap_write : std_logic;
signal bus2MAC_DMA_mstrd_eof_n : std_logic;
signal bus2MAC_DMA_mstrd_sof_n : std_logic;
signal bus2MAC_DMA_mstrd_src_dsc_n : std_logic;
signal bus2MAC_DMA_mstrd_src_rdy_n : std_logic;
signal bus2MAC_DMA_mstwr_dst_dsc_n : std_logic;
signal bus2MAC_DMA_mstwr_dst_rdy_n : std_logic;
signal bus2MAC_DMA_mst_cmdack : std_logic;
signal bus2MAC_DMA_mst_cmd_timeout : std_logic;
signal bus2MAC_DMA_mst_cmplt : std_logic;
signal bus2MAC_DMA_mst_error : std_logic;
signal bus2MAC_DMA_mst_rearbitrate : std_logic;
signal Bus2MAC_PKT_Clk : std_logic;
signal Bus2MAC_PKT_Reset : std_logic := '0';
signal Bus2MAC_PKT_Resetn : std_logic;
signal Bus2MAC_PKT_RNW : std_logic;
signal Bus2MAC_REG_Clk : std_logic;
signal Bus2MAC_REG_Reset : std_logic := '0';
signal Bus2MAC_REG_Resetn : std_logic;
signal Bus2MAC_REG_RNW : std_logic;
signal Bus2MAC_REG_RNW_fast : std_logic;
signal Bus2MAC_REG_RNW_n : std_logic;
signal Bus2PDI_AP_Clk : std_logic;
signal Bus2PDI_AP_Reset : std_logic := '0';
signal Bus2PDI_AP_Resetn : std_logic;
signal Bus2PDI_AP_RNW : std_logic;
signal Bus2PDI_PCP_Clk : std_logic;
signal Bus2PDI_PCP_Reset : std_logic := '0';
signal Bus2PDI_PCP_Resetn : std_logic;
signal Bus2PDI_PCP_RNW : std_logic;
signal Bus2SMP_PCP_Clk : std_logic;
signal Bus2SMP_PCP_Reset : std_logic := '0';
signal Bus2SMP_PCP_Resetn : std_logic;
signal Bus2SMP_PCP_RNW : std_logic;
signal clkAp : std_logic;
signal clkPcp : std_logic;
signal GND : std_logic;
signal IP2Bus_Error_s : std_logic;
signal IP2Bus_RdAck_fast : std_logic;
signal IP2Bus_RdAck_s : std_logic;
signal IP2Bus_WrAck_fast : std_logic;
signal IP2Bus_WrAck_s : std_logic;
signal mac_chipselect : std_logic;
signal MAC_CMP2Bus_Error : std_logic;
signal MAC_CMP2Bus_RdAck : std_logic;
signal MAC_CMP2Bus_WrAck : std_logic;
signal MAC_DMA2bus_mstrd_dst_dsc_n : std_logic;
signal MAC_DMA2bus_mstrd_dst_rdy_n : std_logic;
signal MAC_DMA2bus_mstrd_req : std_logic;
signal MAC_DMA2bus_mstwr_eof_n : std_logic;
signal MAC_DMA2bus_mstwr_req : std_logic;
signal MAC_DMA2bus_mstwr_sof_n : std_logic;
signal MAC_DMA2bus_mstwr_src_dsc_n : std_logic;
signal MAC_DMA2bus_mstwr_src_rdy_n : std_logic;
signal MAC_DMA2bus_mst_lock : std_logic;
signal MAC_DMA2bus_mst_reset : std_logic;
signal MAC_DMA2bus_mst_type : std_logic;
signal MAC_DMA_areset : std_logic;
signal mac_irq_s : std_logic;
signal MAC_PKT2Bus_Error : std_logic;
signal MAC_PKT2Bus_RdAck : std_logic;
signal MAC_PKT2Bus_WrAck : std_logic;
signal mac_read : std_logic;
signal MAC_REG2Bus_Error : std_logic;
signal MAC_REG2Bus_RdAck : std_logic;
signal MAC_REG2Bus_WrAck : std_logic;
signal mac_waitrequest : std_logic;
signal mac_write : std_logic;
signal mbf_chipselect : std_logic;
signal mbf_read : std_logic;
signal mbf_waitrequest : std_logic;
signal mbf_write : std_logic;
signal m_clk : std_logic;
signal m_read : std_logic;
signal m_readdatavalid : std_logic;
signal m_waitrequest : std_logic;
signal m_write : std_logic;
signal NET38418 : std_ulogic;
signal NET38470 : std_ulogic;
signal pcp_chipselect : std_logic;
signal pcp_read : std_logic;
signal pcp_waitrequest : std_logic;
signal pcp_write : std_logic;
signal PDI_AP2Bus_Error : std_logic;
signal PDI_AP2Bus_RdAck : std_logic;
signal PDI_AP2Bus_WrAck : std_logic;
signal PDI_PCP2Bus_Error : std_logic;
signal PDI_PCP2Bus_RdAck : std_logic;
signal PDI_PCP2Bus_WrAck : std_logic;
signal pkt_clk : std_logic;
signal rst : std_logic := '0';
signal rstAp : std_logic := '0';
signal rstPcp : std_logic := '0';
signal smp_address : std_logic;
signal smp_chipselect : std_logic;
signal SMP_PCP2Bus_Error : std_logic;
signal SMP_PCP2Bus_RdAck : std_logic;
signal SMP_PCP2Bus_WrAck : std_logic;
signal smp_read : std_logic;
signal smp_waitrequest : std_logic;
signal smp_write : std_logic;
signal tcp_chipselect : std_logic;
signal tcp_irq_s : std_logic;
signal tcp_read : std_logic;
signal tcp_waitrequest : std_logic;
signal tcp_write : std_logic;
signal VCC : std_logic;
signal ap_address : std_logic_vector (12 downto 0);
signal ap_byteenable : std_logic_vector (3 downto 0);
signal ap_readdata : std_logic_vector (31 downto 0);
signal ap_writedata : std_logic_vector (31 downto 0);
signal bus2MAC_DMA_mstrd_d : std_logic_vector (C_M_AXI_MAC_DMA_NATIVE_DWIDTH-1 downto 0);
signal bus2MAC_DMA_mstrd_rem : std_logic_vector ((C_M_AXI_MAC_DMA_NATIVE_DWIDTH/8)-1 downto 0);
signal Bus2MAC_PKT_Addr : std_logic_vector (C_S_AXI_MAC_PKT_ADDR_WIDTH-1 downto 0);
signal Bus2MAC_PKT_BE : std_logic_vector ((C_S_AXI_MAC_PKT_DATA_WIDTH/8)-1 downto 0);
signal Bus2MAC_PKT_CS : std_logic_vector (0 downto 0);
signal Bus2MAC_PKT_Data : std_logic_vector (C_S_AXI_MAC_PKT_DATA_WIDTH-1 downto 0);
signal Bus2MAC_REG_Addr : std_logic_vector (C_S_AXI_MAC_REG_ADDR_WIDTH-1 downto 0);
signal Bus2MAC_REG_BE : std_logic_vector ((C_S_AXI_MAC_REG_DATA_WIDTH/8)-1 downto 0);
signal Bus2MAC_REG_CS : std_logic_vector (1 downto 0);
signal Bus2MAC_REG_CS_fast : std_logic_vector (1 downto 0);
signal Bus2MAC_REG_Data : std_logic_vector (C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0);
signal Bus2PDI_AP_Addr : std_logic_vector (C_S_AXI_PDI_AP_ADDR_WIDTH-1 downto 0);
signal Bus2PDI_AP_BE : std_logic_vector ((C_S_AXI_PDI_AP_DATA_WIDTH/8)-1 downto 0);
signal Bus2PDI_AP_CS : std_logic_vector (0 downto 0);
signal Bus2PDI_AP_Data : std_logic_vector (C_S_AXI_PDI_AP_DATA_WIDTH-1 downto 0);
signal Bus2PDI_PCP_Addr : std_logic_vector (C_S_AXI_PDI_PCP_ADDR_WIDTH-1 downto 0);
signal Bus2PDI_PCP_BE : std_logic_vector ((C_S_AXI_PDI_PCP_DATA_WIDTH/8)-1 downto 0);
signal Bus2PDI_PCP_CS : std_logic_vector (0 downto 0);
signal Bus2PDI_PCP_Data : std_logic_vector (C_S_AXI_PDI_PCP_DATA_WIDTH-1 downto 0);
signal Bus2SMP_PCP_Addr : std_logic_vector (C_S_AXI_SMP_PCP_ADDR_WIDTH-1 downto 0);
signal Bus2SMP_PCP_BE : std_logic_vector ((C_S_AXI_SMP_PCP_DATA_WIDTH/8)-1 downto 0);
signal Bus2SMP_PCP_CS : std_logic_vector (0 downto 0);
signal Bus2SMP_PCP_Data : std_logic_vector (C_S_AXI_SMP_PCP_DATA_WIDTH-1 downto 0);
signal IP2Bus_Data_fast : std_logic_vector (C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0);
signal IP2Bus_Data_s : std_logic_vector (C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0);
signal mac_address : std_logic_vector (11 downto 0);
signal mac_address_full : std_logic_vector (C_S_AXI_MAC_REG_ADDR_WIDTH-1 downto 0);
signal mac_byteenable : std_logic_vector (1 downto 0);
signal MAC_CMP2Bus_Data : std_logic_vector (C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0);
signal MAC_DMA2Bus_MstWr_d : std_logic_vector (C_M_AXI_MAC_DMA_NATIVE_DWIDTH-1 downto 0);
signal MAC_DMA2bus_mstwr_rem : std_logic_vector ((C_M_AXI_MAC_DMA_NATIVE_DWIDTH/8)-1 downto 0);
signal MAC_DMA2bus_mst_addr : std_logic_vector (C_M_AXI_MAC_DMA_ADDR_WIDTH-1 downto 0);
signal MAC_DMA2bus_mst_be : std_logic_vector ((C_M_AXI_MAC_DMA_NATIVE_DWIDTH/8)-1 downto 0);
signal MAC_DMA2bus_mst_length : std_logic_vector (C_M_AXI_MAC_DMA_LENGTH_WIDTH-1 downto 0);
signal MAC_PKT2Bus_Data : std_logic_vector (C_S_AXI_MAC_PKT_DATA_WIDTH-1 downto 0);
signal mac_readdata : std_logic_vector (15 downto 0);
signal MAC_REG2Bus_Data : std_logic_vector (C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0);
signal mac_writedata : std_logic_vector (15 downto 0);
signal mbf_address : std_logic_vector (C_MAC_PKT_SIZE_LOG2-3 downto 0);
signal mbf_byteenable : std_logic_vector (3 downto 0);
signal mbf_readdata : std_logic_vector (31 downto 0);
signal mbf_writedata : std_logic_vector (31 downto 0);
signal m_address : std_logic_vector (31 downto 0);
signal m_burstcount : std_logic_vector (C_M_BURSTCOUNT_WIDTH-1 downto 0);
signal m_burstcounter : std_logic_vector (C_M_BURSTCOUNT_WIDTH-1 downto 0);
signal m_byteenable : std_logic_vector (3 downto 0);
signal m_readdata : std_logic_vector (31 downto 0);
signal m_writedata : std_logic_vector (31 downto 0);
signal pcp_address : std_logic_vector (12 downto 0);
signal pcp_byteenable : std_logic_vector (3 downto 0);
signal pcp_readdata : std_logic_vector (31 downto 0);
signal pcp_writedata : std_logic_vector (31 downto 0);
signal PDI_AP2Bus_Data : std_logic_vector (C_S_AXI_PDI_AP_DATA_WIDTH-1 downto 0);
signal PDI_PCP2Bus_Data : std_logic_vector (C_S_AXI_PDI_PCP_DATA_WIDTH-1 downto 0);
signal smp_byteenable : std_logic_vector (3 downto 0);
signal SMP_PCP2Bus_Data : std_logic_vector (C_S_AXI_SMP_PCP_DATA_WIDTH-1 downto 0);
signal smp_readdata : std_logic_vector (31 downto 0);
signal smp_writedata : std_logic_vector (31 downto 0);
signal tcp_address : std_logic_vector (1 downto 0);
signal tcp_byteenable : std_logic_vector (3 downto 0);
signal tcp_readdata : std_logic_vector (31 downto 0);
signal tcp_writedata : std_logic_vector (31 downto 0);
begin
---- User Signal Assignments ----
-- connect mac reg with mac cmp or reg output signals
with Bus2MAC_REG_CS select
IP2Bus_Data_s <= MAC_CMP2Bus_Data when "01",
MAC_REG2Bus_Data when others; --"10" and others are decoded to MAC_REG
IP2Bus_WrAck_s <= MAC_REG2Bus_WrAck or MAC_CMP2Bus_WrAck;
IP2Bus_RdAck_s <= MAC_REG2Bus_RdAck or MAC_CMP2Bus_RdAck;
IP2Bus_Error_s <= MAC_REG2Bus_Error or MAC_CMP2Bus_Error;
mac_address <= mac_address_full(mac_address'range);
--mac_cmp assignments
---cmp_clk <= Bus2MAC_CMP_Clk;
tcp_writedata <= Bus2MAC_REG_Data;
tcp_read <= Bus2MAC_REG_RNW;
tcp_write <= not Bus2MAC_REG_RNW;
tcp_chipselect <= Bus2MAC_REG_CS(0);
tcp_byteenable <= Bus2MAC_REG_BE;
tcp_address <= Bus2MAC_REG_Addr(3 downto 2);
MAC_CMP2Bus_Data <= tcp_readdata;
MAC_CMP2Bus_RdAck <= tcp_chipselect and tcp_read and not tcp_waitrequest;
MAC_CMP2Bus_WrAck <= tcp_chipselect and tcp_write and not tcp_waitrequest;
MAC_CMP2Bus_Error <= '0';
--mac_pkt assignments
pkt_clk <= Bus2MAC_PKT_Clk;
Bus2MAC_PKT_Reset <= not Bus2MAC_PKT_Resetn;
mbf_writedata <= Bus2MAC_PKT_Data;
-- Bus2MAC_PKT_Data(7 downto 0) & Bus2MAC_PKT_Data(15 downto 8) &
-- Bus2MAC_PKT_Data(23 downto 16) & Bus2MAC_PKT_Data(31 downto 24);
mbf_read <= Bus2MAC_PKT_RNW;
mbf_write <= not Bus2MAC_PKT_RNW;
mbf_chipselect <= Bus2MAC_PKT_CS(0);
mbf_byteenable <= Bus2MAC_PKT_BE;
mbf_address <= Bus2MAC_PKT_Addr(C_MAC_PKT_SIZE_LOG2-1 downto 2);
MAC_PKT2Bus_Data <= mbf_readdata;
MAC_PKT2Bus_RdAck <= mbf_chipselect and mbf_read and not mbf_waitrequest;
MAC_PKT2Bus_WrAck <= mbf_chipselect and mbf_write and not mbf_waitrequest;
MAC_PKT2Bus_Error <= '0';
--test_port
--test_port(181 downto 179) <= mac_chipselect & mac_write & mac_read;
--test_port(178) <= mac_waitrequest;
--test_port(177 downto 176) <= mac_byteenable;
--
--test_port(171 downto 160) <= mac_address;
--test_port(159 downto 144) <= mac_writedata;
--test_port(143 downto 128) <= mac_readdata;
--
--test_port(104 downto 102) <= Bus2MAC_REG_CS & Bus2MAC_REG_RNW;
--test_port(101 downto 100) <= IP2Bus_WrAck_s & IP2Bus_RdAck_s;
--test_port(99 downto 96) <= Bus2MAC_REG_BE;
--
--test_port(95 downto 64) <= Bus2MAC_REG_Addr;
--test_port(63 downto 32) <= Bus2MAC_REG_Data;
--test_port(31 downto 0) <= IP2Bus_Data_s;
test_port(255 downto 251) <= m_read & m_write & m_waitrequest & m_readdatavalid & MAC_DMA2Bus_Mst_Type;
test_port(244 downto 240) <= MAC_DMA2Bus_MstWr_Req & MAC_DMA2Bus_MstWr_sof_n & MAC_DMA2Bus_MstWr_eof_n & MAC_DMA2Bus_MstWr_src_rdy_n & Bus2MAC_DMA_MstWr_dst_rdy_n;
test_port(234 downto 230) <= MAC_DMA2Bus_MstRd_Req & Bus2MAC_DMA_MstRd_sof_n & Bus2MAC_DMA_MstRd_eof_n & Bus2MAC_DMA_MstRd_src_rdy_n & MAC_DMA2Bus_MstRd_dst_rdy_n;
test_port(142 downto 140) <= Bus2MAC_DMA_Mst_Cmplt & Bus2MAC_DMA_Mst_Error & Bus2MAC_DMA_Mst_Cmd_Timeout;
test_port(MAC_DMA2Bus_Mst_Length'length+120-1 downto 120) <= MAC_DMA2Bus_Mst_Length;
test_port(m_burstcount'length+110-1 downto 110) <= m_burstcount;
test_port(m_burstcounter'length+96-1 downto 96) <= m_burstcounter;
test_port(95 downto 64) <= m_address;
test_port(63 downto 32) <= m_writedata;
test_port(31 downto 0) <= m_readdata;
---- Component instantiations ----
MAC_REG_16to32 : openMAC_16to32conv
generic map (
bus_address_width => C_S_AXI_MAC_REG_ADDR_WIDTH,
gEndian => "little"
)
port map(
bus_ack_rd => MAC_REG2Bus_RdAck,
bus_ack_wr => MAC_REG2Bus_WrAck,
bus_address => Bus2MAC_REG_Addr( C_S_AXI_MAC_REG_ADDR_WIDTH-1 downto 0 ),
bus_byteenable => Bus2MAC_REG_BE( (C_S_AXI_MAC_REG_DATA_WIDTH/8)-1 downto 0 ),
bus_read => Bus2MAC_REG_RNW,
bus_readdata => MAC_REG2Bus_Data( C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0 ),
bus_select => Bus2MAC_REG_CS(1),
bus_write => Bus2MAC_REG_RNW_n,
bus_writedata => Bus2MAC_REG_Data( C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0 ),
clk => clk50,
rst => Bus2MAC_REG_Reset,
s_address => mac_address_full( C_S_AXI_MAC_REG_ADDR_WIDTH-1 downto 0 ),
s_byteenable => mac_byteenable,
s_chipselect => mac_chipselect,
s_read => mac_read,
s_readdata => mac_readdata,
s_waitrequest => mac_waitrequest,
s_write => mac_write,
s_writedata => mac_writedata
);
MAC_REG_AXI_SINGLE_SLAVE : axi_lite_ipif
generic map (
C_ARD_ADDR_RANGE_ARRAY => (C_MAC_REG_BASE,C_MAC_REG_HIGH,C_MAC_CMP_BASE,C_MAC_CMP_HIGH),
C_ARD_NUM_CE_ARRAY => (1,1),
C_DPHASE_TIMEOUT => C_S_AXI_MAC_REG_DPHASE_TIMEOUT,
C_FAMILY => C_FAMILY,
C_S_AXI_ADDR_WIDTH => C_S_AXI_MAC_REG_ADDR_WIDTH,
C_S_AXI_DATA_WIDTH => C_S_AXI_MAC_REG_DATA_WIDTH,
C_S_AXI_MIN_SIZE => C_MAC_REG_MINSIZE,
C_USE_WSTRB => C_S_AXI_MAC_REG_USE_WSTRB
)
port map(
Bus2IP_Addr => Bus2MAC_REG_Addr( C_S_AXI_MAC_REG_ADDR_WIDTH-1 downto 0 ),
Bus2IP_BE => Bus2MAC_REG_BE( (C_S_AXI_MAC_REG_DATA_WIDTH/8)-1 downto 0 ),
Bus2IP_CS => Bus2MAC_REG_CS_fast( 1 downto 0 ),
Bus2IP_Clk => Bus2MAC_REG_Clk,
Bus2IP_Data => Bus2MAC_REG_Data( C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0 ),
Bus2IP_RNW => Bus2MAC_REG_RNW_fast,
Bus2IP_RdCE => open,
Bus2IP_Resetn => Bus2MAC_REG_Resetn,
Bus2IP_WrCE => open,
IP2Bus_Data => IP2Bus_Data_fast( C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0 ),
IP2Bus_Error => IP2Bus_Error_s,
IP2Bus_RdAck => IP2Bus_RdAck_fast,
IP2Bus_WrAck => IP2Bus_WrAck_fast,
S_AXI_ACLK => S_AXI_MAC_REG_ACLK,
S_AXI_ARADDR => S_AXI_MAC_REG_ARADDR( C_S_AXI_MAC_REG_ADDR_WIDTH-1 downto 0 ),
S_AXI_ARESETN => S_AXI_MAC_REG_ARESETN,
S_AXI_ARREADY => S_AXI_MAC_REG_ARREADY,
S_AXI_ARVALID => S_AXI_MAC_REG_ARVALID,
S_AXI_AWADDR => S_AXI_MAC_REG_AWADDR( C_S_AXI_MAC_REG_ADDR_WIDTH-1 downto 0 ),
S_AXI_AWREADY => S_AXI_MAC_REG_AWREADY,
S_AXI_AWVALID => S_AXI_MAC_REG_AWVALID,
S_AXI_BREADY => S_AXI_MAC_REG_BREADY,
S_AXI_BRESP => S_AXI_MAC_REG_BRESP,
S_AXI_BVALID => S_AXI_MAC_REG_BVALID,
S_AXI_RDATA => S_AXI_MAC_REG_RDATA( C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0 ),
S_AXI_RREADY => S_AXI_MAC_REG_RREADY,
S_AXI_RRESP => S_AXI_MAC_REG_RRESP,
S_AXI_RVALID => S_AXI_MAC_REG_RVALID,
S_AXI_WDATA => S_AXI_MAC_REG_WDATA( C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0 ),
S_AXI_WREADY => S_AXI_MAC_REG_WREADY,
S_AXI_WSTRB => S_AXI_MAC_REG_WSTRB( (C_S_AXI_MAC_REG_DATA_WIDTH/8)-1 downto 0 ),
S_AXI_WVALID => S_AXI_MAC_REG_WVALID
);
THE_POWERLINK_IP_CORE : powerlink
generic map (
Simulate => booleanToInteger(false),
endian_g => "little",
gNumSmi => C_NUM_SMI,
genABuf1_g => booleanToInteger(C_PDI_GEN_ASYNC_BUF_0),
genABuf2_g => booleanToInteger(C_PDI_GEN_ASYNC_BUF_1),
genEvent_g => booleanToInteger(C_PDI_GEN_EVENT),
genInternalAp_g => booleanToInteger(C_GEN_AXI_BUS_IF),
genIoBuf_g => booleanToInteger(false),
genLedGadget_g => booleanToInteger(C_PDI_GEN_LED),
genOnePdiClkDomain_g => booleanToInteger(false),
genPdi_g => booleanToInteger(C_GEN_PDI),
genSimpleIO_g => booleanToInteger(C_GEN_SIMPLE_IO),
genSmiIO => booleanToInteger(false),
genSpiAp_g => booleanToInteger(C_GEN_SPI_IF),
genTimeSync_g => booleanToInteger(C_PDI_GEN_TIME_SYNC),
gen_dma_observer_g => booleanToInteger(C_OBSERVER_ENABLE),
iAsyBuf1Size_g => C_PDI_ASYNC_BUF_0,
iAsyBuf2Size_g => C_PDI_ASYNC_BUF_1,
iBufSizeLOG2_g => C_MAC_PKT_SIZE_LOG2,
iBufSize_g => C_MAC_PKT_SIZE,
iPdiRev_g => C_PDI_REV,
iRpdo0BufSize_g => C_RPDO_0_BUF_SIZE,
iRpdo1BufSize_g => C_RPDO_1_BUF_SIZE,
iRpdo2BufSize_g => C_RPDO_2_BUF_SIZE,
iRpdos_g => C_NUM_RPDO,
iTpdoBufSize_g => C_TPDO_BUF_SIZE,
iTpdos_g => C_NUM_TPDO,
m_burstcount_const_g => booleanToInteger(true),
m_burstcount_width_g => C_M_BURSTCOUNT_WIDTH,
m_data_width_g => 32,
m_rx_burst_size_g => C_MAC_DMA_BURST_SIZE_RX/4,
m_rx_fifo_size_g => C_M_FIFO_SIZE_RX,
m_tx_burst_size_g => C_MAC_DMA_BURST_SIZE_TX/4,
m_tx_fifo_size_g => C_M_FIFO_SIZE_TX,
papBigEnd_g => booleanToInteger(false),
papDataWidth_g => C_PAP_DATA_WIDTH,
papLowAct_g => booleanToInteger(C_PAP_LOW_ACT),
pcpSysId => C_PCP_SYS_ID,
pioValLen_g => C_PIO_VAL_LENGTH,
pulseWidth2ndCmpTimer_g => C_PULSE_WIDTH_2nd_CMP_TIMER,
spiBigEnd_g => booleanToInteger(false),
spiCPHA_g => booleanToInteger(C_SPI_CPHA),
spiCPOL_g => booleanToInteger(C_SPI_CPOL),
use2ndCmpTimer_g => booleanToInteger(C_MAC_GEN_SECOND_TIMER),
use2ndPhy_g => booleanToInteger(C_USE_2ND_PHY),
useIntPacketBuf_g => booleanToInteger(C_MAC_PKT_EN),
usePulse2ndCmpTimer_g => booleanToInteger(C_USE_PULSE_2nd_CMP_TIMER),
useRmii_g => booleanToInteger(C_USE_RMII),
useRxIntPacketBuf_g => booleanToInteger(C_MAC_PKT_RX_EN)
)
port map(
ap_address => ap_address,
ap_asyncIrq => ap_asyncIrq,
ap_asyncIrq_n => ap_asyncIrq_n,
ap_byteenable => ap_byteenable,
ap_chipselect => ap_chipselect,
ap_irq => open,
ap_irq_n => open,
ap_read => ap_read,
ap_readdata => ap_readdata,
ap_syncIrq => ap_syncIrq,
ap_syncIrq_n => ap_syncIrq_n,
ap_waitrequest => ap_waitrequest,
ap_write => ap_write,
ap_writedata => ap_writedata,
clk50 => clk50,
clkAp => clkAp,
clkEth => clk100,
clkPcp => clkPcp,
led_error => led_error,
led_gpo => led_gpo,
led_opt => led_opt,
led_phyAct => led_phyAct,
led_phyLink => led_phyLink,
led_status => led_status,
m_address => m_address,
m_burstcount => m_burstcount( C_M_BURSTCOUNT_WIDTH-1 downto 0 ),
m_burstcounter => m_burstcounter( C_M_BURSTCOUNT_WIDTH-1 downto 0 ),
m_byteenable => m_byteenable( 3 downto 0 ),
m_clk => m_clk,
m_read => m_read,
m_readdata => m_readdata( 31 downto 0 ),
m_readdatavalid => m_readdatavalid,
m_waitrequest => m_waitrequest,
m_write => m_write,
m_writedata => m_writedata( 31 downto 0 ),
mac_address => mac_address,
mac_byteenable => mac_byteenable,
mac_chipselect => mac_chipselect,
mac_irq => mac_irq_s,
mac_read => mac_read,
mac_readdata => mac_readdata,
mac_waitrequest => mac_waitrequest,
mac_write => mac_write,
mac_writedata => mac_writedata,
mbf_address => mbf_address( C_MAC_PKT_SIZE_LOG2-3 downto 0 ),
mbf_byteenable => mbf_byteenable,
mbf_chipselect => mbf_chipselect,
mbf_read => mbf_read,
mbf_readdata => mbf_readdata,
mbf_waitrequest => mbf_waitrequest,
mbf_write => mbf_write,
mbf_writedata => mbf_writedata,
pap_ack => pap_ack,
pap_ack_n => pap_ack_n,
pap_addr => pap_addr,
pap_be => pap_be( C_PAP_DATA_WIDTH/8-1 downto 0 ),
pap_be_n => pap_be_n( C_PAP_DATA_WIDTH/8-1 downto 0 ),
pap_cs => pap_cs,
pap_cs_n => pap_cs_n,
pap_data => open,
pap_data_I => pap_data_I( C_PAP_DATA_WIDTH-1 downto 0 ),
pap_data_O => pap_data_O( C_PAP_DATA_WIDTH-1 downto 0 ),
pap_data_T => pap_data_T,
pap_gpio => open,
pap_gpio_I => pap_gpio_I,
pap_gpio_O => pap_gpio_O,
pap_gpio_T => pap_gpio_T,
pap_rd => pap_rd,
pap_rd_n => pap_rd_n,
pap_wr => pap_wr,
pap_wr_n => pap_wr_n,
pcp_address => pcp_address,
pcp_byteenable => pcp_byteenable,
pcp_chipselect => pcp_chipselect,
pcp_read => pcp_read,
pcp_readdata => pcp_readdata,
pcp_waitrequest => pcp_waitrequest,
pcp_write => pcp_write,
pcp_writedata => pcp_writedata,
phy0_Rst_n => phy0_Rst_n,
phy0_RxDat => phy0_RxDat,
phy0_RxDv => phy0_RxDv,
phy0_RxErr => phy0_RxErr,
phy0_SMIClk => phy0_SMIClk,
phy0_SMIDat => open,
phy0_SMIDat_I => phy0_SMIDat_I,
phy0_SMIDat_O => phy0_SMIDat_O,
phy0_SMIDat_T => phy0_SMIDat_T,
phy0_TxDat => phy0_TxDat,
phy0_TxEn => phy0_TxEn,
phy0_link => phy0_link,
phy1_Rst_n => phy1_Rst_n,
phy1_RxDat => phy1_RxDat,
phy1_RxDv => phy1_RxDv,
phy1_RxErr => phy1_RxErr,
phy1_SMIClk => phy1_SMIClk,
phy1_SMIDat => open,
phy1_SMIDat_I => phy1_SMIDat_I,
phy1_SMIDat_O => phy1_SMIDat_O,
phy1_SMIDat_T => phy1_SMIDat_T,
phy1_TxDat => phy1_TxDat,
phy1_TxEn => phy1_TxEn,
phy1_link => phy1_link,
phyMii0_RxClk => phyMii0_RxClk,
phyMii0_RxDat => phyMii0_RxDat,
phyMii0_RxDv => phyMii0_RxDv,
phyMii0_RxEr => phyMii0_RxEr,
phyMii0_TxClk => phyMii0_TxClk,
phyMii0_TxDat => phyMii0_TxDat,
phyMii0_TxEn => phyMii0_TxEn,
phyMii0_TxEr => phyMii0_TxEr,
phyMii1_RxClk => phyMii1_RxClk,
phyMii1_RxDat => phyMii1_RxDat,
phyMii1_RxDv => phyMii1_RxDv,
phyMii1_RxEr => phyMii1_RxEr,
phyMii1_TxClk => phyMii1_TxClk,
phyMii1_TxDat => phyMii1_TxDat,
phyMii1_TxEn => phyMii1_TxEn,
phyMii1_TxEr => phyMii1_TxEr,
phy_Rst_n => phy_Rst_n,
phy_SMIClk => phy_SMIClk,
phy_SMIDat => open,
phy_SMIDat_I => phy_SMIDat_I,
phy_SMIDat_O => phy_SMIDat_O,
phy_SMIDat_T => phy_SMIDat_T,
pio_operational => pio_operational,
pio_pconfig => pio_pconfig,
pio_portInLatch => pio_portInLatch,
pio_portOutValid => pio_portOutValid,
pio_portio => open,
pio_portio_I => pio_portio_I,
pio_portio_O => pio_portio_O,
pio_portio_T => pio_portio_T,
pkt_clk => pkt_clk,
rst => rst,
rstAp => rstAp,
rstPcp => rstPcp,
smp_address => smp_address,
smp_byteenable => smp_byteenable,
smp_read => smp_read,
smp_readdata => smp_readdata,
smp_waitrequest => smp_waitrequest,
smp_write => smp_write,
smp_writedata => smp_writedata,
spi_clk => spi_clk,
spi_miso => spi_miso,
spi_mosi => spi_mosi,
spi_sel_n => spi_sel_n,
tcp_address => tcp_address,
tcp_byteenable => tcp_byteenable,
tcp_chipselect => tcp_chipselect,
tcp_irq => tcp_irq_s,
tcp_read => tcp_read,
tcp_readdata => tcp_readdata,
tcp_waitrequest => tcp_waitrequest,
tcp_write => tcp_write,
tcp_writedata => tcp_writedata
);
MAC_DMA_areset <= not(M_AXI_MAC_DMA_aresetn);
Bus2MAC_REG_RNW_n <= not(Bus2MAC_REG_RNW);
Bus2MAC_REG_Reset <= not(Bus2MAC_REG_Resetn);
rstPcp <= Bus2SMP_PCP_Reset or Bus2PDI_PCP_Reset or Bus2MAC_PKT_Reset;
rstAp <= Bus2PDI_AP_Reset;
rst <= Bus2MAC_REG_Reset;
macRegClkXing : clkXing
generic map (
gCsNum => 2,
gDataWidth => C_S_AXI_MAC_REG_DATA_WIDTH
)
port map(
iArst => Bus2MAC_REG_Reset,
iFastClk => Bus2MAC_REG_Clk,
iFastCs => Bus2MAC_REG_CS_fast( 1 downto 0 ),
iFastRNW => Bus2MAC_REG_RNW_fast,
iSlowClk => clk50,
iSlowRdAck => IP2Bus_RdAck_s,
iSlowReaddata => IP2Bus_Data_s( C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0 ),
iSlowWrAck => IP2Bus_WrAck_s,
oFastRdAck => IP2Bus_RdAck_fast,
oFastReaddata => IP2Bus_Data_fast( C_S_AXI_MAC_REG_DATA_WIDTH-1 downto 0 ),
oFastWrAck => IP2Bus_WrAck_fast,
oSlowCs => Bus2MAC_REG_CS( 1 downto 0 ),
oSlowRNW => Bus2MAC_REG_RNW
);
---- Power , ground assignment ----
GND <= GND_CONSTANT;
VCC <= VCC_CONSTANT;
MAC_REG2Bus_Error <= GND;
---- Terminal assignment ----
-- Output\buffer terminals
mac_irq <= mac_irq_s;
tcp_irq <= tcp_irq_s;
---- Generate statements ----
genMacDmaPlbBurst : if C_DMA_EN = TRUE generate
begin
MAC_DMA_AXI_BURST_MASTER : axi_master_burst
generic map (
C_ADDR_PIPE_DEPTH => 1,
C_FAMILY => C_FAMILY,
C_LENGTH_WIDTH => C_M_AXI_MAC_DMA_LENGTH_WIDTH,
C_MAX_BURST_LEN => C_M_AXI_MAC_DMA_MAX_BURST_LEN,
C_M_AXI_ADDR_WIDTH => C_M_AXI_MAC_DMA_ADDR_WIDTH,
C_M_AXI_DATA_WIDTH => C_M_AXI_MAC_DMA_DATA_WIDTH,
C_NATIVE_DATA_WIDTH => C_M_AXI_MAC_DMA_NATIVE_DWIDTH
)
port map(
bus2ip_mst_cmd_timeout => bus2MAC_DMA_mst_cmd_timeout,
bus2ip_mst_cmdack => bus2MAC_DMA_mst_cmdack,
bus2ip_mst_cmplt => bus2MAC_DMA_mst_cmplt,
bus2ip_mst_error => bus2MAC_DMA_mst_error,
bus2ip_mst_rearbitrate => bus2MAC_DMA_mst_rearbitrate,
bus2ip_mstrd_d => bus2MAC_DMA_mstrd_d( C_M_AXI_MAC_DMA_NATIVE_DWIDTH-1 downto 0 ),
bus2ip_mstrd_eof_n => bus2MAC_DMA_mstrd_eof_n,
bus2ip_mstrd_rem => bus2MAC_DMA_mstrd_rem( (C_M_AXI_MAC_DMA_NATIVE_DWIDTH/8)-1 downto 0 ),
bus2ip_mstrd_sof_n => bus2MAC_DMA_mstrd_sof_n,
bus2ip_mstrd_src_dsc_n => bus2MAC_DMA_mstrd_src_dsc_n,
bus2ip_mstrd_src_rdy_n => bus2MAC_DMA_mstrd_src_rdy_n,
bus2ip_mstwr_dst_dsc_n => bus2MAC_DMA_mstwr_dst_dsc_n,
bus2ip_mstwr_dst_rdy_n => bus2MAC_DMA_mstwr_dst_rdy_n,
ip2bus_mst_addr => MAC_DMA2bus_mst_addr( C_M_AXI_MAC_DMA_ADDR_WIDTH-1 downto 0 ),
ip2bus_mst_be => MAC_DMA2bus_mst_be( (C_M_AXI_MAC_DMA_NATIVE_DWIDTH/8)-1 downto 0 ),
ip2bus_mst_length => MAC_DMA2bus_mst_length( C_M_AXI_MAC_DMA_LENGTH_WIDTH-1 downto 0 ),
ip2bus_mst_lock => MAC_DMA2bus_mst_lock,
ip2bus_mst_reset => MAC_DMA2bus_mst_reset,
ip2bus_mst_type => MAC_DMA2bus_mst_type,
ip2bus_mstrd_dst_dsc_n => MAC_DMA2bus_mstrd_dst_dsc_n,
ip2bus_mstrd_dst_rdy_n => MAC_DMA2bus_mstrd_dst_rdy_n,
ip2bus_mstrd_req => MAC_DMA2bus_mstrd_req,
ip2bus_mstwr_d => MAC_DMA2bus_mstwr_d( C_M_AXI_MAC_DMA_NATIVE_DWIDTH-1 downto 0 ),
ip2bus_mstwr_eof_n => MAC_DMA2bus_mstwr_eof_n,
ip2bus_mstwr_rem => MAC_DMA2bus_mstwr_rem( (C_M_AXI_MAC_DMA_NATIVE_DWIDTH/8)-1 downto 0 ),
ip2bus_mstwr_req => MAC_DMA2bus_mstwr_req,
ip2bus_mstwr_sof_n => MAC_DMA2bus_mstwr_sof_n,
ip2bus_mstwr_src_dsc_n => MAC_DMA2bus_mstwr_src_dsc_n,
ip2bus_mstwr_src_rdy_n => MAC_DMA2bus_mstwr_src_rdy_n,
m_axi_aclk => M_AXI_MAC_DMA_aclk,
m_axi_araddr => M_AXI_MAC_DMA_araddr( C_M_AXI_MAC_DMA_ADDR_WIDTH-1 downto 0 ),
m_axi_arburst => M_AXI_MAC_DMA_arburst,
m_axi_arcache => M_AXI_MAC_DMA_arcache,
m_axi_aresetn => M_AXI_MAC_DMA_aresetn,
m_axi_arlen => M_AXI_MAC_DMA_arlen,
m_axi_arprot => M_AXI_MAC_DMA_arprot,
m_axi_arready => M_AXI_MAC_DMA_arready,
m_axi_arsize => M_AXI_MAC_DMA_arsize,
m_axi_arvalid => M_AXI_MAC_DMA_arvalid,
m_axi_awaddr => M_AXI_MAC_DMA_awaddr( C_M_AXI_MAC_DMA_ADDR_WIDTH-1 downto 0 ),
m_axi_awburst => M_AXI_MAC_DMA_awburst,
m_axi_awcache => M_AXI_MAC_DMA_awcache,
m_axi_awlen => M_AXI_MAC_DMA_awlen,
m_axi_awprot => M_AXI_MAC_DMA_awprot,
m_axi_awready => M_AXI_MAC_DMA_awready,
m_axi_awsize => M_AXI_MAC_DMA_awsize,
m_axi_awvalid => M_AXI_MAC_DMA_awvalid,
m_axi_bready => M_AXI_MAC_DMA_bready,
m_axi_bresp => M_AXI_MAC_DMA_bresp,
m_axi_bvalid => M_AXI_MAC_DMA_bvalid,
m_axi_rdata => M_AXI_MAC_DMA_rdata( C_M_AXI_MAC_DMA_DATA_WIDTH-1 downto 0 ),
m_axi_rlast => M_AXI_MAC_DMA_rlast,
m_axi_rready => M_AXI_MAC_DMA_rready,
m_axi_rresp => M_AXI_MAC_DMA_rresp,
m_axi_rvalid => M_AXI_MAC_DMA_rvalid,
m_axi_wdata => M_AXI_MAC_DMA_wdata( C_M_AXI_MAC_DMA_DATA_WIDTH-1 downto 0 ),
m_axi_wlast => M_AXI_MAC_DMA_wlast,
m_axi_wready => M_AXI_MAC_DMA_wready,
m_axi_wstrb => M_AXI_MAC_DMA_wstrb( (C_M_AXI_MAC_DMA_DATA_WIDTH/8)-1 downto 0 ),
m_axi_wvalid => M_AXI_MAC_DMA_wvalid,
md_error => M_AXI_MAC_DMA_md_error
);
end generate genMacDmaPlbBurst;
genThePlbMaster : if C_DMA_EN = TRUE generate
begin
THE_IPIF_MASTER_HANDLER : ipif_master_handler
generic map (
C_MAC_DMA_IPIF_AWIDTH => C_M_AXI_MAC_DMA_ADDR_WIDTH,
C_MAC_DMA_IPIF_NATIVE_DWIDTH => C_M_AXI_MAC_DMA_NATIVE_DWIDTH,
dma_highadr_g => m_address'high,
gen_rx_fifo_g => not C_RX_INT_PKT,
gen_tx_fifo_g => not C_TX_INT_PKT,
m_burstcount_width_g => C_M_BURSTCOUNT_WIDTH
)
port map(
Bus2MAC_DMA_MstRd_d => bus2MAC_DMA_mstrd_d( C_M_AXI_MAC_DMA_NATIVE_DWIDTH-1 downto 0 ),
Bus2MAC_DMA_MstRd_eof_n => bus2MAC_DMA_mstrd_eof_n,
Bus2MAC_DMA_MstRd_rem => bus2MAC_DMA_mstrd_rem( (C_M_AXI_MAC_DMA_NATIVE_DWIDTH/8)-1 downto 0 ),
Bus2MAC_DMA_MstRd_sof_n => bus2MAC_DMA_mstrd_sof_n,
Bus2MAC_DMA_MstRd_src_dsc_n => bus2MAC_DMA_mstrd_src_dsc_n,
Bus2MAC_DMA_MstRd_src_rdy_n => bus2MAC_DMA_mstrd_src_rdy_n,
Bus2MAC_DMA_MstWr_dst_dsc_n => bus2MAC_DMA_mstwr_dst_dsc_n,
Bus2MAC_DMA_MstWr_dst_rdy_n => bus2MAC_DMA_mstwr_dst_rdy_n,
Bus2MAC_DMA_Mst_CmdAck => bus2MAC_DMA_mst_cmdack,
Bus2MAC_DMA_Mst_Cmd_Timeout => bus2MAC_DMA_mst_cmd_timeout,
Bus2MAC_DMA_Mst_Cmplt => bus2MAC_DMA_mst_cmplt,
Bus2MAC_DMA_Mst_Error => bus2MAC_DMA_mst_error,
Bus2MAC_DMA_Mst_Rearbitrate => bus2MAC_DMA_mst_rearbitrate,
MAC_DMA2Bus_MstRd_Req => MAC_DMA2bus_mstrd_req,
MAC_DMA2Bus_MstRd_dst_dsc_n => MAC_DMA2bus_mstrd_dst_dsc_n,
MAC_DMA2Bus_MstRd_dst_rdy_n => MAC_DMA2bus_mstrd_dst_rdy_n,
MAC_DMA2Bus_MstWr_Req => MAC_DMA2bus_mstwr_req,
MAC_DMA2Bus_MstWr_d => MAC_DMA2Bus_MstWr_d( C_M_AXI_MAC_DMA_NATIVE_DWIDTH-1 downto 0 ),
MAC_DMA2Bus_MstWr_eof_n => MAC_DMA2bus_mstwr_eof_n,
MAC_DMA2Bus_MstWr_rem => MAC_DMA2bus_mstwr_rem( (C_M_AXI_MAC_DMA_NATIVE_DWIDTH/8)-1 downto 0 ),
MAC_DMA2Bus_MstWr_sof_n => MAC_DMA2bus_mstwr_sof_n,
MAC_DMA2Bus_MstWr_src_dsc_n => MAC_DMA2bus_mstwr_src_dsc_n,
MAC_DMA2Bus_MstWr_src_rdy_n => MAC_DMA2bus_mstwr_src_rdy_n,
MAC_DMA2Bus_Mst_Addr => MAC_DMA2bus_mst_addr( C_M_AXI_MAC_DMA_ADDR_WIDTH-1 downto 0 ),
MAC_DMA2Bus_Mst_BE => MAC_DMA2bus_mst_be( (C_M_AXI_MAC_DMA_NATIVE_DWIDTH/8)-1 downto 0 ),
MAC_DMA2Bus_Mst_Length => MAC_DMA2bus_mst_length( C_M_AXI_MAC_DMA_LENGTH_WIDTH-1 downto 0 ),
MAC_DMA2Bus_Mst_Lock => MAC_DMA2bus_mst_lock,
MAC_DMA2Bus_Mst_Reset => MAC_DMA2bus_mst_reset,
MAC_DMA2Bus_Mst_Type => MAC_DMA2bus_mst_type,
MAC_DMA_CLK => M_AXI_MAC_DMA_aclk,
MAC_DMA_Rst => MAC_DMA_areset,
m_address => m_address( 31 downto 0 ),
m_burstcount => m_burstcount( C_M_BURSTCOUNT_WIDTH-1 downto 0 ),
m_burstcounter => m_burstcounter( C_M_BURSTCOUNT_WIDTH-1 downto 0 ),
m_byteenable => m_byteenable,
m_clk => m_clk,
m_read => m_read,
m_readdata => m_readdata,
m_readdatavalid => m_readdatavalid,
m_waitrequest => m_waitrequest,
m_write => m_write,
m_writedata => m_writedata
);
end generate genThePlbMaster;
genMacPktPLbSingleSlave : if C_PKT_BUF_EN generate
begin
MAC_PKT_AXI_SINGLE_SLAVE : axi_lite_ipif
generic map (
C_ARD_ADDR_RANGE_ARRAY => (C_MAC_PKT_BASE,C_MAC_PKT_HIGH),
C_ARD_NUM_CE_ARRAY => (0=>1),
C_DPHASE_TIMEOUT => C_S_AXI_MAC_PKT_DPHASE_TIMEOUT,
C_FAMILY => C_FAMILY,
C_S_AXI_ADDR_WIDTH => C_S_AXI_MAC_PKT_ADDR_WIDTH,
C_S_AXI_DATA_WIDTH => C_S_AXI_MAC_PKT_DATA_WIDTH,
C_S_AXI_MIN_SIZE => C_MAC_PKT_MINSIZE,
C_USE_WSTRB => C_S_AXI_MAC_PKT_USE_WSTRB
)
port map(
Bus2IP_Addr => Bus2MAC_PKT_Addr( C_S_AXI_MAC_PKT_ADDR_WIDTH-1 downto 0 ),
Bus2IP_BE => Bus2MAC_PKT_BE( (C_S_AXI_MAC_PKT_DATA_WIDTH/8)-1 downto 0 ),
Bus2IP_CS => Bus2MAC_PKT_CS( 0 downto 0 ),
Bus2IP_Clk => Bus2MAC_PKT_Clk,
Bus2IP_Data => Bus2MAC_PKT_Data( C_S_AXI_MAC_PKT_DATA_WIDTH-1 downto 0 ),
Bus2IP_RNW => Bus2MAC_PKT_RNW,
Bus2IP_RdCE => open,
Bus2IP_Resetn => Bus2MAC_PKT_Resetn,
Bus2IP_WrCE => open,
IP2Bus_Data => MAC_PKT2Bus_Data( C_S_AXI_MAC_PKT_DATA_WIDTH-1 downto 0 ),
IP2Bus_Error => MAC_PKT2Bus_Error,
IP2Bus_RdAck => MAC_PKT2Bus_RdAck,
IP2Bus_WrAck => MAC_PKT2Bus_WrAck,
S_AXI_ACLK => S_AXI_MAC_PKT_ACLK,
S_AXI_ARADDR => S_AXI_MAC_PKT_ARADDR( C_S_AXI_MAC_PKT_ADDR_WIDTH-1 downto 0 ),
S_AXI_ARESETN => S_AXI_MAC_PKT_ARESETN,
S_AXI_ARREADY => S_AXI_MAC_PKT_ARREADY,
S_AXI_ARVALID => S_AXI_MAC_PKT_ARVALID,
S_AXI_AWADDR => S_AXI_MAC_PKT_AWADDR( C_S_AXI_MAC_PKT_ADDR_WIDTH-1 downto 0 ),
S_AXI_AWREADY => S_AXI_MAC_PKT_AWREADY,
S_AXI_AWVALID => S_AXI_MAC_PKT_AWVALID,
S_AXI_BREADY => S_AXI_MAC_PKT_BREADY,
S_AXI_BRESP => S_AXI_MAC_PKT_BRESP,
S_AXI_BVALID => S_AXI_MAC_PKT_BVALID,
S_AXI_RDATA => S_AXI_MAC_PKT_RDATA( C_S_AXI_MAC_PKT_DATA_WIDTH-1 downto 0 ),
S_AXI_RREADY => S_AXI_MAC_PKT_RREADY,
S_AXI_RRESP => S_AXI_MAC_PKT_RRESP,
S_AXI_RVALID => S_AXI_MAC_PKT_RVALID,
S_AXI_WDATA => S_AXI_MAC_PKT_WDATA( C_S_AXI_MAC_PKT_DATA_WIDTH-1 downto 0 ),
S_AXI_WREADY => S_AXI_MAC_PKT_WREADY,
S_AXI_WSTRB => S_AXI_MAC_PKT_WSTRB( (C_S_AXI_MAC_PKT_DATA_WIDTH/8)-1 downto 0 ),
S_AXI_WVALID => S_AXI_MAC_PKT_WVALID
);
end generate genMacPktPLbSingleSlave;
genPdiPcp : if (C_GEN_PDI) generate
begin
PDI_PCP_AXI_SINGLE_SLAVE : axi_lite_ipif
generic map (
C_ARD_ADDR_RANGE_ARRAY => (C_PDI_PCP_BASE,C_PDI_PCP_HIGH),
C_ARD_NUM_CE_ARRAY => (0=>1),
C_DPHASE_TIMEOUT => C_S_AXI_PDI_PCP_DPHASE_TIMEOUT,
C_FAMILY => C_FAMILY,
C_S_AXI_ADDR_WIDTH => C_S_AXI_PDI_PCP_ADDR_WIDTH,
C_S_AXI_DATA_WIDTH => C_S_AXI_PDI_PCP_DATA_WIDTH,
C_S_AXI_MIN_SIZE => C_PDI_PCP_MINSIZE,
C_USE_WSTRB => C_S_AXI_PDI_PCP_USE_WSTRB
)
port map(
Bus2IP_Addr => Bus2PDI_PCP_Addr( C_S_AXI_PDI_PCP_ADDR_WIDTH-1 downto 0 ),
Bus2IP_BE => Bus2PDI_PCP_BE( (C_S_AXI_PDI_PCP_DATA_WIDTH/8)-1 downto 0 ),
Bus2IP_CS => Bus2PDI_PCP_CS( 0 downto 0 ),
Bus2IP_Clk => Bus2PDI_PCP_Clk,
Bus2IP_Data => Bus2PDI_PCP_Data( C_S_AXI_PDI_PCP_DATA_WIDTH-1 downto 0 ),
Bus2IP_RNW => Bus2PDI_PCP_RNW,
Bus2IP_RdCE => open,
Bus2IP_Resetn => Bus2PDI_PCP_Resetn,
Bus2IP_WrCE => open,
IP2Bus_Data => PDI_PCP2Bus_Data( C_S_AXI_PDI_PCP_DATA_WIDTH-1 downto 0 ),
IP2Bus_Error => PDI_PCP2Bus_Error,
IP2Bus_RdAck => PDI_PCP2Bus_RdAck,
IP2Bus_WrAck => PDI_PCP2Bus_WrAck,
S_AXI_ACLK => S_AXI_PDI_PCP_ACLK,
S_AXI_ARADDR => S_AXI_PDI_PCP_ARADDR( C_S_AXI_PDI_PCP_ADDR_WIDTH-1 downto 0 ),
S_AXI_ARESETN => S_AXI_PDI_PCP_ARESETN,
S_AXI_ARREADY => S_AXI_PDI_PCP_ARREADY,
S_AXI_ARVALID => S_AXI_PDI_PCP_ARVALID,
S_AXI_AWADDR => S_AXI_PDI_PCP_AWADDR( C_S_AXI_PDI_PCP_ADDR_WIDTH-1 downto 0 ),
S_AXI_AWREADY => S_AXI_PDI_PCP_AWREADY,
S_AXI_AWVALID => S_AXI_PDI_PCP_AWVALID,
S_AXI_BREADY => S_AXI_PDI_PCP_BREADY,
S_AXI_BRESP => S_AXI_PDI_PCP_BRESP,
S_AXI_BVALID => S_AXI_PDI_PCP_BVALID,
S_AXI_RDATA => S_AXI_PDI_PCP_RDATA( C_S_AXI_PDI_PCP_DATA_WIDTH-1 downto 0 ),
S_AXI_RREADY => S_AXI_PDI_PCP_RREADY,
S_AXI_RRESP => S_AXI_PDI_PCP_RRESP,
S_AXI_RVALID => S_AXI_PDI_PCP_RVALID,
S_AXI_WDATA => S_AXI_PDI_PCP_WDATA( C_S_AXI_PDI_PCP_DATA_WIDTH-1 downto 0 ),
S_AXI_WREADY => S_AXI_PDI_PCP_WREADY,
S_AXI_WSTRB => S_AXI_PDI_PCP_WSTRB( (C_S_AXI_PDI_PCP_DATA_WIDTH/8)-1 downto 0 ),
S_AXI_WVALID => S_AXI_PDI_PCP_WVALID
);
end generate genPdiPcp;
genPcpPdiLink : if C_GEN_PDI generate
begin
--pdi_pcp assignments
clkPcp <= Bus2PDI_PCP_Clk;
Bus2PDI_PCP_Reset <= not Bus2PDI_PCP_Resetn;
pcp_writedata <= Bus2PDI_PCP_Data;
-- Bus2MAC_PKT_Data(7 downto 0) & Bus2MAC_PKT_Data(15 downto 8) &
-- Bus2MAC_PKT_Data(23 downto 16) & Bus2MAC_PKT_Data(31 downto 24);
pcp_read <= Bus2PDI_PCP_RNW;
pcp_write <= not Bus2PDI_PCP_RNW;
pcp_chipselect <= Bus2PDI_PCP_CS(0);
pcp_byteenable <= Bus2PDI_PCP_BE;
pcp_address <= Bus2PDI_PCP_Addr(14 downto 2);
PDI_PCP2Bus_Data <= pcp_readdata;
PDI_PCP2Bus_RdAck <= pcp_chipselect and pcp_read and not pcp_waitrequest;
PDI_PCP2Bus_WrAck <= pcp_chipselect and pcp_write and not pcp_waitrequest;
PDI_PCP2Bus_Error <= '0';
end generate genPcpPdiLink;
genPdiAp : if (C_GEN_AXI_BUS_IF) generate
begin
PDI_AP_AXI_SINGLE_SLAVE : axi_lite_ipif
generic map (
C_ARD_ADDR_RANGE_ARRAY => (C_PDI_AP_BASE,C_PDI_AP_HIGH),
C_ARD_NUM_CE_ARRAY => (0=>1),
C_DPHASE_TIMEOUT => C_S_AXI_PDI_AP_DPHASE_TIMEOUT,
C_FAMILY => C_FAMILY,
C_S_AXI_ADDR_WIDTH => C_S_AXI_PDI_AP_ADDR_WIDTH,
C_S_AXI_DATA_WIDTH => C_S_AXI_PDI_AP_DATA_WIDTH,
C_S_AXI_MIN_SIZE => C_PDI_AP_MINSIZE,
C_USE_WSTRB => C_S_AXI_PDI_AP_USE_WSTRB
)
port map(
Bus2IP_Addr => Bus2PDI_AP_Addr( C_S_AXI_PDI_AP_ADDR_WIDTH-1 downto 0 ),
Bus2IP_BE => Bus2PDI_AP_BE( (C_S_AXI_PDI_AP_DATA_WIDTH/8)-1 downto 0 ),
Bus2IP_CS => Bus2PDI_AP_CS( 0 downto 0 ),
Bus2IP_Clk => Bus2PDI_AP_Clk,
Bus2IP_Data => Bus2PDI_AP_Data( C_S_AXI_PDI_AP_DATA_WIDTH-1 downto 0 ),
Bus2IP_RNW => Bus2PDI_AP_RNW,
Bus2IP_RdCE => open,
Bus2IP_Resetn => Bus2PDI_AP_Resetn,
Bus2IP_WrCE => open,
IP2Bus_Data => PDI_AP2Bus_Data( C_S_AXI_PDI_AP_DATA_WIDTH-1 downto 0 ),
IP2Bus_Error => PDI_AP2Bus_Error,
IP2Bus_RdAck => PDI_AP2Bus_RdAck,
IP2Bus_WrAck => PDI_AP2Bus_WrAck,
S_AXI_ACLK => S_AXI_PDI_AP_ACLK,
S_AXI_ARADDR => S_AXI_PDI_AP_ARADDR( C_S_AXI_PDI_AP_ADDR_WIDTH-1 downto 0 ),
S_AXI_ARESETN => S_AXI_PDI_AP_ARESETN,
S_AXI_ARREADY => S_AXI_PDI_AP_ARREADY,
S_AXI_ARVALID => S_AXI_PDI_AP_ARVALID,
S_AXI_AWADDR => S_AXI_PDI_AP_AWADDR( C_S_AXI_PDI_AP_ADDR_WIDTH-1 downto 0 ),
S_AXI_AWREADY => S_AXI_PDI_AP_AWREADY,
S_AXI_AWVALID => S_AXI_PDI_AP_AWVALID,
S_AXI_BREADY => S_AXI_PDI_AP_BREADY,
S_AXI_BRESP => S_AXI_PDI_AP_BRESP,
S_AXI_BVALID => S_AXI_PDI_AP_BVALID,
S_AXI_RDATA => S_AXI_PDI_AP_RDATA( C_S_AXI_PDI_AP_DATA_WIDTH-1 downto 0 ),
S_AXI_RREADY => S_AXI_PDI_AP_RREADY,
S_AXI_RRESP => S_AXI_PDI_AP_RRESP,
S_AXI_RVALID => S_AXI_PDI_AP_RVALID,
S_AXI_WDATA => S_AXI_PDI_AP_WDATA( C_S_AXI_PDI_AP_DATA_WIDTH-1 downto 0 ),
S_AXI_WREADY => S_AXI_PDI_AP_WREADY,
S_AXI_WSTRB => S_AXI_PDI_AP_WSTRB( (C_S_AXI_PDI_AP_DATA_WIDTH/8)-1 downto 0 ),
S_AXI_WVALID => S_AXI_PDI_AP_WVALID
);
end generate genPdiAp;
genApPdiLink : if C_GEN_PDI generate
begin
--ap_pcp assignments
clkAp <= Bus2PDI_AP_Clk;
Bus2PDI_AP_Reset <= not Bus2PDI_AP_Resetn;
ap_writedata <= Bus2PDI_AP_Data;
-- Bus2MAC_PKT_Data(7 downto 0) & Bus2MAC_PKT_Data(15 downto 8) &
-- Bus2MAC_PKT_Data(23 downto 16) & Bus2MAC_PKT_Data(31 downto 24);
ap_read <= Bus2PDI_AP_RNW;
ap_write <= not Bus2PDI_AP_RNW;
ap_chipselect <= Bus2PDI_AP_CS(0);
ap_byteenable <= Bus2PDI_AP_BE;
ap_address <= Bus2PDI_AP_Addr(14 downto 2);
PDI_AP2Bus_Data <= ap_readdata;
PDI_AP2Bus_RdAck <= ap_chipselect and ap_read and not ap_waitrequest;
PDI_AP2Bus_WrAck <= ap_chipselect and ap_write and not ap_waitrequest;
PDI_AP2Bus_Error <= '0';
end generate genApPdiLink;
genSmpIo : if (C_GEN_SIMPLE_IO) generate
begin
SMP_IO_AXI_SINGLE_SLAVE : axi_lite_ipif
generic map (
C_ARD_ADDR_RANGE_ARRAY => (C_SMP_PCP_BASE,C_SMP_PCP_HIGH),
C_ARD_NUM_CE_ARRAY => (0=>1),
C_DPHASE_TIMEOUT => C_S_AXI_SMP_PCP_DPHASE_TIMEOUT,
C_FAMILY => C_FAMILY,
C_S_AXI_ADDR_WIDTH => C_S_AXI_SMP_PCP_ADDR_WIDTH,
C_S_AXI_DATA_WIDTH => C_S_AXI_SMP_PCP_DATA_WIDTH,
C_S_AXI_MIN_SIZE => C_SMP_PCP_MINSIZE,
C_USE_WSTRB => C_S_AXI_SMP_PCP_USE_WSTRB
)
port map(
Bus2IP_Addr => Bus2SMP_PCP_Addr( C_S_AXI_SMP_PCP_ADDR_WIDTH-1 downto 0 ),
Bus2IP_BE => Bus2SMP_PCP_BE( (C_S_AXI_SMP_PCP_DATA_WIDTH/8)-1 downto 0 ),
Bus2IP_CS => Bus2SMP_PCP_CS( 0 downto 0 ),
Bus2IP_Clk => Bus2SMP_PCP_Clk,
Bus2IP_Data => Bus2SMP_PCP_Data( C_S_AXI_SMP_PCP_DATA_WIDTH-1 downto 0 ),
Bus2IP_RNW => Bus2SMP_PCP_RNW,
Bus2IP_RdCE => open,
Bus2IP_Resetn => Bus2SMP_PCP_Resetn,
Bus2IP_WrCE => open,
IP2Bus_Data => SMP_PCP2Bus_Data( C_S_AXI_SMP_PCP_DATA_WIDTH-1 downto 0 ),
IP2Bus_Error => SMP_PCP2Bus_Error,
IP2Bus_RdAck => SMP_PCP2Bus_RdAck,
IP2Bus_WrAck => SMP_PCP2Bus_WrAck,
S_AXI_ACLK => S_AXI_SMP_PCP_ACLK,
S_AXI_ARADDR => S_AXI_SMP_PCP_ARADDR( C_S_AXI_SMP_PCP_ADDR_WIDTH-1 downto 0 ),
S_AXI_ARESETN => S_AXI_SMP_PCP_ARESETN,
S_AXI_ARREADY => S_AXI_SMP_PCP_ARREADY,
S_AXI_ARVALID => S_AXI_SMP_PCP_ARVALID,
S_AXI_AWADDR => S_AXI_SMP_PCP_AWADDR( C_S_AXI_SMP_PCP_ADDR_WIDTH-1 downto 0 ),
S_AXI_AWREADY => S_AXI_SMP_PCP_AWREADY,
S_AXI_AWVALID => S_AXI_SMP_PCP_AWVALID,
S_AXI_BREADY => S_AXI_SMP_PCP_BREADY,
S_AXI_BRESP => S_AXI_SMP_PCP_BRESP,
S_AXI_BVALID => S_AXI_SMP_PCP_BVALID,
S_AXI_RDATA => S_AXI_SMP_PCP_RDATA( C_S_AXI_SMP_PCP_DATA_WIDTH-1 downto 0 ),
S_AXI_RREADY => S_AXI_SMP_PCP_RREADY,
S_AXI_RRESP => S_AXI_SMP_PCP_RRESP,
S_AXI_RVALID => S_AXI_SMP_PCP_RVALID,
S_AXI_WDATA => S_AXI_SMP_PCP_WDATA( C_S_AXI_SMP_PCP_DATA_WIDTH-1 downto 0 ),
S_AXI_WREADY => S_AXI_SMP_PCP_WREADY,
S_AXI_WSTRB => S_AXI_SMP_PCP_WSTRB( (C_S_AXI_SMP_PCP_DATA_WIDTH/8)-1 downto 0 ),
S_AXI_WVALID => S_AXI_SMP_PCP_WVALID
);
end generate genSmpIo;
genSimpleIoSignals : if C_GEN_SIMPLE_IO generate
begin
--SMP_PCP assignments
clkPcp <= Bus2SMP_PCP_Clk;
Bus2SMP_PCP_Reset <= not Bus2SMP_PCP_Resetn;
smp_writedata <= Bus2SMP_PCP_Data;
smp_read <= Bus2SMP_PCP_RNW and Bus2SMP_PCP_CS(0);
smp_write <= not Bus2SMP_PCP_RNW and Bus2SMP_PCP_CS(0);
smp_chipselect <= Bus2SMP_PCP_CS(0);
smp_byteenable <= Bus2SMP_PCP_BE;
smp_address <= Bus2SMP_PCP_Addr(2);
SMP_PCP2Bus_Data <= smp_readdata;
SMP_PCP2Bus_RdAck <= smp_chipselect and smp_read and not smp_waitrequest;
SMP_PCP2Bus_WrAck <= smp_chipselect and smp_write and not smp_waitrequest;
SMP_PCP2Bus_Error <= '0';
end generate genSimpleIoSignals;
oddr2_0 : if not C_INSTANCE_ODDR2 generate
begin
phy0_clk <= clk50;
phy1_clk <= clk50;
end generate oddr2_0;
oddr2_1 : if C_INSTANCE_ODDR2 generate
begin
U10 : ODDR2
port map(
C0 => clk50,
C1 => NET38418,
CE => VCC,
D0 => VCC,
D1 => GND,
Q => phy0_clk,
R => GND,
S => GND
);
U11 : ODDR2
port map(
C0 => clk50,
C1 => NET38470,
CE => VCC,
D0 => VCC,
D1 => GND,
Q => phy1_clk,
R => GND,
S => GND
);
NET38470 <= not(clk50);
NET38418 <= not(clk50);
end generate oddr2_1;
end struct;
|
--------------------------------------------------------------------------------
-- Company: University of Genoa
-- Engineer: Alessio Leoncini, Alberto Oliveri
--
-- Create Date: 15:44:18 09/19/2011
-- Design Name:
-- Module Name: test.vhd
-- Project Name: NewCaos
-- Target Device:
-- Tool versions:
-- Description:
--
-- VHDL Test Bench Created by ISE for module: newCaoticGen2
--
-- Dependencies:
--
-- Revision:
-- Revision 0.01 - File Created
-- Additional Comments:
--
-- Notes:
-- This testbench has been automatically generated using types std_logic and
-- std_logic_vector for the ports of the unit under test. Xilinx recommends
-- that these types always be used for the top-level I/O of a design in order
-- to guarantee that the testbench will bind correctly to the post-implementation
-- simulation model.
--------------------------------------------------------------------------------
LIBRARY ieee;
USE ieee.std_logic_1164.ALL;
USE ieee.std_logic_signed.all;
use ieee.std_logic_arith.all;
LIBRARY std;
USE std.textio.all;
use ieee.std_logic_textio.all;
--use ieee.Signed_to_Bit.all;
use work.variable_Caos.all ;
use STD.textio.all;
-- Uncomment the following library declaration if using
-- arithmetic functions with Signed or Unsigned values
--USE ieee.numeric_std.ALL;
ENTITY test IS
END test;
ARCHITECTURE behavior OF test IS
-- Component Declaration for the Unit Under Test (UUT)
COMPONENT newCaoticGen2
PORT(
Clk : IN std_logic;
reset : IN std_logic;
X_out : OUT signed(numbit-1 downto 0)
);
END COMPONENT;
--Inputs
signal Clk : std_logic := '0';
signal reset : std_logic := '0';
--Outputs
signal X_out : signed(numbit-1 downto 0);
-- Clock period definitions
constant Clk_period : time := 10 ns;
BEGIN
-- Instantiate the Unit Under Test (UUT)
uut: newCaoticGen2 PORT MAP (
Clk => Clk,
reset => reset,
X_out => X_out
);
-- Clock process definitions
Clk_process :process
begin
Clk <= '0';
wait for Clk_period/2;
Clk <= '1';
wait for Clk_period/2;
end process;
-- Stimulus process
stim_proc: process
begin
-- hold reset state for 100 ns.
wait for 100 ns;
wait for Clk_period*100;
reset <='1';
wait for Clk_period;
reset <='0';
wait for Clk_period*100;
wait;
end process;
process (clk)
variable wrbuf :line;
begin
if (Clk'event and Clk ='1') then
write(wrbuf, conv_std_logic_vector( X_out,numBit));
-- write(wrbuf, string'("; lfsr_2: ")); write(wrbuf, conv_integer(lfsr_2));
writeline(output, wrbuf);
end if;
end process;
-- Write file process
write_file: process (Clk) is
file my_output : TEXT open WRITE_MODE is "Test.out";
variable my_line : LINE;
variable my_output_line : LINE;
begin
if rising_edge(Clk) then
write(my_output_line,X_out(numBit-1));--std_logic_vector(X_out));
writeline(my_output, my_output_line);
end if;
end process write_file;
END;
|
---------------------------------------------------
-- School: University of Massachusetts Dartmouth
-- Department: Computer and Electrical Engineering
-- Engineer: Daniel Noyes
--
-- Create Date: SPRING 2015
-- Module Name: ALU_Arithmetic_Unit
-- Project Name: ALU
-- Target Devices: Spartan-3E
-- Tool versions: Xilinx ISE 14.7
-- Description: Artithmetic Unit
-- Operations - Add, Sub, Addi
---------------------------------------------------
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;
entity Arith_Unit is
Port ( RA : in STD_LOGIC_VECTOR (7 downto 0);
RB : in STD_LOGIC_VECTOR (7 downto 0);
OP : in STD_LOGIC_VECTOR (2 downto 0);
CCR : out STD_LOGIC_VECTOR (3 downto 0);
RESULT : out STD_LOGIC_VECTOR (7 downto 0));
end Arith_Unit;
architecture Combinational of Arith_Unit is
signal a1, b1 : STD_LOGIC_VECTOR (8 downto 0) := (OTHERS => '0');
signal arith : STD_LOGIC_VECTOR (8 downto 0) := (OTHERS => '0');
begin
-- Give extra bit to accound for carry,overflow,negative
a1 <= '0' & RA;
b1 <= '0' & RB;
with OP select
arith <=
a1 + b1 when "000", -- ADD
a1 - b1 when "001", -- SUB
a1 + b1 when "101", -- ADDI
a1 + b1 when OTHERS;
CCR(3) <= arith(7); -- Negative
CCR(2) <= '1' when arith(7 downto 0) = x"0000" else '0'; -- Zero
CCR(1) <= arith(8) xor arith(7); -- Overflow
CCR(0) <= arith(8); --Carry
RESULT <= arith(7 downto 0);
end Combinational;
|
-------------------------------------------------------
--! @author Andrew Powell
--! @date March 17, 2017
--! @brief Contains the package and component declaration of the
--! Full2Lite Core's Write Controller. Please refer to the documentation
--! in plasoc_axi4_full2lite.vhd for more information.
-------------------------------------------------------
library ieee;
use ieee.std_logic_1164.ALL;
use ieee.numeric_std.all;
use work.plasoc_axi4_full2lite_pack.all;
entity plasoc_axi4_full2lite_write_cntrl is
generic (
axi_slave_id_width : integer := 1;
axi_address_width : integer := 32;
axi_data_width : integer := 32);
port (
aclk : in std_logic;
aresetn : in std_logic;
s_axi_awid : in std_logic_vector(axi_slave_id_width-1 downto 0);
s_axi_awaddr : in std_logic_vector(axi_address_width-1 downto 0);
s_axi_awlen : in std_logic_vector(8-1 downto 0);
s_axi_awsize : in std_logic_vector(3-1 downto 0);
s_axi_awburst : in std_logic_vector(2-1 downto 0);
s_axi_awlock : in std_logic;
s_axi_awcache : in std_logic_vector(4-1 downto 0);
s_axi_awprot : in std_logic_vector(3-1 downto 0);
s_axi_awqos : in std_logic_vector(4-1 downto 0);
s_axi_awregion : in std_logic_vector(4-1 downto 0);
s_axi_awvalid : in std_logic;
s_axi_awready : out std_logic;
s_axi_wdata : in std_logic_vector(axi_data_width-1 downto 0);
s_axi_wstrb : in std_logic_vector(axi_data_width/8-1 downto 0);
s_axi_wlast : in std_logic;
s_axi_wvalid : in std_logic;
s_axi_wready : out std_logic;
s_axi_bid : out std_logic_vector(axi_slave_id_width-1 downto 0) := (others=>'0');
s_axi_bresp : out std_logic_vector(2-1 downto 0) := (others=>'0');
s_axi_bvalid : out std_logic;
s_axi_bready : in std_logic;
m_axi_awaddr : out std_logic_vector(axi_address_width-1 downto 0) := (others=>'0');
m_axi_awprot : out std_logic_vector(2 downto 0) := (others=>'0');
m_axi_awvalid : out std_logic;
m_axi_awready : in std_logic;
m_axi_wvalid : out std_logic;
m_axi_wready : in std_logic;
m_axi_wdata : out std_logic_vector(axi_data_width-1 downto 0) := (others=>'0');
m_axi_wstrb : out std_logic_vector(axi_data_width/8-1 downto 0) := (others=>'0');
m_axi_bvalid : in std_logic;
m_axi_bready : out std_logic;
m_axi_bresp : in std_logic_vector(1 downto 0));
end plasoc_axi4_full2lite_write_cntrl;
architecture Behavioral of plasoc_axi4_full2lite_write_cntrl is
signal id_buff_0 : std_logic_vector(axi_slave_id_width-1 downto 0) := (others=>'0');
signal id_buff_1 : std_logic_vector(axi_slave_id_width-1 downto 0) := (others=>'0');
signal s_axi_awready_buff : std_logic := '0';
signal m_axi_awvalid_buff : std_logic := '0';
signal s_axi_wready_buff : std_logic := '0';
signal m_axi_wvalid_buff : std_logic := '0';
signal s_axi_bvalid_buff : std_logic := '0';
signal m_axi_bready_buff : std_logic := '0';
begin
s_axi_awready <= s_axi_awready_buff;
m_axi_awvalid <= m_axi_awvalid_buff;
s_axi_wready <= s_axi_wready_buff;
m_axi_wvalid <= m_axi_wvalid_buff;
s_axi_bvalid <= s_axi_bvalid_buff;
m_axi_bready <= m_axi_bready_buff;
process (aclk)
begin
if rising_edge (aclk) then
if aresetn='0' then
s_axi_awready_buff <= '1';
m_axi_awvalid_buff <= '0';
else
if s_axi_awvalid='1' and s_axi_awready_buff='1' then
id_buff_0 <= s_axi_awid;
m_axi_awaddr <= s_axi_awaddr;
m_axi_awprot <= s_axi_awprot;
end if;
if s_axi_awvalid='1' and s_axi_awready_buff='1' then
m_axi_awvalid_buff <= '1';
elsif m_axi_awvalid_buff='1' and m_axi_awready='1' then
m_axi_awvalid_buff <= '0';
end if;
if m_axi_awready='1' then
s_axi_awready_buff <= '1';
elsif s_axi_awvalid='1' and s_axi_awready_buff='1' then
s_axi_awready_buff <= '0';
end if;
end if;
end if;
end process;
process (aclk)
begin
if rising_edge(aclk) then
if aresetn='0' then
s_axi_wready_buff <= '1';
m_axi_wvalid_buff <= '0';
else
if s_axi_wvalid='1' and s_axi_wready_buff='1' then
id_buff_1 <= id_buff_0;
m_axi_wdata <= s_axi_wdata;
m_axi_wstrb <= s_axi_wstrb;
end if;
if s_axi_wvalid='1' and s_axi_wready_buff='1' then
m_axi_wvalid_buff <= '1';
elsif m_axi_wvalid_buff='1' and m_axi_wready='1' then
m_axi_wvalid_buff <= '0';
end if;
if m_axi_wready='1' then
s_axi_wready_buff <= '1';
elsif s_axi_wvalid='1' and s_axi_wready_buff='1' then
s_axi_wready_buff <= '0';
end if;
end if;
end if;
end process;
process (aclk)
begin
if rising_edge(aclk) then
if aresetn='0' then
s_axi_bvalid_buff <= '0';
m_axi_bready_buff <= '1';
else
if m_axi_bvalid='1' and m_axi_bready_buff='1' then
s_axi_bid <= id_buff_1;
s_axi_bresp <= m_axi_bresp;
end if;
if m_axi_bvalid='1' and m_axi_bready_buff='1' then
s_axi_bvalid_buff <= '1';
elsif s_axi_bvalid_buff='1' and s_axi_bready='1' then
s_axi_bvalid_buff <= '0';
end if;
if s_axi_bready='1' then
m_axi_bready_buff <= '1';
elsif m_axi_bvalid='1' and m_axi_bready_buff='1' then
m_axi_bready_buff <= '0';
end if;
end if;
end if;
end process;
end Behavioral;
|
-- ----------------------------------------------------------------------
--LOGI-hard
--Copyright (c) 2013, Jonathan Piat, Michael Jones, All rights reserved.
--
--This library is free software; you can redistribute it and/or
--modify it under the terms of the GNU Lesser General Public
--License as published by the Free Software Foundation; either
--version 3.0 of the License, or (at your option) any later version.
--
--This library is distributed in the hope that it will be useful,
--but WITHOUT ANY WARRANTY; without even the implied warranty of
--MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
--Lesser General Public License for more details.
--
--You should have received a copy of the GNU Lesser General Public
--License along with this library.
-- ----------------------------------------------------------------------
----------------------------------------------------------------------------------
-- Company:
-- Engineer:
--
-- Create Date: 09:47:08 08/26/2013
-- Design Name:
-- Module Name: mcp3002_interface - Behavioral
-- Project Name:
-- Target Devices: Spartan 6
-- Tool versions: ISE 14.1
-- Description:
--
-- Dependencies:
--
-- Revision:
-- Revision 0.01 - File Created
-- Additional Comments:
--
----------------------------------------------------------------------------------
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.NUMERIC_STD.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;
-- Uncomment the following library declaration if using
-- arithmetic functions with Signed or Unsigned values
--use IEEE.NUMERIC_STD.ALL;
-- Uncomment the following library declaration if instantiating
-- any Xilinx primitives in this code.
--library UNISIM;
--use UNISIM.VComponents.all;
library work ;
use work.logi_utils_pack.all ;
entity l3gd20_interface is
generic(CLK_DIV : positive := 100;
SAMPLING_DIV : positive := 1_000_000;
POL : std_logic := '0';
PHA : std_logic := '0');
port(
clk, resetn : std_logic ;
offset_x : in std_logic_vector(15 downto 0);
offset_y : in std_logic_vector(15 downto 0);
offset_z : in std_logic_vector(15 downto 0);
sample_x : out std_logic_vector(15 downto 0);
sample_y : out std_logic_vector(15 downto 0);
sample_z : out std_logic_vector(15 downto 0);
dv : out std_logic ;
-- spi signals
DOUT : out std_logic ;
DIN : in std_logic ;
SCLK : out std_logic ;
SSN : out std_logic
);
end l3gd20_interface;
architecture Behavioral of l3gd20_interface is
type tranfer_state is (WAIT_SAMPLE, ASSERT_CS, XFER_DATA, DEASSERT_CS);
signal current_transfer_state, next_transfer_state : tranfer_state;
signal data_out_shift_reg : std_logic_vector(15 downto 0) ;
signal data_in_shift_reg : std_logic_vector(55 downto 0);
signal load_shift_register : std_logic ;
signal tempo_val : std_logic_vector(nbit(SAMPLING_DIV)-1 downto 0);
signal count_tempo : std_logic_vector(nbit(SAMPLING_DIV)-1 downto 0 );
signal load_tempo, en_tempo, end_tempo : std_logic ;
signal data_clk, data_clk_old, data_clk_re, data_clk_fe : std_logic ;
signal en_bit_count, reset_byte_count : std_logic ;
signal bit_count, byte_count : std_logic_vector(4 downto 0);
signal bit_count_eq_8 : std_logic ;
signal cmd_word, config_word : std_logic_vector(15 downto 0);
signal init_done : std_logic ;
signal ssn_d : std_logic ;
signal shift_in_en, shift_out_en : std_logic ;
signal end_of_xfer: std_logic ;
signal latch_data : std_logic ;
signal sample_x_temp, sample_y_temp, sample_z_temp : std_logic_vector(15 downto 0);
begin
-- tempo
process(clk, resetn)
begin
if resetn = '0' then
count_tempo <= (others => '1');
elsif clk'event and clk = '1' then
if load_tempo = '1' then
count_tempo <= tempo_val ;
elsif en_tempo = '1' then
if count_tempo /= 0 then
count_tempo <= count_tempo - 1 ;
end if ;
end if ;
end if ;
end process ;
end_tempo <= '1' when count_tempo = 0 else
'0' ;
-- bit counter
process(clk, resetn)
begin
if resetn = '0' then
bit_count <= (others => '0');
byte_count <= (others => '0');
elsif clk'event and clk = '1' then
if bit_count_eq_8 = '1' then
bit_count <= (others => '0');
elsif en_bit_count = '1' then
bit_count <= bit_count + 1 ;
end if ;
if reset_byte_count = '1' then
byte_count <= (others => '0');
elsif bit_count_eq_8 = '1' then
byte_count <= byte_count + 1 ;
end if ;
end if ;
end process ;
bit_count_eq_8 <= '1' when bit_count = 8 else
'0' ;
process(clk, resetn)
begin
if resetn = '0' then
current_transfer_state <= WAIT_SAMPLE;
elsif clk'event and clk = '1' then
current_transfer_state <= next_transfer_state;
end if ;
end process ;
process(bit_count, byte_count, end_tempo, init_done, bit_count_eq_8, current_transfer_state)
begin
next_transfer_state <= current_transfer_state ;
case current_transfer_state is
when wait_sample =>
if end_tempo = '1' then
next_transfer_state <= assert_cs ;
end if ;
when assert_cs =>
if end_tempo = '1' then
next_transfer_state <= xfer_data ;
end if ;
when xfer_data =>
if end_of_xfer = '1' then
next_transfer_state <= deassert_cs ;
end if ;
when deassert_cs =>
if end_tempo = '1' then
next_transfer_state <= wait_sample ;
end if ;
when others =>
next_transfer_state <= wait_sample ;
end case;
end process ;
end_of_xfer <= '1' when byte_count = 2 and bit_count = 0 and init_done = '0' and end_tempo = '1' else -- once on reset
'1' when byte_count = 7 and bit_count = 0 and init_done = '1' and end_tempo = '1' else
'0' ;
process(clk, resetn)
begin
if resetn = '0' then
init_done <= '0' ;
elsif clk'event and clk = '1' then
if current_transfer_state = deassert_cs then
init_done <= '1' ;
end if ;
end if ;
end process ;
-- generating clk for spi communication
process(clk, resetn)
begin
if resetn = '0' then
data_clk <= '0' ;
elsif clk'event and clk = '1' then
if current_transfer_state = xfer_data and end_of_xfer = '0'then
if end_tempo = '1' then
data_clk <= not data_clk ;
end if ;
else
data_clk <= POL ;
end if ;
end if ;
end process ;
-- data clock rising edge and falling edge detect
process(clk, resetn)
begin
if resetn = '0' then
data_clk_old <= '0' ;
elsif clk'event and clk = '1' then
data_clk_old <= data_clk ;
end if ;
end process ;
data_clk_re <= data_clk and (not data_clk_old);
data_clk_fe <= (not data_clk) and data_clk_old;
-- command to send on reset ...
-- starting on register 2, and auto increment of address enabled
config_word <= X"60" & X"0F" ;--& X"00" & X"80" ;
-- L3GD20_REGISTER_OUT_X_L | 0x80 for reading the data
cmd_word <= X"E8FF" ;
shift_out_en <= data_clk_re when POL = '0' else
data_clk_fe when POL = '1' and (bit_count > 0 or byte_count > 0);
--shift register for data out
process(clk, resetn)
begin
if resetn = '0' then
data_out_shift_reg <= (others => '0') ;
elsif clk'event and clk = '1' then
if load_shift_register = '1' and init_done = '0' then
data_out_shift_reg <= config_word ;
elsif load_shift_register = '1' and init_done = '1' then
data_out_shift_reg <= cmd_word ;
elsif shift_out_en = '1' then
data_out_shift_reg(15 downto 1) <= data_out_shift_reg(14 downto 0) ;
data_out_shift_reg(0) <= '1' ;
end if ;
end if ;
end process ;
shift_in_en <= data_clk_fe when POL = '0' else
data_clk_re;--shift register for data in
process(clk, resetn)
begin
if resetn = '0' then
data_in_shift_reg <= (others => '0') ;
elsif clk'event and clk = '1' then
if shift_in_en = '1' then
data_in_shift_reg(55 downto 1) <= data_in_shift_reg(54 downto 0) ;
data_in_shift_reg(0) <= DIN ;
end if ;
end if ;
end process ;
with current_transfer_state select
load_shift_register <= end_tempo when assert_cs,
'0' when others ;
en_tempo <= '1' ;
with current_transfer_state select
tempo_val <= std_logic_vector(to_unsigned(CLK_DIV, nbit(SAMPLING_DIV))) when wait_sample,
std_logic_vector(to_unsigned(CLK_DIV, nbit(SAMPLING_DIV))) when assert_cs,
std_logic_vector(to_unsigned(CLK_DIV, nbit(SAMPLING_DIV))) when xfer_data,
std_logic_vector(to_unsigned(SAMPLING_DIV, nbit(SAMPLING_DIV))) when deassert_cs,
(others => '0') when others ;
with current_transfer_state select
load_tempo <= end_tempo when wait_sample,
end_tempo when assert_cs,
end_tempo when xfer_data,
end_tempo when deassert_cs,
'0' when others ;
with current_transfer_state select
en_bit_count <= shift_in_en when xfer_data,
'0' when others ;
with current_transfer_state select
reset_byte_count <= '1' when deassert_cs,
'1' when wait_sample,
'1' when assert_cs,
'0' when others ;
-- outputs
with current_transfer_state select
ssn_d <= '0' when assert_cs,
'0' when xfer_data,
'1' when others ;
latch_data <= '1' when current_transfer_state=xfer_data and byte_count = 7 and bit_count_eq_8 = '1' else
'0' ;
sample_x_temp(7 downto 0) <= data_in_shift_reg(47 downto 40);
sample_x_temp(15 downto 8) <= data_in_shift_reg(39 downto 32);
sample_y_temp(7 downto 0) <= data_in_shift_reg(31 downto 24);
sample_y_temp(15 downto 8) <= data_in_shift_reg(23 downto 16);
sample_z_temp(7 downto 0) <= data_in_shift_reg(15 downto 8);
sample_z_temp(15 downto 8) <= data_in_shift_reg(7 downto 0);
process(clk, resetn)
begin
if resetn = '0' then
sample_x <=(others => '0');
sample_y <= (others => '0');
sample_z <= (others => '0');
elsif clk'event and clk = '1' then
if latch_data <= '1' then
sample_x <= sample_x_temp - offset_x ;
sample_y <= sample_y_temp - offset_y ;
sample_z <= sample_z_temp - offset_z ;
end if ;
dv <= latch_data ;
end if ;
end process ;
-- todo may delete following stuf, output are not combinatorial ...
process(clk, resetn)
begin
if resetn = '0' then
DOUT <= '0' ;
SCLK <= '0' ;
SSN <= '1' ;
elsif clk'event and clk = '1' then
DOUT <= data_out_shift_reg(15) ;
SCLK <= data_clk ;
SSN <= ssn_d ;
end if ;
end process ;
end Behavioral;
|
-- ----------------------------------------------------------------------
--LOGI-hard
--Copyright (c) 2013, Jonathan Piat, Michael Jones, All rights reserved.
--
--This library is free software; you can redistribute it and/or
--modify it under the terms of the GNU Lesser General Public
--License as published by the Free Software Foundation; either
--version 3.0 of the License, or (at your option) any later version.
--
--This library is distributed in the hope that it will be useful,
--but WITHOUT ANY WARRANTY; without even the implied warranty of
--MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
--Lesser General Public License for more details.
--
--You should have received a copy of the GNU Lesser General Public
--License along with this library.
-- ----------------------------------------------------------------------
----------------------------------------------------------------------------------
-- Company:
-- Engineer:
--
-- Create Date: 09:47:08 08/26/2013
-- Design Name:
-- Module Name: mcp3002_interface - Behavioral
-- Project Name:
-- Target Devices: Spartan 6
-- Tool versions: ISE 14.1
-- Description:
--
-- Dependencies:
--
-- Revision:
-- Revision 0.01 - File Created
-- Additional Comments:
--
----------------------------------------------------------------------------------
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.NUMERIC_STD.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;
-- Uncomment the following library declaration if using
-- arithmetic functions with Signed or Unsigned values
--use IEEE.NUMERIC_STD.ALL;
-- Uncomment the following library declaration if instantiating
-- any Xilinx primitives in this code.
--library UNISIM;
--use UNISIM.VComponents.all;
library work ;
use work.logi_utils_pack.all ;
entity l3gd20_interface is
generic(CLK_DIV : positive := 100;
SAMPLING_DIV : positive := 1_000_000;
POL : std_logic := '0';
PHA : std_logic := '0');
port(
clk, resetn : std_logic ;
offset_x : in std_logic_vector(15 downto 0);
offset_y : in std_logic_vector(15 downto 0);
offset_z : in std_logic_vector(15 downto 0);
sample_x : out std_logic_vector(15 downto 0);
sample_y : out std_logic_vector(15 downto 0);
sample_z : out std_logic_vector(15 downto 0);
dv : out std_logic ;
-- spi signals
DOUT : out std_logic ;
DIN : in std_logic ;
SCLK : out std_logic ;
SSN : out std_logic
);
end l3gd20_interface;
architecture Behavioral of l3gd20_interface is
type tranfer_state is (WAIT_SAMPLE, ASSERT_CS, XFER_DATA, DEASSERT_CS);
signal current_transfer_state, next_transfer_state : tranfer_state;
signal data_out_shift_reg : std_logic_vector(15 downto 0) ;
signal data_in_shift_reg : std_logic_vector(55 downto 0);
signal load_shift_register : std_logic ;
signal tempo_val : std_logic_vector(nbit(SAMPLING_DIV)-1 downto 0);
signal count_tempo : std_logic_vector(nbit(SAMPLING_DIV)-1 downto 0 );
signal load_tempo, en_tempo, end_tempo : std_logic ;
signal data_clk, data_clk_old, data_clk_re, data_clk_fe : std_logic ;
signal en_bit_count, reset_byte_count : std_logic ;
signal bit_count, byte_count : std_logic_vector(4 downto 0);
signal bit_count_eq_8 : std_logic ;
signal cmd_word, config_word : std_logic_vector(15 downto 0);
signal init_done : std_logic ;
signal ssn_d : std_logic ;
signal shift_in_en, shift_out_en : std_logic ;
signal end_of_xfer: std_logic ;
signal latch_data : std_logic ;
signal sample_x_temp, sample_y_temp, sample_z_temp : std_logic_vector(15 downto 0);
begin
-- tempo
process(clk, resetn)
begin
if resetn = '0' then
count_tempo <= (others => '1');
elsif clk'event and clk = '1' then
if load_tempo = '1' then
count_tempo <= tempo_val ;
elsif en_tempo = '1' then
if count_tempo /= 0 then
count_tempo <= count_tempo - 1 ;
end if ;
end if ;
end if ;
end process ;
end_tempo <= '1' when count_tempo = 0 else
'0' ;
-- bit counter
process(clk, resetn)
begin
if resetn = '0' then
bit_count <= (others => '0');
byte_count <= (others => '0');
elsif clk'event and clk = '1' then
if bit_count_eq_8 = '1' then
bit_count <= (others => '0');
elsif en_bit_count = '1' then
bit_count <= bit_count + 1 ;
end if ;
if reset_byte_count = '1' then
byte_count <= (others => '0');
elsif bit_count_eq_8 = '1' then
byte_count <= byte_count + 1 ;
end if ;
end if ;
end process ;
bit_count_eq_8 <= '1' when bit_count = 8 else
'0' ;
process(clk, resetn)
begin
if resetn = '0' then
current_transfer_state <= WAIT_SAMPLE;
elsif clk'event and clk = '1' then
current_transfer_state <= next_transfer_state;
end if ;
end process ;
process(bit_count, byte_count, end_tempo, init_done, bit_count_eq_8, current_transfer_state)
begin
next_transfer_state <= current_transfer_state ;
case current_transfer_state is
when wait_sample =>
if end_tempo = '1' then
next_transfer_state <= assert_cs ;
end if ;
when assert_cs =>
if end_tempo = '1' then
next_transfer_state <= xfer_data ;
end if ;
when xfer_data =>
if end_of_xfer = '1' then
next_transfer_state <= deassert_cs ;
end if ;
when deassert_cs =>
if end_tempo = '1' then
next_transfer_state <= wait_sample ;
end if ;
when others =>
next_transfer_state <= wait_sample ;
end case;
end process ;
end_of_xfer <= '1' when byte_count = 2 and bit_count = 0 and init_done = '0' and end_tempo = '1' else -- once on reset
'1' when byte_count = 7 and bit_count = 0 and init_done = '1' and end_tempo = '1' else
'0' ;
process(clk, resetn)
begin
if resetn = '0' then
init_done <= '0' ;
elsif clk'event and clk = '1' then
if current_transfer_state = deassert_cs then
init_done <= '1' ;
end if ;
end if ;
end process ;
-- generating clk for spi communication
process(clk, resetn)
begin
if resetn = '0' then
data_clk <= '0' ;
elsif clk'event and clk = '1' then
if current_transfer_state = xfer_data and end_of_xfer = '0'then
if end_tempo = '1' then
data_clk <= not data_clk ;
end if ;
else
data_clk <= POL ;
end if ;
end if ;
end process ;
-- data clock rising edge and falling edge detect
process(clk, resetn)
begin
if resetn = '0' then
data_clk_old <= '0' ;
elsif clk'event and clk = '1' then
data_clk_old <= data_clk ;
end if ;
end process ;
data_clk_re <= data_clk and (not data_clk_old);
data_clk_fe <= (not data_clk) and data_clk_old;
-- command to send on reset ...
-- starting on register 2, and auto increment of address enabled
config_word <= X"60" & X"0F" ;--& X"00" & X"80" ;
-- L3GD20_REGISTER_OUT_X_L | 0x80 for reading the data
cmd_word <= X"E8FF" ;
shift_out_en <= data_clk_re when POL = '0' else
data_clk_fe when POL = '1' and (bit_count > 0 or byte_count > 0);
--shift register for data out
process(clk, resetn)
begin
if resetn = '0' then
data_out_shift_reg <= (others => '0') ;
elsif clk'event and clk = '1' then
if load_shift_register = '1' and init_done = '0' then
data_out_shift_reg <= config_word ;
elsif load_shift_register = '1' and init_done = '1' then
data_out_shift_reg <= cmd_word ;
elsif shift_out_en = '1' then
data_out_shift_reg(15 downto 1) <= data_out_shift_reg(14 downto 0) ;
data_out_shift_reg(0) <= '1' ;
end if ;
end if ;
end process ;
shift_in_en <= data_clk_fe when POL = '0' else
data_clk_re;--shift register for data in
process(clk, resetn)
begin
if resetn = '0' then
data_in_shift_reg <= (others => '0') ;
elsif clk'event and clk = '1' then
if shift_in_en = '1' then
data_in_shift_reg(55 downto 1) <= data_in_shift_reg(54 downto 0) ;
data_in_shift_reg(0) <= DIN ;
end if ;
end if ;
end process ;
with current_transfer_state select
load_shift_register <= end_tempo when assert_cs,
'0' when others ;
en_tempo <= '1' ;
with current_transfer_state select
tempo_val <= std_logic_vector(to_unsigned(CLK_DIV, nbit(SAMPLING_DIV))) when wait_sample,
std_logic_vector(to_unsigned(CLK_DIV, nbit(SAMPLING_DIV))) when assert_cs,
std_logic_vector(to_unsigned(CLK_DIV, nbit(SAMPLING_DIV))) when xfer_data,
std_logic_vector(to_unsigned(SAMPLING_DIV, nbit(SAMPLING_DIV))) when deassert_cs,
(others => '0') when others ;
with current_transfer_state select
load_tempo <= end_tempo when wait_sample,
end_tempo when assert_cs,
end_tempo when xfer_data,
end_tempo when deassert_cs,
'0' when others ;
with current_transfer_state select
en_bit_count <= shift_in_en when xfer_data,
'0' when others ;
with current_transfer_state select
reset_byte_count <= '1' when deassert_cs,
'1' when wait_sample,
'1' when assert_cs,
'0' when others ;
-- outputs
with current_transfer_state select
ssn_d <= '0' when assert_cs,
'0' when xfer_data,
'1' when others ;
latch_data <= '1' when current_transfer_state=xfer_data and byte_count = 7 and bit_count_eq_8 = '1' else
'0' ;
sample_x_temp(7 downto 0) <= data_in_shift_reg(47 downto 40);
sample_x_temp(15 downto 8) <= data_in_shift_reg(39 downto 32);
sample_y_temp(7 downto 0) <= data_in_shift_reg(31 downto 24);
sample_y_temp(15 downto 8) <= data_in_shift_reg(23 downto 16);
sample_z_temp(7 downto 0) <= data_in_shift_reg(15 downto 8);
sample_z_temp(15 downto 8) <= data_in_shift_reg(7 downto 0);
process(clk, resetn)
begin
if resetn = '0' then
sample_x <=(others => '0');
sample_y <= (others => '0');
sample_z <= (others => '0');
elsif clk'event and clk = '1' then
if latch_data <= '1' then
sample_x <= sample_x_temp - offset_x ;
sample_y <= sample_y_temp - offset_y ;
sample_z <= sample_z_temp - offset_z ;
end if ;
dv <= latch_data ;
end if ;
end process ;
-- todo may delete following stuf, output are not combinatorial ...
process(clk, resetn)
begin
if resetn = '0' then
DOUT <= '0' ;
SCLK <= '0' ;
SSN <= '1' ;
elsif clk'event and clk = '1' then
DOUT <= data_out_shift_reg(15) ;
SCLK <= data_clk ;
SSN <= ssn_d ;
end if ;
end process ;
end Behavioral;
|
--Copyright 1986-2015 Xilinx, Inc. All Rights Reserved.
----------------------------------------------------------------------------------
--Tool Version: Vivado v.2015.1 (win64) Build 1215546 Mon Apr 27 19:22:08 MDT 2015
--Date : Sun May 08 18:17:54 2016
--Host : Win10Desktop running 64-bit major release (build 9200)
--Command : generate_target triangle_intersect_wrapper.bd
--Design : triangle_intersect_wrapper
--Purpose : IP block netlist
----------------------------------------------------------------------------------
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
library UNISIM;
use UNISIM.VCOMPONENTS.ALL;
entity triangle_intersect_wrapper is
port (
DDR_addr : inout STD_LOGIC_VECTOR ( 14 downto 0 );
DDR_ba : inout STD_LOGIC_VECTOR ( 2 downto 0 );
DDR_cas_n : inout STD_LOGIC;
DDR_ck_n : inout STD_LOGIC;
DDR_ck_p : inout STD_LOGIC;
DDR_cke : inout STD_LOGIC;
DDR_cs_n : inout STD_LOGIC;
DDR_dm : inout STD_LOGIC_VECTOR ( 3 downto 0 );
DDR_dq : inout STD_LOGIC_VECTOR ( 31 downto 0 );
DDR_dqs_n : inout STD_LOGIC_VECTOR ( 3 downto 0 );
DDR_dqs_p : inout STD_LOGIC_VECTOR ( 3 downto 0 );
DDR_odt : inout STD_LOGIC;
DDR_ras_n : inout STD_LOGIC;
DDR_reset_n : inout STD_LOGIC;
DDR_we_n : inout STD_LOGIC;
FIXED_IO_ddr_vrn : inout STD_LOGIC;
FIXED_IO_ddr_vrp : inout STD_LOGIC;
FIXED_IO_mio : inout STD_LOGIC_VECTOR ( 53 downto 0 );
FIXED_IO_ps_clk : inout STD_LOGIC;
FIXED_IO_ps_porb : inout STD_LOGIC;
FIXED_IO_ps_srstb : inout STD_LOGIC
);
end triangle_intersect_wrapper;
architecture STRUCTURE of triangle_intersect_wrapper is
component triangle_intersect is
port (
DDR_cas_n : inout STD_LOGIC;
DDR_cke : inout STD_LOGIC;
DDR_ck_n : inout STD_LOGIC;
DDR_ck_p : inout STD_LOGIC;
DDR_cs_n : inout STD_LOGIC;
DDR_reset_n : inout STD_LOGIC;
DDR_odt : inout STD_LOGIC;
DDR_ras_n : inout STD_LOGIC;
DDR_we_n : inout STD_LOGIC;
DDR_ba : inout STD_LOGIC_VECTOR ( 2 downto 0 );
DDR_addr : inout STD_LOGIC_VECTOR ( 14 downto 0 );
DDR_dm : inout STD_LOGIC_VECTOR ( 3 downto 0 );
DDR_dq : inout STD_LOGIC_VECTOR ( 31 downto 0 );
DDR_dqs_n : inout STD_LOGIC_VECTOR ( 3 downto 0 );
DDR_dqs_p : inout STD_LOGIC_VECTOR ( 3 downto 0 );
FIXED_IO_mio : inout STD_LOGIC_VECTOR ( 53 downto 0 );
FIXED_IO_ddr_vrn : inout STD_LOGIC;
FIXED_IO_ddr_vrp : inout STD_LOGIC;
FIXED_IO_ps_srstb : inout STD_LOGIC;
FIXED_IO_ps_clk : inout STD_LOGIC;
FIXED_IO_ps_porb : inout STD_LOGIC
);
end component triangle_intersect;
begin
triangle_intersect_i: component triangle_intersect
port map (
DDR_addr(14 downto 0) => DDR_addr(14 downto 0),
DDR_ba(2 downto 0) => DDR_ba(2 downto 0),
DDR_cas_n => DDR_cas_n,
DDR_ck_n => DDR_ck_n,
DDR_ck_p => DDR_ck_p,
DDR_cke => DDR_cke,
DDR_cs_n => DDR_cs_n,
DDR_dm(3 downto 0) => DDR_dm(3 downto 0),
DDR_dq(31 downto 0) => DDR_dq(31 downto 0),
DDR_dqs_n(3 downto 0) => DDR_dqs_n(3 downto 0),
DDR_dqs_p(3 downto 0) => DDR_dqs_p(3 downto 0),
DDR_odt => DDR_odt,
DDR_ras_n => DDR_ras_n,
DDR_reset_n => DDR_reset_n,
DDR_we_n => DDR_we_n,
FIXED_IO_ddr_vrn => FIXED_IO_ddr_vrn,
FIXED_IO_ddr_vrp => FIXED_IO_ddr_vrp,
FIXED_IO_mio(53 downto 0) => FIXED_IO_mio(53 downto 0),
FIXED_IO_ps_clk => FIXED_IO_ps_clk,
FIXED_IO_ps_porb => FIXED_IO_ps_porb,
FIXED_IO_ps_srstb => FIXED_IO_ps_srstb
);
end STRUCTURE;
|
--------------------------------------------------------------------------------
--
-- BLK MEM GEN v7_3 Core - Stimulus Generator For Single Port Ram
--
--------------------------------------------------------------------------------
--
-- (c) Copyright 2006_3010 Xilinx, Inc. All rights reserved.
--
-- This file contains confidential and proprietary information
-- of Xilinx, Inc. and is protected under U.S. and
-- international copyright and other intellectual property
-- laws.
--
-- DISCLAIMER
-- This disclaimer is not a license and does not grant any
-- rights to the materials distributed herewith. Except as
-- otherwise provided in a valid license issued to you by
-- Xilinx, and to the maximum extent permitted by applicable
-- law: (1) THESE MATERIALS ARE MADE AVAILABLE "AS IS" AND
-- WITH ALL FAULTS, AND XILINX HEREBY DISCLAIMS ALL WARRANTIES
-- AND CONDITIONS, EXPRESS, IMPLIED, OR STATUTORY, INCLUDING
-- BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, NON-
-- INFRINGEMENT, OR FITNESS FOR ANY PARTICULAR PURPOSE; and
-- (2) Xilinx shall not be liable (whether in contract or tort,
-- including negligence, or under any other theory of
-- liability) for any loss or damage of any kind or nature
-- related to, arising under or in connection with these
-- materials, including for any direct, or any indirect,
-- special, incidental, or consequential loss or damage
-- (including loss of data, profits, goodwill, or any type of
-- loss or damage suffered as a result of any action brought
-- by a third party) even if such damage or loss was
-- reasonably foreseeable or Xilinx had been advised of the
-- possibility of the same.
--
-- CRITICAL APPLICATIONS
-- Xilinx products are not designed or intended to be fail-
-- safe, or for use in any application requiring fail-safe
-- performance, such as life-support or safety devices or
-- systems, Class III medical devices, nuclear facilities,
-- applications related to the deployment of airbags, or any
-- other applications that could lead to death, personal
-- injury, or severe property or environmental damage
-- (individually and collectively, "Critical
-- Applications"). Customer assumes the sole risk and
-- liability of any use of Xilinx products in Critical
-- Applications, subject only to applicable laws and
-- regulations governing limitations on product liability.
--
-- THIS COPYRIGHT NOTICE AND DISCLAIMER MUST BE RETAINED AS
-- PART OF THIS FILE AT ALL TIMES.
--------------------------------------------------------------------------------
--
-- Filename: bmg_stim_gen.vhd
--
-- Description:
-- Stimulus Generation For SRAM
-- 100 Writes and 100 Reads will be performed in a repeatitive loop till the
-- simulation ends
--
--------------------------------------------------------------------------------
-- Author: IP Solutions Division
--
-- History: Sep 12, 2011 - First Release
--------------------------------------------------------------------------------
--
--------------------------------------------------------------------------------
-- Library Declarations
--------------------------------------------------------------------------------
LIBRARY IEEE;
USE IEEE.STD_LOGIC_1164.ALL;
USE IEEE.STD_LOGIC_ARITH.ALL;
USE IEEE.STD_LOGIC_UNSIGNED.ALL;
USE IEEE.STD_LOGIC_MISC.ALL;
LIBRARY work;
USE work.ALL;
USE work.BMG_TB_PKG.ALL;
ENTITY REGISTER_LOGIC_SRAM IS
PORT(
Q : OUT STD_LOGIC;
CLK : IN STD_LOGIC;
RST : IN STD_LOGIC;
D : IN STD_LOGIC
);
END REGISTER_LOGIC_SRAM;
ARCHITECTURE REGISTER_ARCH OF REGISTER_LOGIC_SRAM IS
SIGNAL Q_O : STD_LOGIC :='0';
BEGIN
Q <= Q_O;
FF_BEH: PROCESS(CLK)
BEGIN
IF(RISING_EDGE(CLK)) THEN
IF(RST ='1') THEN
Q_O <= '0';
ELSE
Q_O <= D;
END IF;
END IF;
END PROCESS;
END REGISTER_ARCH;
LIBRARY IEEE;
USE IEEE.STD_LOGIC_1164.ALL;
USE IEEE.STD_LOGIC_ARITH.ALL;
USE IEEE.STD_LOGIC_UNSIGNED.ALL;
USE IEEE.STD_LOGIC_MISC.ALL;
LIBRARY work;
USE work.ALL;
USE work.BMG_TB_PKG.ALL;
ENTITY BMG_STIM_GEN IS
PORT (
CLK : IN STD_LOGIC;
RST : IN STD_LOGIC;
ADDRA : OUT STD_LOGIC_VECTOR(7 DOWNTO 0) := (OTHERS => '0');
DINA : OUT STD_LOGIC_VECTOR(7 DOWNTO 0) := (OTHERS => '0');
WEA : OUT STD_LOGIC_VECTOR (0 DOWNTO 0) := (OTHERS => '0');
CHECK_DATA: OUT STD_LOGIC:='0'
);
END BMG_STIM_GEN;
ARCHITECTURE BEHAVIORAL OF BMG_STIM_GEN IS
CONSTANT ZERO : STD_LOGIC_VECTOR(31 DOWNTO 0) := (OTHERS => '0');
CONSTANT DATA_PART_CNT_A: INTEGER:= DIVROUNDUP(8,8);
SIGNAL WRITE_ADDR : STD_LOGIC_VECTOR(31 DOWNTO 0) := (OTHERS => '0');
SIGNAL WRITE_ADDR_INT : STD_LOGIC_VECTOR(7 DOWNTO 0) := (OTHERS => '0');
SIGNAL READ_ADDR_INT : STD_LOGIC_VECTOR(7 DOWNTO 0) := (OTHERS => '0');
SIGNAL READ_ADDR : STD_LOGIC_VECTOR(31 DOWNTO 0) := (OTHERS => '0');
SIGNAL DINA_INT : STD_LOGIC_VECTOR(7 DOWNTO 0) := (OTHERS => '0');
SIGNAL DO_WRITE : STD_LOGIC := '0';
SIGNAL DO_READ : STD_LOGIC := '0';
SIGNAL COUNT_NO : INTEGER :=0;
SIGNAL DO_READ_REG : STD_LOGIC_VECTOR(4 DOWNTO 0) :=(OTHERS => '0');
BEGIN
WRITE_ADDR_INT(7 DOWNTO 0) <= WRITE_ADDR(7 DOWNTO 0);
READ_ADDR_INT(7 DOWNTO 0) <= READ_ADDR(7 DOWNTO 0);
ADDRA <= IF_THEN_ELSE(DO_WRITE='1',WRITE_ADDR_INT,READ_ADDR_INT) ;
DINA <= DINA_INT ;
CHECK_DATA <= DO_READ;
RD_ADDR_GEN_INST:ENTITY work.ADDR_GEN
GENERIC MAP(
C_MAX_DEPTH => 230
)
PORT MAP(
CLK => CLK,
RST => RST,
EN => DO_READ,
LOAD => '0',
LOAD_VALUE => ZERO,
ADDR_OUT => READ_ADDR
);
WR_ADDR_GEN_INST:ENTITY work.ADDR_GEN
GENERIC MAP(
C_MAX_DEPTH => 230 )
PORT MAP(
CLK => CLK,
RST => RST,
EN => DO_WRITE,
LOAD => '0',
LOAD_VALUE => ZERO,
ADDR_OUT => WRITE_ADDR
);
WR_DATA_GEN_INST:ENTITY work.DATA_GEN
GENERIC MAP (
DATA_GEN_WIDTH => 8,
DOUT_WIDTH => 8,
DATA_PART_CNT => DATA_PART_CNT_A,
SEED => 2
)
PORT MAP (
CLK => CLK,
RST => RST,
EN => DO_WRITE,
DATA_OUT => DINA_INT
);
WR_RD_PROCESS: PROCESS (CLK)
BEGIN
IF(RISING_EDGE(CLK)) THEN
IF(RST='1') THEN
DO_WRITE <= '0';
DO_READ <= '0';
COUNT_NO <= 0 ;
ELSIF(COUNT_NO < 4) THEN
DO_WRITE <= '1';
DO_READ <= '0';
COUNT_NO <= COUNT_NO + 1;
ELSIF(COUNT_NO< 8) THEN
DO_WRITE <= '0';
DO_READ <= '1';
COUNT_NO <= COUNT_NO + 1;
ELSIF(COUNT_NO=8) THEN
DO_WRITE <= '0';
DO_READ <= '0';
COUNT_NO <= 0 ;
END IF;
END IF;
END PROCESS;
BEGIN_SHIFT_REG: FOR I IN 0 TO 4 GENERATE
BEGIN
DFF_RIGHT: IF I=0 GENERATE
BEGIN
SHIFT_INST_0: ENTITY work.REGISTER_LOGIC_SRAM
PORT MAP(
Q => DO_READ_REG(0),
CLK => CLK,
RST => RST,
D => DO_READ
);
END GENERATE DFF_RIGHT;
DFF_OTHERS: IF ((I>0) AND (I<=4)) GENERATE
BEGIN
SHIFT_INST: ENTITY work.REGISTER_LOGIC_SRAM
PORT MAP(
Q => DO_READ_REG(I),
CLK => CLK,
RST => RST,
D => DO_READ_REG(I-1)
);
END GENERATE DFF_OTHERS;
END GENERATE BEGIN_SHIFT_REG;
WEA(0) <= IF_THEN_ELSE(DO_WRITE='1','1','0') ;
END ARCHITECTURE;
|
library IEEE;
use IEEE.std_logic_1164.all;
use IEEE.NUMERIC_STD.all;
entity tb_Gray_Processing_example is
end entity;
architecture rtl of tb_Gray_Processing_example is
component tb_Gray_Processing
end component;
begin
tb_Gray_Processing_instance :
component tb_Gray_Processing
port map();
end architecture rtl;
|
library IEEE;
use IEEE.std_logic_1164.all;
use IEEE.NUMERIC_STD.all;
entity tb_Gray_Processing_example is
end entity;
architecture rtl of tb_Gray_Processing_example is
component tb_Gray_Processing
end component;
begin
tb_Gray_Processing_instance :
component tb_Gray_Processing
port map();
end architecture rtl;
|
constant TRFSM1Length : integer := 1778;
constant TRFSM1Cfg : std_logic_vector(TRFSM1Length-1 downto 0) := "11111100000000000000000000011111100000000000000000000011111100000000000000000000011111100000000000000000000011111100000000000000000000011111100000000000000000000011111100000000000000000000011111100000000000000000000011111100000000000000000000011111100000000000000000000000000000000000010100000000000001001000000000000000000011000010100000001000100000000100000001000100000100000001001000000000100000001001000011000000001011000000001000000001000100001000000001001000000001000000001001000011100000000111000000001100000001000100001100000001001000000001100000001001000100000000000111001000010000000001000100010000000001001000000010000000001001000100100000000111000000010100000000010100000000000001000100000011000001000001000010100000001001000000011100000000101000010000000000101010000011100000000100100011100000000101000000100000000000101000001000000000101010000100000000000100100100000000000101000000100100000000101000000100000000101010000100100000000100100100100000000101000011111100000000000000000000000000000000011111100000000000000000000000000000000000010100000010011000000011000000010001100000101000000100100100001010000000100010000001100000110000000100010100000001001000000011000001100000010000101000000010010001111111000000000000000000000000000000000001111110000000000000000000000000000000000011111100000000000000000000000000000000000000011111100000000000000000000000000000000000000011111100000000000000000000000000000000000000011111100000000000000000000000000000000000000011111100000000000000000000000000000000000000011111100000000000000000000000000000000000000011111100000000000000000000000000000000000000000000000111111000000000000000000000000000000000000000000000001111110000000000000000000000000000000000000000000000011111100000000000000000000000000000000000000000000000";
|
-- NEED RESULT: ARCH00105.P1: Multi transport transactions occurred on signal asg with slice name prefixed by an indexed name on LHS passed
-- NEED RESULT: ARCH00105: One transport transaction occurred on signal asg with slice name prefixed by an indexed name on LHS passed
-- NEED RESULT: ARCH00105: Old transactions were removed on signal asg with slice name prefixed by an indexed name on LHS passed
-- NEED RESULT: P1: Transport transactions entirely completed passed
-------------------------------------------------------------------------------
--
-- Copyright (c) 1989 by Intermetrics, Inc.
-- All rights reserved.
--
-------------------------------------------------------------------------------
--
-- TEST NAME:
--
-- CT00105
--
-- AUTHOR:
--
-- G. Tominovich
--
-- TEST OBJECTIVES:
--
-- 8.3 (2)
-- 8.3 (3)
-- 8.3 (5)
-- 8.3.1 (3)
--
-- DESIGN UNIT ORDERING:
--
-- ENT00105(ARCH00105)
-- ENT00105_Test_Bench(ARCH00105_Test_Bench)
--
-- REVISION HISTORY:
--
-- 07-JUL-1987 - initial revision
--
-- NOTES:
--
-- self-checking
-- automatically generated
--
use WORK.STANDARD_TYPES.all ;
entity ENT00105 is
port (
s_st_arr1_vector : inout st_arr1_vector
) ;
subtype chk_sig_type is integer range -1 to 100 ;
signal chk_st_arr1_vector : chk_sig_type := -1 ;
--
end ENT00105 ;
--
architecture ARCH00105 of ENT00105 is
begin
PGEN_CHKP_1 :
process ( chk_st_arr1_vector )
begin
if Std.Standard.Now > 0 ns then
test_report ( "P1" ,
"Transport transactions entirely completed",
chk_st_arr1_vector = 4 ) ;
end if ;
end process PGEN_CHKP_1 ;
--
P1 :
process ( s_st_arr1_vector )
variable correct : boolean ;
variable counter : integer := 0 ;
variable savtime : time ;
--
procedure Proc1 is
begin
case counter is
when 0
=> s_st_arr1_vector(lowb) (lowb+1 to highb-1) <= transport
c_st_arr1_vector_2(highb)
(lowb+1 to highb-1) after 10 ns,
c_st_arr1_vector_1(highb)
(lowb+1 to highb-1) after 20 ns ;
--
when 1
=> correct :=
s_st_arr1_vector(lowb) (lowb+1 to highb-1) =
c_st_arr1_vector_2(highb) (lowb+1 to highb-1) and
(savtime + 10 ns) = Std.Standard.Now ;
--
when 2
=> correct :=
correct and
s_st_arr1_vector(lowb) (lowb+1 to highb-1) =
c_st_arr1_vector_1(highb) (lowb+1 to highb-1) and
(savtime + 10 ns) = Std.Standard.Now ;
test_report ( "ARCH00105.P1" ,
"Multi transport transactions occurred on signal " &
"asg with slice name prefixed by an indexed name on LHS",
correct ) ;
s_st_arr1_vector(lowb) (lowb+1 to highb-1) <= transport
c_st_arr1_vector_2(highb)
(lowb+1 to highb-1) after 10 ns ,
c_st_arr1_vector_1(highb)
(lowb+1 to highb-1) after 20 ns ,
c_st_arr1_vector_2(highb)
(lowb+1 to highb-1) after 30 ns ,
c_st_arr1_vector_1(highb)
(lowb+1 to highb-1) after 40 ns ;
--
when 3
=> correct :=
s_st_arr1_vector(lowb) (lowb+1 to highb-1) =
c_st_arr1_vector_2(highb) (lowb+1 to highb-1) and
(savtime + 10 ns) = Std.Standard.Now ;
s_st_arr1_vector(lowb) (lowb+1 to highb-1) <= transport
c_st_arr1_vector_1(highb)
(lowb+1 to highb-1) after 5 ns ;
--
when 4
=> correct :=
correct and
s_st_arr1_vector(lowb) (lowb+1 to highb-1) =
c_st_arr1_vector_1(highb) (lowb+1 to highb-1) and
(savtime + 5 ns) = Std.Standard.Now ;
test_report ( "ARCH00105" ,
"One transport transaction occurred on signal " &
"asg with slice name prefixed by an indexed name on LHS",
correct ) ;
test_report ( "ARCH00105" ,
"Old transactions were removed on signal " &
"asg with slice name prefixed by an indexed name on LHS",
correct ) ;
--
when others
=> -- No more transactions should have occurred
test_report ( "ARCH00105" ,
"Old transactions were removed on signal " &
"asg with slice name prefixed by an indexed name on LHS",
false ) ;
--
end case ;
--
savtime := Std.Standard.Now ;
chk_st_arr1_vector <= transport counter after (1 us - savtime) ;
counter := counter + 1;
--
end Proc1 ;
--
begin
Proc1 ;
end process P1 ;
--
--
end ARCH00105 ;
--
use WORK.STANDARD_TYPES.all ;
entity ENT00105_Test_Bench is
signal s_st_arr1_vector : st_arr1_vector
:= c_st_arr1_vector_1 ;
--
end ENT00105_Test_Bench ;
--
architecture ARCH00105_Test_Bench of ENT00105_Test_Bench is
begin
L1:
block
component UUT
port (
s_st_arr1_vector : inout st_arr1_vector
) ;
end component ;
--
for CIS1 : UUT use entity WORK.ENT00105 ( ARCH00105 ) ;
begin
CIS1 : UUT
port map (
s_st_arr1_vector
) ;
end block L1 ;
end ARCH00105_Test_Bench ;
|
-- Copyright (C) 2001 Bill Billowitch.
-- Some of the work to develop this test suite was done with Air Force
-- support. The Air Force and Bill Billowitch assume no
-- responsibilities for this software.
-- This file is part of VESTs (Vhdl tESTs).
-- VESTs is free software; you can redistribute it and/or modify it
-- under the terms of the GNU General Public License as published by the
-- Free Software Foundation; either version 2 of the License, or (at
-- your option) any later version.
-- VESTs is distributed in the hope that it will be useful, but WITHOUT
-- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-- for more details.
-- You should have received a copy of the GNU General Public License
-- along with VESTs; if not, write to the Free Software Foundation,
-- Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-- ---------------------------------------------------------------------
--
-- $Id: tc707.vhd,v 1.3 2001-10-29 02:12:46 paw Exp $
-- $Revision: 1.3 $
--
-- ---------------------------------------------------------------------
-- **************************** --
-- Ported to VHDL 93 by port93.pl - Tue Nov 5 16:38:08 1996 --
-- **************************** --
-- **************************** --
-- Reversed to VHDL 87 by reverse87.pl - Tue Nov 5 11:26:44 1996 --
-- **************************** --
-- **************************** --
-- Ported to VHDL 93 by port93.pl - Mon Nov 4 17:36:46 1996 --
-- **************************** --
package c03s04b01x00p23n01i00707pkg is
type Waveform_element is record
Value: Bit;
At: Time;
end record;
type Signal_history is file of Waveform_element;
end c03s04b01x00p23n01i00707pkg;
use work.c03s04b01x00p23n01i00707pkg.all;
ENTITY c03s04b01x00p23n01i00707ent IS
END c03s04b01x00p23n01i00707ent;
ARCHITECTURE c03s04b01x00p23n01i00707arch OF c03s04b01x00p23n01i00707ent IS
BEGIN
TESTING: PROCESS
-- Declare the actual file to read.
file FILEV : Signal_history open read_mode is "iofile.58";
-- Declare a variable into which we will read.
constant con : Waveform_element := ('1',10 ns);
variable VAR : Waveform_element;
variable k : integer := 0;
BEGIN
-- Read in the file.
for I in 1 to 100 loop
if (ENDFILE( FILEV ) /= FALSE) then
k := 1;
end if;
assert( (ENDFILE( FILEV ) = FALSE) )
report "Hit the end of file too soon.";
READ( FILEV,VAR );
if (VAR /= CON) then
k := 1;
end if;
end loop;
-- Verify that we are at the end.
if (ENDFILE( FILEV ) /= TRUE) then
k := 1;
end if;
assert( ENDFILE( FILEV ) = TRUE )
report "Have not reached end of file yet."
severity ERROR;
assert NOT( k = 0 )
report "***PASSED TEST: c03s04b01x00p23n01i00707"
severity NOTE;
assert( k = 0 )
report "***FAILED TEST: c03s04b01x00p23n01i00707 - The variables don't equal the constants."
severity ERROR;
wait;
END PROCESS TESTING;
END c03s04b01x00p23n01i00707arch;
|
-- Copyright (C) 2001 Bill Billowitch.
-- Some of the work to develop this test suite was done with Air Force
-- support. The Air Force and Bill Billowitch assume no
-- responsibilities for this software.
-- This file is part of VESTs (Vhdl tESTs).
-- VESTs is free software; you can redistribute it and/or modify it
-- under the terms of the GNU General Public License as published by the
-- Free Software Foundation; either version 2 of the License, or (at
-- your option) any later version.
-- VESTs is distributed in the hope that it will be useful, but WITHOUT
-- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-- for more details.
-- You should have received a copy of the GNU General Public License
-- along with VESTs; if not, write to the Free Software Foundation,
-- Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-- ---------------------------------------------------------------------
--
-- $Id: tc707.vhd,v 1.3 2001-10-29 02:12:46 paw Exp $
-- $Revision: 1.3 $
--
-- ---------------------------------------------------------------------
-- **************************** --
-- Ported to VHDL 93 by port93.pl - Tue Nov 5 16:38:08 1996 --
-- **************************** --
-- **************************** --
-- Reversed to VHDL 87 by reverse87.pl - Tue Nov 5 11:26:44 1996 --
-- **************************** --
-- **************************** --
-- Ported to VHDL 93 by port93.pl - Mon Nov 4 17:36:46 1996 --
-- **************************** --
package c03s04b01x00p23n01i00707pkg is
type Waveform_element is record
Value: Bit;
At: Time;
end record;
type Signal_history is file of Waveform_element;
end c03s04b01x00p23n01i00707pkg;
use work.c03s04b01x00p23n01i00707pkg.all;
ENTITY c03s04b01x00p23n01i00707ent IS
END c03s04b01x00p23n01i00707ent;
ARCHITECTURE c03s04b01x00p23n01i00707arch OF c03s04b01x00p23n01i00707ent IS
BEGIN
TESTING: PROCESS
-- Declare the actual file to read.
file FILEV : Signal_history open read_mode is "iofile.58";
-- Declare a variable into which we will read.
constant con : Waveform_element := ('1',10 ns);
variable VAR : Waveform_element;
variable k : integer := 0;
BEGIN
-- Read in the file.
for I in 1 to 100 loop
if (ENDFILE( FILEV ) /= FALSE) then
k := 1;
end if;
assert( (ENDFILE( FILEV ) = FALSE) )
report "Hit the end of file too soon.";
READ( FILEV,VAR );
if (VAR /= CON) then
k := 1;
end if;
end loop;
-- Verify that we are at the end.
if (ENDFILE( FILEV ) /= TRUE) then
k := 1;
end if;
assert( ENDFILE( FILEV ) = TRUE )
report "Have not reached end of file yet."
severity ERROR;
assert NOT( k = 0 )
report "***PASSED TEST: c03s04b01x00p23n01i00707"
severity NOTE;
assert( k = 0 )
report "***FAILED TEST: c03s04b01x00p23n01i00707 - The variables don't equal the constants."
severity ERROR;
wait;
END PROCESS TESTING;
END c03s04b01x00p23n01i00707arch;
|
-- Copyright (C) 2001 Bill Billowitch.
-- Some of the work to develop this test suite was done with Air Force
-- support. The Air Force and Bill Billowitch assume no
-- responsibilities for this software.
-- This file is part of VESTs (Vhdl tESTs).
-- VESTs is free software; you can redistribute it and/or modify it
-- under the terms of the GNU General Public License as published by the
-- Free Software Foundation; either version 2 of the License, or (at
-- your option) any later version.
-- VESTs is distributed in the hope that it will be useful, but WITHOUT
-- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-- for more details.
-- You should have received a copy of the GNU General Public License
-- along with VESTs; if not, write to the Free Software Foundation,
-- Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-- ---------------------------------------------------------------------
--
-- $Id: tc707.vhd,v 1.3 2001-10-29 02:12:46 paw Exp $
-- $Revision: 1.3 $
--
-- ---------------------------------------------------------------------
-- **************************** --
-- Ported to VHDL 93 by port93.pl - Tue Nov 5 16:38:08 1996 --
-- **************************** --
-- **************************** --
-- Reversed to VHDL 87 by reverse87.pl - Tue Nov 5 11:26:44 1996 --
-- **************************** --
-- **************************** --
-- Ported to VHDL 93 by port93.pl - Mon Nov 4 17:36:46 1996 --
-- **************************** --
package c03s04b01x00p23n01i00707pkg is
type Waveform_element is record
Value: Bit;
At: Time;
end record;
type Signal_history is file of Waveform_element;
end c03s04b01x00p23n01i00707pkg;
use work.c03s04b01x00p23n01i00707pkg.all;
ENTITY c03s04b01x00p23n01i00707ent IS
END c03s04b01x00p23n01i00707ent;
ARCHITECTURE c03s04b01x00p23n01i00707arch OF c03s04b01x00p23n01i00707ent IS
BEGIN
TESTING: PROCESS
-- Declare the actual file to read.
file FILEV : Signal_history open read_mode is "iofile.58";
-- Declare a variable into which we will read.
constant con : Waveform_element := ('1',10 ns);
variable VAR : Waveform_element;
variable k : integer := 0;
BEGIN
-- Read in the file.
for I in 1 to 100 loop
if (ENDFILE( FILEV ) /= FALSE) then
k := 1;
end if;
assert( (ENDFILE( FILEV ) = FALSE) )
report "Hit the end of file too soon.";
READ( FILEV,VAR );
if (VAR /= CON) then
k := 1;
end if;
end loop;
-- Verify that we are at the end.
if (ENDFILE( FILEV ) /= TRUE) then
k := 1;
end if;
assert( ENDFILE( FILEV ) = TRUE )
report "Have not reached end of file yet."
severity ERROR;
assert NOT( k = 0 )
report "***PASSED TEST: c03s04b01x00p23n01i00707"
severity NOTE;
assert( k = 0 )
report "***FAILED TEST: c03s04b01x00p23n01i00707 - The variables don't equal the constants."
severity ERROR;
wait;
END PROCESS TESTING;
END c03s04b01x00p23n01i00707arch;
|
entity record2008 is
end entity;
architecture test of record2008 is
type rec1 is record
x : bit_vector; -- OK
end record;
constant c1 : rec1 := ( x => "101" ); -- OK
signal s1 : rec1; -- Error
signal r1 : rec1(x(1 to 3)); -- OK
signal r2 : rec1(y(1 to 3)); -- Error
signal r3 : rec1(r2(1 to 2)); -- Error
type rec2 is record
x, y : bit_vector; -- OK
a : bit_vector(1 to 3);
b : integer;
end record;
signal r4 : rec2(x(1 to 3), y(1 to 4)); -- OK
signal r5 : rec2(x(1 to 3), x(1 to 4)); -- Error
signal r6 : rec2(x(1 to 3), p(1 to 4)); -- Error
signal r7 : rec2(b(1 to 3)); -- Error
signal r8 : rec2(x(1 to 3)); -- Error
subtype t1 is rec1(x(1 to 3)); -- OK
signal r9 : t1; -- OK
subtype t2 is rec1; -- OK
signal r10 : t2; -- Error
subtype t3 is rec2(x(1 to 5)); -- OK
signal r11 : t3(y(1 to 2)); -- OK
subtype t4 is t3(y(1 to 1)); -- OK
subtype t5 is t4(x(1 to 2)); -- Error
type rec3 is record
r : rec1; -- OK
s : bit_vector; -- OK
end record;
signal r12 : rec3; -- Error
signal r13 : rec3(r(x(1 to 3)), s(1 to 2)); -- OK
signal r14 : rec3(s(1 to 2)); -- Error
begin
p1: process is
begin
r4.x <= (others => '0'); -- OK
end process;
-- From UVVM
p2: process is
type unsigned is array(natural range <>) of bit ;
type some_config is record
a : unsigned ;
b : integer ;
end record ;
constant FINAL_CONFIG : some_config(a(0 downto 0)) := (
a => (others =>'0'), -- OK
b => 20 ) ;
constant c2 : some_config(a(0 downto 0)) := (
(others =>'0'), 20 ) ; -- OK
begin
end process;
p3: process is
type rec1_vec is array (natural range <>) of rec1;
constant c1 : rec1_vec(0 to 0)(x(1 to 3)) := ( -- OK
0 => (x => "111") );
begin
end process;
-- From "abc" test case provided by Brian Padalino
p4: process is
type Parameters_t is record
BW : natural;
PAIRS : natural;
end record;
type Indices_t is array (natural range <>) of bit_vector;
type Bus_t is record
Indices : Indices_t;
end record;
function Test(
abc_bus : Bus_t;
indices : Indices_t
) return Bus_t is
variable result : Bus_t(
Indices(abc_bus.Indices'range)(abc_bus.Indices'element'range)
); -- OK
begin
return result;
end function;
begin
end process;
p5: process is
procedure test (r : rec1) is
variable y : r'subtype; -- OK
alias yx : y.x'subtype is y.x; -- OK
begin
end procedure;
begin
end process;
end architecture;
|
entity test is
package a is new b generic map(c => baz foo'bar);
end;
|
-- #####################################################################################
--
-- #### #### #####
-- ## ## ##
-- ## ## ##### ## ## ##### ## ###### ##### ##### ##### ## ##
-- ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ##
-- ## ## ## ## ## ## ## ## ##### ## ## ## ## ## ## ## ##
-- ## ## ## ## ## ## ###### ## ###### ###### ## ## ######
-- ## ## ## ## ## ## ## ## ## ## ## ## ##
-- ## ## ## ## ## ### ## ## ## ## ## ## ## ## ## ## ## ## ##
-- #### ######## ##### # ##### ##### ## ##### ##### ##### #####
--
-- #####################################################################################
library IEEE;
use IEEE.std_logic_1164.all;
use IEEE.numeric_std.all;
entity oneshot is
generic (SIZE : positive := 22);
port(
CLK : in std_logic;
RESET : in std_logic;
ONESHOT_IN : in std_logic;
ONESHOT_OUT : out std_logic );
end oneshot;
architecture rtl of oneshot is
signal COUNTER : unsigned(SIZE-1 downto 0);
signal ONES : unsigned(SIZE-1 downto 0);
signal LOCK : std_logic;
begin
ONES <= (others=>'1');
process(CLK)
begin
if rising_edge(CLK) then
if RESET = '1' then
LOCK <= '0';
COUNTER <= (others=>'0');
else
if ONESHOT_IN = '1' then
LOCK <= '1';
end if;
if LOCK = '1' then
if COUNTER /= ONES then
COUNTER <= COUNTER + 1;
else
LOCK <= '0';
COUNTER <= (others=>'0');
end if;
end if;
end if;
end if;
end process;
ONESHOT_OUT <= LOCK;
end rtl;
|
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use ieee.numeric_std.all;
use ieee.std_logic_unsigned.all;
library work;
use work.zpu_config.all;
entity wbbootloadermux is
generic (
address_high: integer:=31;
address_low: integer:=2
);
port (
wb_clk_i: in std_logic;
wb_rst_i: in std_logic;
sel: in std_logic;
-- Master
m_wb_dat_o: out std_logic_vector(31 downto 0);
m_wb_dat_i: in std_logic_vector(31 downto 0);
m_wb_adr_i: in std_logic_vector(address_high downto address_low);
m_wb_sel_i: in std_logic_vector(3 downto 0);
m_wb_cti_i: in std_logic_vector(2 downto 0);
m_wb_we_i: in std_logic;
m_wb_cyc_i: in std_logic;
m_wb_stb_i: in std_logic;
m_wb_ack_o: out std_logic;
m_wb_stall_o: out std_logic;
-- Slave 0 signals
s0_wb_dat_i: in std_logic_vector(31 downto 0);
s0_wb_dat_o: out std_logic_vector(31 downto 0);
s0_wb_adr_o: out std_logic_vector(address_high downto address_low);
s0_wb_sel_o: out std_logic_vector(3 downto 0);
s0_wb_cti_o: out std_logic_vector(2 downto 0);
s0_wb_we_o: out std_logic;
s0_wb_cyc_o: out std_logic;
s0_wb_stb_o: out std_logic;
s0_wb_ack_i: in std_logic;
s0_wb_stall_i: in std_logic;
-- Slave 1 signals
s1_wb_dat_i: in std_logic_vector(31 downto 0);
s1_wb_dat_o: out std_logic_vector(31 downto 0);
s1_wb_adr_o: out std_logic_vector(11 downto 2);
s1_wb_sel_o: out std_logic_vector(3 downto 0);
s1_wb_cti_o: out std_logic_vector(2 downto 0);
s1_wb_we_o: out std_logic;
s1_wb_cyc_o: out std_logic;
s1_wb_stb_o: out std_logic;
s1_wb_ack_i: in std_logic;
s1_wb_stall_i: in std_logic
);
end entity wbbootloadermux;
architecture behave of wbbootloadermux is
signal select_zero: std_logic;
begin
select_zero<='0' when sel='1' else '1';
s0_wb_dat_o <= m_wb_dat_i;
s0_wb_adr_o <= m_wb_adr_i;
s0_wb_stb_o <= m_wb_stb_i;
s0_wb_we_o <= m_wb_we_i;
s0_wb_cti_o <= m_wb_cti_i;
s0_wb_sel_o <= m_wb_sel_i;
s1_wb_dat_o <= m_wb_dat_i;
s1_wb_adr_o <= m_wb_adr_i(11 downto 2);
s1_wb_stb_o <= m_wb_stb_i;
s1_wb_we_o <= m_wb_we_i;
s1_wb_cti_o <= m_wb_cti_i;
s1_wb_sel_o <= m_wb_sel_i;
process(m_wb_cyc_i,select_zero)
begin
if m_wb_cyc_i='0' then
s0_wb_cyc_o<='0';
s1_wb_cyc_o<='0';
else
s0_wb_cyc_o<=select_zero;
s1_wb_cyc_o<=not select_zero;
end if;
end process;
process(select_zero,s1_wb_dat_i,s0_wb_dat_i,s0_wb_ack_i,s1_wb_ack_i,s0_wb_stall_i,s1_wb_stall_i)
begin
if select_zero='0' then
m_wb_dat_o<=s1_wb_dat_i;
m_wb_ack_o<=s1_wb_ack_i;
m_wb_stall_o<=s1_wb_stall_i;
else
m_wb_dat_o<=s0_wb_dat_i;
m_wb_ack_o<=s0_wb_ack_i;
m_wb_stall_o<=s0_wb_stall_i;
end if;
end process;
end behave;
|
-- Copyright (C) 1996 Morgan Kaufmann Publishers, Inc
-- This file is part of VESTs (Vhdl tESTs).
-- VESTs is free software; you can redistribute it and/or modify it
-- under the terms of the GNU General Public License as published by the
-- Free Software Foundation; either version 2 of the License, or (at
-- your option) any later version.
-- VESTs is distributed in the hope that it will be useful, but WITHOUT
-- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-- for more details.
-- You should have received a copy of the GNU General Public License
-- along with VESTs; if not, write to the Free Software Foundation,
-- Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-- ---------------------------------------------------------------------
--
-- $Id: ch_20_ch_20_09.vhd,v 1.1.1.1 2001-08-22 18:20:48 paw Exp $
-- $Revision: 1.1.1.1 $
--
-- ---------------------------------------------------------------------
package ch_20_09_a is
attribute attr : integer;
end package ch_20_09_a;
use work.ch_20_09_a.all;
entity e is
port ( p : in bit );
attribute attr of p : signal is 1;
end entity e;
architecture arch of e is
begin
assert false report integer'image(p'attr);
end architecture arch;
use work.ch_20_09_a.all;
entity ch_20_09 is
end entity ch_20_09;
architecture test of ch_20_09 is
signal s : bit;
attribute attr of s : signal is 2;
begin
-- code from book
c1 : entity work.e(arch)
port map ( p => s );
-- end code from book
end architecture test;
|
-- Copyright (C) 1996 Morgan Kaufmann Publishers, Inc
-- This file is part of VESTs (Vhdl tESTs).
-- VESTs is free software; you can redistribute it and/or modify it
-- under the terms of the GNU General Public License as published by the
-- Free Software Foundation; either version 2 of the License, or (at
-- your option) any later version.
-- VESTs is distributed in the hope that it will be useful, but WITHOUT
-- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-- for more details.
-- You should have received a copy of the GNU General Public License
-- along with VESTs; if not, write to the Free Software Foundation,
-- Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-- ---------------------------------------------------------------------
--
-- $Id: ch_20_ch_20_09.vhd,v 1.1.1.1 2001-08-22 18:20:48 paw Exp $
-- $Revision: 1.1.1.1 $
--
-- ---------------------------------------------------------------------
package ch_20_09_a is
attribute attr : integer;
end package ch_20_09_a;
use work.ch_20_09_a.all;
entity e is
port ( p : in bit );
attribute attr of p : signal is 1;
end entity e;
architecture arch of e is
begin
assert false report integer'image(p'attr);
end architecture arch;
use work.ch_20_09_a.all;
entity ch_20_09 is
end entity ch_20_09;
architecture test of ch_20_09 is
signal s : bit;
attribute attr of s : signal is 2;
begin
-- code from book
c1 : entity work.e(arch)
port map ( p => s );
-- end code from book
end architecture test;
|
-- Copyright (C) 1996 Morgan Kaufmann Publishers, Inc
-- This file is part of VESTs (Vhdl tESTs).
-- VESTs is free software; you can redistribute it and/or modify it
-- under the terms of the GNU General Public License as published by the
-- Free Software Foundation; either version 2 of the License, or (at
-- your option) any later version.
-- VESTs is distributed in the hope that it will be useful, but WITHOUT
-- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-- for more details.
-- You should have received a copy of the GNU General Public License
-- along with VESTs; if not, write to the Free Software Foundation,
-- Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-- ---------------------------------------------------------------------
--
-- $Id: ch_20_ch_20_09.vhd,v 1.1.1.1 2001-08-22 18:20:48 paw Exp $
-- $Revision: 1.1.1.1 $
--
-- ---------------------------------------------------------------------
package ch_20_09_a is
attribute attr : integer;
end package ch_20_09_a;
use work.ch_20_09_a.all;
entity e is
port ( p : in bit );
attribute attr of p : signal is 1;
end entity e;
architecture arch of e is
begin
assert false report integer'image(p'attr);
end architecture arch;
use work.ch_20_09_a.all;
entity ch_20_09 is
end entity ch_20_09;
architecture test of ch_20_09 is
signal s : bit;
attribute attr of s : signal is 2;
begin
-- code from book
c1 : entity work.e(arch)
port map ( p => s );
-- end code from book
end architecture test;
|
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
package aes_types is
-- matrix(column,row)
type matrix is array (integer range <>, integer range <>) of std_logic_vector(7 downto 0);
type generic_memory is array (integer range <>) of std_logic_vector(7 downto 0);
type matrix_128 is array (integer range <>) of matrix(3 downto 0, 3 downto 0);
constant Rcon_const : generic_memory(9 downto 0) := (
X"01", X"02", X"04", X"08", X"10", X"20", X"40", X"80", X"1b", X"36"
);
constant Sbox : generic_memory(255 downto 0) := (
X"16", X"bb", X"54", X"b0", X"0f", X"2d", X"99", X"41", X"68", X"42", X"e6", X"bf", X"0d", X"89", X"a1", X"8c",
X"df", X"28", X"55", X"ce", X"e9", X"87", X"1e", X"9b", X"94", X"8e", X"d9", X"69", X"11", X"98", X"f8", X"e1",
X"9e", X"1d", X"c1", X"86", X"b9", X"57", X"35", X"61", X"0e", X"f6", X"03", X"48", X"66", X"b5", X"3e", X"70",
X"8a", X"8b", X"bd", X"4b", X"1f", X"74", X"dd", X"e8", X"c6", X"b4", X"a6", X"1c", X"2e", X"25", X"78", X"ba",
X"08", X"ae", X"7a", X"65", X"ea", X"f4", X"56", X"6c", X"a9", X"4e", X"d5", X"8d", X"6d", X"37", X"c8", X"e7",
X"79", X"e4", X"95", X"91", X"62", X"ac", X"d3", X"c2", X"5c", X"24", X"06", X"49", X"0a", X"3a", X"32", X"e0",
X"db", X"0b", X"5e", X"de", X"14", X"b8", X"ee", X"46", X"88", X"90", X"2a", X"22", X"dc", X"4f", X"81", X"60",
X"73", X"19", X"5d", X"64", X"3d", X"7e", X"a7", X"c4", X"17", X"44", X"97", X"5f", X"ec", X"13", X"0c", X"cd",
X"d2", X"f3", X"ff", X"10", X"21", X"da", X"b6", X"bc", X"f5", X"38", X"9d", X"92", X"8f", X"40", X"a3", X"51",
X"a8", X"9f", X"3c", X"50", X"7f", X"02", X"f9", X"45", X"85", X"33", X"4d", X"43", X"fb", X"aa", X"ef", X"d0",
X"cf", X"58", X"4c", X"4a", X"39", X"be", X"cb", X"6a", X"5b", X"b1", X"fc", X"20", X"ed", X"00", X"d1", X"53",
X"84", X"2f", X"e3", X"29", X"b3", X"d6", X"3b", X"52", X"a0", X"5a", X"6e", X"1b", X"1a", X"2c", X"83", X"09",
X"75", X"b2", X"27", X"eb", X"e2", X"80", X"12", X"07", X"9a", X"05", X"96", X"18", X"c3", X"23", X"c7", X"04",
X"15", X"31", X"d8", X"71", X"f1", X"e5", X"a5", X"34", X"cc", X"f7", X"3f", X"36", X"26", X"93", X"fd", X"b7",
X"c0", X"72", X"a4", X"9c", X"af", X"a2", X"d4", X"ad", X"f0", X"47", X"59", X"fa", X"7d", X"c9", X"82", X"ca",
X"76", X"ab", X"d7", X"fe", X"2b", X"67", X"01", X"30", X"c5", X"6f", X"6b", X"f2", X"7b", X"77", X"7c", X"63"
);
function matrix2row(mat : in matrix; row : in integer) return generic_memory;
function matrix2column(mat : in matrix; column : in integer) return generic_memory;
function column2matrix(C0, C1, C2, C3 : in generic_memory) return matrix;
function column_modulo_mul(column : in generic_memory) return std_logic_vector;
function column_rotate(column : in generic_memory; rotation : in integer) return generic_memory;
function "XOR"(L, R : matrix) return matrix;
function "XOR"(L, R : generic_memory) return generic_memory;
end package aes_types;
package body aes_types is
function matrix2row(mat : in matrix; row : in integer) return generic_memory is
variable mem_out : generic_memory(3 downto 0);
begin
for I in 0 to 3 loop
mem_out(I) := mat(I, row);
end loop;
return mem_out;
end matrix2row;
function matrix2column(mat : in matrix; column : in integer) return generic_memory is
variable mem_out : generic_memory(3 downto 0);
begin
for I in 0 to 3 loop
mem_out(I) := mat(column, I);
end loop;
return mem_out;
end matrix2column;
function column2matrix(C0, C1, C2, C3 : in generic_memory) return matrix is
variable out_matrix : matrix(3 downto 0, 3 downto 0);
begin
for I in 0 to 3 loop
out_matrix(0, I) := C0(I);
end loop;
for I in 0 to 3 loop
out_matrix(1, I) := C1(I);
end loop;
for I in 0 to 3 loop
out_matrix(2, I) := C2(I);
end loop;
for I in 0 to 3 loop
out_matrix(3, I) := C3(I);
end loop;
return out_matrix;
end column2matrix;
function column_modulo_mul(column : in generic_memory) return std_logic_vector is
variable out_byte : std_logic_vector(7 downto 0);
begin
if (column(0)(7) = '1' XOR column(1)(7) = '1') then
out_byte := column(0)(6 downto 0) & '0' XOR column(1)(6 downto 0) & '0' XOR column(1) XOR column(2) XOR column(3) XOR x"1B";
else
out_byte := column(0)(6 downto 0) & '0' XOR column(1)(6 downto 0) & '0' XOR column(1) XOR column(2) XOR column(3);
end if;
return out_byte;
end column_modulo_mul;
function column_rotate(column : in generic_memory; rotation : in integer) return generic_memory is
variable out_column : generic_memory(3 downto 0);
begin
case rotation is
when 1 =>
out_column(0) := column(1);
out_column(1) := column(2);
out_column(2) := column(3);
out_column(3) := column(0);
when 2 =>
out_column(0) := column(2);
out_column(1) := column(3);
out_column(2) := column(0);
out_column(3) := column(1);
when 3 =>
out_column(3) := column(0);
out_column(2) := column(1);
out_column(1) := column(2);
out_column(0) := column(3);
when others =>
out_column := column;
end case;
return out_column;
end column_rotate;
function "XOR"(L, R : matrix) return matrix is
variable out_matrix : matrix(L'range(1), L'range(2));
begin
for I in L'range(1) loop
for J in L'range(2) loop
out_matrix(I, J) := L(I, J) XOR R(I, J);
end loop;
end loop;
return out_matrix;
end "XOR";
function "XOR"(L, R : generic_memory) return generic_memory is
variable out_memory : generic_memory(L'range);
begin
for I in L'range loop
out_memory(I) := L(I) XOR R(I);
end loop;
return out_memory;
end "XOR";
end package body aes_types;
|
library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_arith.all;
entity test is
end entity test;
architecture rtl of test is
type test_t is record
t1 : natural;
t2 : natural;
end record test_t;
constant C_TEST_T : test_t :=
(
t1 => 1,
t2 => 2);
constant C_TEST : std_ulogic_vector(0 to 7) :=
(C_TEST_T.t1 => '1', others => '0');
begin
end architecture rtl;
|
library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_arith.all;
entity test is
end entity test;
architecture rtl of test is
type test_t is record
t1 : natural;
t2 : natural;
end record test_t;
constant C_TEST_T : test_t :=
(
t1 => 1,
t2 => 2);
constant C_TEST : std_ulogic_vector(0 to 7) :=
(C_TEST_T.t1 => '1', others => '0');
begin
end architecture rtl;
|
--------------------------------------------------------------------------------
-- (c) Copyright 2011 - 2013 Xilinx, Inc. All rights reserved.
--
-- This file contains confidential and proprietary information
-- of Xilinx, Inc. and is protected under U.S. and
-- international copyright and other intellectual property
-- laws.
--
-- DISCLAIMER
-- This disclaimer is not a license and does not grant any
-- rights to the materials distributed herewith. Except as
-- otherwise provided in a valid license issued to you by
-- Xilinx, and to the maximum extent permitted by applicable
-- law: (1) THESE MATERIALS ARE MADE AVAILABLE "AS IS" AND
-- WITH ALL FAULTS, AND XILINX HEREBY DISCLAIMS ALL WARRANTIES
-- AND CONDITIONS, EXPRESS, IMPLIED, OR STATUTORY, INCLUDING
-- BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, NON-
-- INFRINGEMENT, OR FITNESS FOR ANY PARTICULAR PURPOSE; and
-- (2) Xilinx shall not be liable (whether in contract or tort,
-- including negligence, or under any other theory of
-- liability) for any loss or damage of any kind or nature
-- related to, arising under or in connection with these
-- materials, including for any direct, or any indirect,
-- special, incidental, or consequential loss or damage
-- (including loss of data, profits, goodwill, or any type of
-- loss or damage suffered as a result of any action brought
-- by a third party) even if such damage or loss was
-- reasonably foreseeable or Xilinx had been advised of the
-- possibility of the same.
--
-- CRITICAL APPLICATIONS
-- Xilinx products are not designed or intended to be fail-
-- safe, or for use in any application requiring fail-safe
-- performance, such as life-support or safety devices or
-- systems, Class III medical devices, nuclear facilities,
-- applications related to the deployment of airbags, or any
-- other applications that could lead to death, personal
-- injury, or severe property or environmental damage
-- (individually and collectively, "Critical
-- Applications"). Customer assumes the sole risk and
-- liability of any use of Xilinx products in Critical
-- Applications, subject only to applicable laws and
-- regulations governing limitations on product liability.
--
-- THIS COPYRIGHT NOTICE AND DISCLAIMER MUST BE RETAINED AS
-- PART OF THIS FILE AT ALL TIMES.
--------------------------------------------------------------------------------
-- Description:
-- This is an example testbench for the CORDIC IP core.
-- The testbench has been generated by Vivado to accompany the IP core
-- instance you have generated.
--
-- This testbench is for demonstration purposes only. See note below for
-- instructions on how to use it with your core.
--
-- See the CORDIC product guide for further information
-- about this core.
--
--------------------------------------------------------------------------------
-- Using this testbench
--
-- This testbench instantiates your generated CORDIC core
-- instance named "sqrt".
--
-- Use Vivado's Run Simulation flow to run this testbench. See the Vivado
-- documentation for details.
--------------------------------------------------------------------------------
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.math_real.all;
entity tb_sqrt is
end tb_sqrt;
architecture tb of tb_sqrt is
-----------------------------------------------------------------------
-- Timing constants
-----------------------------------------------------------------------
constant CLOCK_PERIOD : time := 100 ns;
constant T_HOLD : time := 10 ns;
constant T_STROBE : time := CLOCK_PERIOD - (1 ns);
constant TEST_CYCLES : integer := 3000;
constant PHASE_CYCLES : integer := 1000;
-----------------------------------------------------------------------
-- DUT input signals
-----------------------------------------------------------------------
-- General inputs
signal aclk : std_logic := '0'; -- the master clock
-- Slave channel CARTESIAN inputs
signal s_axis_cartesian_tvalid : std_logic := '0'; -- TVALID for channel S_AXIS_CARTESIAN
signal s_axis_cartesian_tdata : std_logic_vector(15 downto 0) := (others => 'X'); -- TDATA for channel S_AXIS_CARTESIAN
-- Slave channel PHASE inputs
signal s_axis_phase_tvalid : std_logic := '0'; -- TVALID for channel S_AXIS_PHASE
signal s_axis_phase_tdata : std_logic_vector(15 downto 0) := (others => 'X'); -- TDATA for channel S_AXIS_PHASE
-----------------------------------------------------------------------
-- DUT output signals
-----------------------------------------------------------------------
-- Master channel DOUT outputs
signal m_axis_dout_tvalid : std_logic := '0'; -- TVALID for channel M_AXIS_DOUT
signal m_axis_dout_tdata : std_logic_vector(15 downto 0) := (others => '0'); -- TDATA for channel M_AXIS_DOUT
-----------------------------------------------------------------------
-- Aliases for AXI channel TDATA fields
-- These are a convenience for viewing data in a simulator waveform viewer.
-- If using ModelSim or Questa, add "-voptargs=+acc=n" to the vsim command
-- to prevent the simulator optimizing away these signals.
-----------------------------------------------------------------------
signal s_axis_cartesian_tdata_real : std_logic_vector(15 downto 0) := (others => '0');
signal s_axis_cartesian_tdata_imag : std_logic_vector(15 downto 0) := (others => '0');
signal s_axis_phase_tdata_real : std_logic_vector(15 downto 0) := (others => '0');
signal m_axis_dout_tdata_real : std_logic_vector(15 downto 0) := (others => '0');
signal m_axis_dout_tdata_imag : std_logic_vector(15 downto 0) := (others => '0');
signal m_axis_dout_tdata_phase : std_logic_vector(15 downto 0) := (others => '0');
-----------------------------------------------------------------------
-- Testbench signals
-----------------------------------------------------------------------
signal cycles : integer := 0; -- Clock cycle counter
-----------------------------------------------------------------------
-- Constants, types and functions to create input data
-- The CORDIC is fed two sinusoids exp(+/-jwt) of different frequencies and amplitudes:
-- channel CARTESIAN: exp(+jwt), frequency = clock / 30,
-- channel PHASE: exp(-jwt), frequency = clock / 32,
-----------------------------------------------------------------------
constant IP_CARTESIAN_DEPTH : integer := 30;
constant IP_CARTESIAN_WIDTH : integer := 16;
constant IP_CARTESIAN_SHIFT : integer := 3; -- bit shift for amplitude
constant IP_PHASE_DEPTH : integer := 32;
constant IP_PHASE_WIDTH : integer := 16;
constant IP_PHASE_SHIFT : integer := 0; -- no bit shift, max amplitude
type T_IP_INT_ENTRY is record
re : integer;
im : integer;
end record;
type T_IP_CARTESIAN_ENTRY is record
re : std_logic_vector(IP_CARTESIAN_WIDTH-1 downto 0);
im : std_logic_vector(IP_CARTESIAN_WIDTH-1 downto 0);
end record;
type T_IP_PHASE_ENTRY is record
re : std_logic_vector(IP_PHASE_WIDTH-1 downto 0);
end record;
type T_IP_CARTESIAN_TABLE is array (0 to IP_CARTESIAN_DEPTH-1) of T_IP_CARTESIAN_ENTRY;
type T_IP_PHASE_TABLE is array (0 to IP_PHASE_DEPTH-1) of T_IP_PHASE_ENTRY;
-- Common function to calculate sine and cosine values
function create_ip_entry(index, depth, width : integer) return T_IP_INT_ENTRY is
variable result : T_IP_INT_ENTRY;
variable theta : real;
variable limited_width : integer := width - 2;
begin
if limited_width > 30 then
limited_width := 30; --avoid integer overflow
end if;
theta := real(index) / real(depth) * 2.0 * MATH_PI;
result.re := integer(round(cos(theta) * real(2**limited_width)));
result.im := integer(round(sin(theta) * real(2**limited_width)));
return result;
end function create_ip_entry;
-- Use separate functions to calculate channel S_AXIS_CARTESIAN and S_AXIS_PHASE sinusoids as they return different types
function create_ip_cartesian_table return T_IP_CARTESIAN_TABLE is
variable result : T_IP_CARTESIAN_TABLE;
variable entry_int : T_IP_INT_ENTRY;
begin
for i in 0 to IP_CARTESIAN_DEPTH-1 loop
entry_int := create_ip_entry(i, IP_CARTESIAN_DEPTH, IP_CARTESIAN_WIDTH - IP_CARTESIAN_SHIFT);
result(i).re := std_logic_vector(to_signed(entry_int.re, IP_CARTESIAN_WIDTH));
result(i).im := std_logic_vector(to_signed(entry_int.im, IP_CARTESIAN_WIDTH));
end loop;
return result;
end function create_ip_cartesian_table;
function create_ip_phase_table return T_IP_PHASE_TABLE is
variable result : T_IP_PHASE_TABLE;
variable entry_int : T_IP_INT_ENTRY;
begin
for i in 0 to IP_PHASE_DEPTH-1 loop
entry_int := create_ip_entry(IP_PHASE_DEPTH-1-i, IP_PHASE_DEPTH, IP_PHASE_WIDTH - IP_PHASE_SHIFT); -- note rotation direction
result(i).re := std_logic_vector(to_signed(entry_int.re, IP_PHASE_WIDTH));
end loop;
return result;
end function create_ip_phase_table;
-- Call the functions to create the data
constant IP_CARTESIAN_DATA : T_IP_CARTESIAN_TABLE := create_ip_cartesian_table;
constant IP_PHASE_DATA : T_IP_PHASE_TABLE := create_ip_phase_table;
begin
-----------------------------------------------------------------------
-- Instantiate the DUT
-----------------------------------------------------------------------
dut : entity work.sqrt
port map (
aclk => aclk,
s_axis_cartesian_tvalid => s_axis_cartesian_tvalid,
s_axis_cartesian_tdata => s_axis_cartesian_tdata,
m_axis_dout_tvalid => m_axis_dout_tvalid,
m_axis_dout_tdata => m_axis_dout_tdata
);
-----------------------------------------------------------------------
-- Generate clock
-----------------------------------------------------------------------
clock_gen : process
begin
aclk <= '0';
wait for CLOCK_PERIOD;
loop
cycles <= cycles + 1;
aclk <= '0';
wait for CLOCK_PERIOD/2;
aclk <= '1';
wait for CLOCK_PERIOD/2;
if cycles >= TEST_CYCLES then
report "Not a real failure. Simulation finished successfully. Test completed successfully" severity failure;
wait;
end if;
end loop;
end process clock_gen;
-----------------------------------------------------------------------
-- Generate inputs
-----------------------------------------------------------------------
stimuli : process
variable ip_cartesian_index : integer := 0;
variable ip_phase_index : integer := 0;
variable cartesian_tvalid_nxt : std_logic := '0';
variable phase_tvalid_nxt : std_logic := '0';
variable phase2_cycles : integer := 1;
variable phase2_count : integer := 0;
constant PHASE2_LIMIT : integer := 30;
begin
-- Test is stopped in clock_gen process, use endless loop here
loop
-- Drive inputs T_HOLD time after rising edge of clock
wait until rising_edge(aclk);
wait for T_HOLD;
-- Drive AXI TVALID signals to demonstrate different types of operation
case cycles is -- do different types of operation at different phases of the test
when 0 to PHASE_CYCLES * 1 - 1 =>
-- Phase 1: inputs always valid, no missing input data
cartesian_tvalid_nxt := '1';
phase_tvalid_nxt := '1';
when PHASE_CYCLES * 1 to PHASE_CYCLES * 2 - 1 =>
-- Phase 2: deprive channel S_AXIS_CARTESIAN of valid transactions at an increasing rate
phase_tvalid_nxt := '1';
if phase2_count < phase2_cycles then
cartesian_tvalid_nxt := '0';
else
cartesian_tvalid_nxt := '1';
end if;
phase2_count := phase2_count + 1;
if phase2_count >= PHASE2_LIMIT then
phase2_count := 0;
phase2_cycles := phase2_cycles + 1;
end if;
when PHASE_CYCLES * 2 to PHASE_CYCLES * 3 - 1 =>
-- Phase 3: deprive channel S_AXIS_CARTESIAN of 1 out of 2 transactions, and channel S_AXIS_PHASE of 1 out of 3 transactions
if cycles mod 2 = 0 then
cartesian_tvalid_nxt := '0';
else
cartesian_tvalid_nxt := '1';
end if;
if cycles mod 3 = 0 then
phase_tvalid_nxt := '0';
else
phase_tvalid_nxt := '1';
end if;
when others =>
-- Test will stop imminently - do nothing
null;
end case;
-- Drive handshake signals with local variable values
s_axis_cartesian_tvalid <= cartesian_tvalid_nxt;
s_axis_phase_tvalid <= phase_tvalid_nxt;
-- Drive AXI slave channel CARTESIAN payload
-- Drive 'X's on payload signals when not valid
if cartesian_tvalid_nxt /= '1' then
s_axis_cartesian_tdata <= (others => 'X');
else
-- TDATA: Real and imaginary components are each 16 bits wide and byte-aligned at their LSBs
s_axis_cartesian_tdata(15 downto 0) <= IP_CARTESIAN_DATA(ip_cartesian_index).re;
end if;
-- Drive AXI slave channel PHASE payload
-- Drive 'X's on payload signals when not valid
if phase_tvalid_nxt /= '1' then
s_axis_phase_tdata <= (others => 'X');
else
-- TDATA: Real component is 16 bits wide and byte-aligned at its LSBs
s_axis_phase_tdata(15 downto 0) <= IP_PHASE_DATA(ip_phase_index).re;
end if;
-- Increment input data indices
if cartesian_tvalid_nxt = '1' then
ip_cartesian_index := ip_cartesian_index + 1;
if ip_cartesian_index = IP_CARTESIAN_DEPTH then
ip_cartesian_index := 0;
end if;
end if;
if phase_tvalid_nxt = '1' then
ip_phase_index := ip_phase_index + 1;
if ip_phase_index = IP_PHASE_DEPTH then
ip_phase_index := 0;
end if;
end if;
end loop;
end process stimuli;
-----------------------------------------------------------------------
-- Check outputs
-----------------------------------------------------------------------
check_outputs : process
variable check_ok : boolean := true;
begin
-- Check outputs T_STROBE time after rising edge of clock
wait until rising_edge(aclk);
wait for T_STROBE;
-- Do not check the output payload values, as this requires the behavioral model
-- which would make this demonstration testbench unwieldy.
-- Instead, check the protocol of the DOUT channel:
-- check that the payload is valid (not X) when TVALID is high
if m_axis_dout_tvalid = '1' then
if is_x(m_axis_dout_tdata) then
report "ERROR: m_axis_dout_tdata is invalid when m_axis_dout_tvalid is high" severity error;
check_ok := false;
end if;
end if;
assert check_ok
report "ERROR: terminating test with failures." severity failure;
end process check_outputs;
-----------------------------------------------------------------------
-- Assign TDATA fields to aliases, for easy simulator waveform viewing
-----------------------------------------------------------------------
s_axis_cartesian_tdata_real <= s_axis_cartesian_tdata(15 downto 0);
m_axis_dout_tdata_real <= m_axis_dout_tdata(15 downto 0);
end tb;
|
LIBRARY ieee;
USE ieee.std_logic_1164.all;
USE ieee.std_logic_unsigned.all;
USE ieee.std_logic_arith.all;
--***************************************************
--*** ***
--*** DOUBLE PRECISION DIVIDER - OUTPUT STAGE ***
--*** ***
--*** DP_DIVNORND.VHD ***
--*** ***
--*** Function: Output Stage, No Rounding ***
--*** ***
--*** 31/01/08 ML ***
--*** ***
--*** (c) 2008 Altera Corporation ***
--*** ***
--*** Change History ***
--*** ***
--*** ***
--*** ***
--*** ***
--*** ***
--***************************************************
--***************************************************
--*** Notes: Latency = 1 ***
--***************************************************
ENTITY dp_divnornd IS
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
signin : IN STD_LOGIC;
exponentdiv : IN STD_LOGIC_VECTOR (13 DOWNTO 1);
mantissadiv : IN STD_LOGIC_VECTOR (53 DOWNTO 1); -- includes roundbit
nanin : IN STD_LOGIC;
dividebyzeroin : IN STD_LOGIC;
signout : OUT STD_LOGIC;
exponentout : OUT STD_LOGIC_VECTOR (11 DOWNTO 1);
mantissaout : OUT STD_LOGIC_VECTOR (52 DOWNTO 1);
--------------------------------------------------
nanout : OUT STD_LOGIC;
invalidout : OUT STD_LOGIC;
dividebyzeroout : OUT STD_LOGIC
);
END dp_divnornd;
ARCHITECTURE rtl OF dp_divnornd IS
constant expwidth : positive := 11;
constant manwidth : positive := 52;
type exponentfftype IS ARRAY (2 DOWNTO 1) OF STD_LOGIC_VECTOR (expwidth DOWNTO 1);
signal zerovec : STD_LOGIC_VECTOR (manwidth-1 DOWNTO 1);
signal signff : STD_LOGIC;
signal nanff : STD_LOGIC;
signal dividebyzeroff : STD_LOGIC;
signal mantissaff : STD_LOGIC_VECTOR (manwidth DOWNTO 1);
signal exponentff : STD_LOGIC_VECTOR (expwidth+2 DOWNTO 1);
signal infinitygen : STD_LOGIC_VECTOR (expwidth+1 DOWNTO 1);
signal zerogen : STD_LOGIC_VECTOR (expwidth+1 DOWNTO 1);
signal setmanzero, setmanmax : STD_LOGIC;
signal setexpzero, setexpmax : STD_LOGIC;
BEGIN
gzv: FOR k IN 1 TO manwidth-1 GENERATE
zerovec(k) <= '0';
END GENERATE;
pra: PROCESS (sysclk,reset)
BEGIN
IF (reset = '1') THEN
signff <= '0';
nanff <= '0';
dividebyzeroff <= '0';
FOR k IN 1 TO manwidth LOOP
mantissaff(k) <= '0';
END LOOP;
FOR k IN 1 TO expwidth LOOP
exponentff(k) <= '0';
END LOOP;
ELSIF (rising_edge(sysclk)) THEN
IF(enable = '1') THEN
signff <= signin;
nanff <= nanin;
dividebyzeroff <= dividebyzeroin;
-- nan takes precedence (set max)
-- nan takes precedence (set max)
FOR k IN 1 TO manwidth LOOP
mantissaff(k) <= (mantissadiv(k+1) AND setmanzero) OR setmanmax;
END LOOP;
FOR k IN 1 TO expwidth LOOP
exponentff(k) <= (exponentdiv(k) AND setexpzero) OR setexpmax;
END LOOP;
END IF;
END IF;
END PROCESS;
--**********************************
--*** CHECK GENERATED CONDITIONS ***
--**********************************
-- infinity if exponent >= 255
infinitygen(1) <= exponentdiv(1);
gia: FOR k IN 2 TO expwidth GENERATE
infinitygen(k) <= infinitygen(k-1) AND exponentdiv(k);
END GENERATE;
infinitygen(expwidth+1) <= infinitygen(expwidth) OR
(exponentdiv(expwidth+1) AND
NOT(exponentdiv(expwidth+2))); -- ;1' if infinity
-- zero if exponent <= 0
zerogen(1) <= exponentdiv(1);
gza: FOR k IN 2 TO expwidth GENERATE
zerogen(k) <= zerogen(k-1) OR exponentdiv(k);
END GENERATE;
zerogen(expwidth+1) <= zerogen(expwidth) AND
NOT(exponentdiv(expwidth+2)); -- '0' if zero
-- set mantissa to 0 when infinity or zero condition
setmanzero <= NOT(infinitygen(expwidth+1)) AND zerogen(expwidth+1) AND NOT(dividebyzeroin);
-- setmantissa to "11..11" when nan
setmanmax <= nanin;
-- set exponent to 0 when zero condition
setexpzero <= zerogen(expwidth+1);
-- set exponent to "11..11" when nan, infinity, or divide by 0
setexpmax <= nanin OR infinitygen(expwidth+1) OR dividebyzeroin;
--***************
--*** OUTPUTS ***
--***************
signout <= signff;
mantissaout <= mantissaff;
exponentout <= exponentff(expwidth DOWNTO 1);
-----------------------------------------------
nanout <= nanff;
invalidout <= nanff;
dividebyzeroout <= dividebyzeroff;
END rtl;
|
LIBRARY ieee;
USE ieee.std_logic_1164.all;
USE ieee.std_logic_unsigned.all;
USE ieee.std_logic_arith.all;
--***************************************************
--*** ***
--*** DOUBLE PRECISION DIVIDER - OUTPUT STAGE ***
--*** ***
--*** DP_DIVNORND.VHD ***
--*** ***
--*** Function: Output Stage, No Rounding ***
--*** ***
--*** 31/01/08 ML ***
--*** ***
--*** (c) 2008 Altera Corporation ***
--*** ***
--*** Change History ***
--*** ***
--*** ***
--*** ***
--*** ***
--*** ***
--***************************************************
--***************************************************
--*** Notes: Latency = 1 ***
--***************************************************
ENTITY dp_divnornd IS
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
signin : IN STD_LOGIC;
exponentdiv : IN STD_LOGIC_VECTOR (13 DOWNTO 1);
mantissadiv : IN STD_LOGIC_VECTOR (53 DOWNTO 1); -- includes roundbit
nanin : IN STD_LOGIC;
dividebyzeroin : IN STD_LOGIC;
signout : OUT STD_LOGIC;
exponentout : OUT STD_LOGIC_VECTOR (11 DOWNTO 1);
mantissaout : OUT STD_LOGIC_VECTOR (52 DOWNTO 1);
--------------------------------------------------
nanout : OUT STD_LOGIC;
invalidout : OUT STD_LOGIC;
dividebyzeroout : OUT STD_LOGIC
);
END dp_divnornd;
ARCHITECTURE rtl OF dp_divnornd IS
constant expwidth : positive := 11;
constant manwidth : positive := 52;
type exponentfftype IS ARRAY (2 DOWNTO 1) OF STD_LOGIC_VECTOR (expwidth DOWNTO 1);
signal zerovec : STD_LOGIC_VECTOR (manwidth-1 DOWNTO 1);
signal signff : STD_LOGIC;
signal nanff : STD_LOGIC;
signal dividebyzeroff : STD_LOGIC;
signal mantissaff : STD_LOGIC_VECTOR (manwidth DOWNTO 1);
signal exponentff : STD_LOGIC_VECTOR (expwidth+2 DOWNTO 1);
signal infinitygen : STD_LOGIC_VECTOR (expwidth+1 DOWNTO 1);
signal zerogen : STD_LOGIC_VECTOR (expwidth+1 DOWNTO 1);
signal setmanzero, setmanmax : STD_LOGIC;
signal setexpzero, setexpmax : STD_LOGIC;
BEGIN
gzv: FOR k IN 1 TO manwidth-1 GENERATE
zerovec(k) <= '0';
END GENERATE;
pra: PROCESS (sysclk,reset)
BEGIN
IF (reset = '1') THEN
signff <= '0';
nanff <= '0';
dividebyzeroff <= '0';
FOR k IN 1 TO manwidth LOOP
mantissaff(k) <= '0';
END LOOP;
FOR k IN 1 TO expwidth LOOP
exponentff(k) <= '0';
END LOOP;
ELSIF (rising_edge(sysclk)) THEN
IF(enable = '1') THEN
signff <= signin;
nanff <= nanin;
dividebyzeroff <= dividebyzeroin;
-- nan takes precedence (set max)
-- nan takes precedence (set max)
FOR k IN 1 TO manwidth LOOP
mantissaff(k) <= (mantissadiv(k+1) AND setmanzero) OR setmanmax;
END LOOP;
FOR k IN 1 TO expwidth LOOP
exponentff(k) <= (exponentdiv(k) AND setexpzero) OR setexpmax;
END LOOP;
END IF;
END IF;
END PROCESS;
--**********************************
--*** CHECK GENERATED CONDITIONS ***
--**********************************
-- infinity if exponent >= 255
infinitygen(1) <= exponentdiv(1);
gia: FOR k IN 2 TO expwidth GENERATE
infinitygen(k) <= infinitygen(k-1) AND exponentdiv(k);
END GENERATE;
infinitygen(expwidth+1) <= infinitygen(expwidth) OR
(exponentdiv(expwidth+1) AND
NOT(exponentdiv(expwidth+2))); -- ;1' if infinity
-- zero if exponent <= 0
zerogen(1) <= exponentdiv(1);
gza: FOR k IN 2 TO expwidth GENERATE
zerogen(k) <= zerogen(k-1) OR exponentdiv(k);
END GENERATE;
zerogen(expwidth+1) <= zerogen(expwidth) AND
NOT(exponentdiv(expwidth+2)); -- '0' if zero
-- set mantissa to 0 when infinity or zero condition
setmanzero <= NOT(infinitygen(expwidth+1)) AND zerogen(expwidth+1) AND NOT(dividebyzeroin);
-- setmantissa to "11..11" when nan
setmanmax <= nanin;
-- set exponent to 0 when zero condition
setexpzero <= zerogen(expwidth+1);
-- set exponent to "11..11" when nan, infinity, or divide by 0
setexpmax <= nanin OR infinitygen(expwidth+1) OR dividebyzeroin;
--***************
--*** OUTPUTS ***
--***************
signout <= signff;
mantissaout <= mantissaff;
exponentout <= exponentff(expwidth DOWNTO 1);
-----------------------------------------------
nanout <= nanff;
invalidout <= nanff;
dividebyzeroout <= dividebyzeroff;
END rtl;
|
LIBRARY ieee;
USE ieee.std_logic_1164.all;
USE ieee.std_logic_unsigned.all;
USE ieee.std_logic_arith.all;
--***************************************************
--*** ***
--*** DOUBLE PRECISION DIVIDER - OUTPUT STAGE ***
--*** ***
--*** DP_DIVNORND.VHD ***
--*** ***
--*** Function: Output Stage, No Rounding ***
--*** ***
--*** 31/01/08 ML ***
--*** ***
--*** (c) 2008 Altera Corporation ***
--*** ***
--*** Change History ***
--*** ***
--*** ***
--*** ***
--*** ***
--*** ***
--***************************************************
--***************************************************
--*** Notes: Latency = 1 ***
--***************************************************
ENTITY dp_divnornd IS
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
signin : IN STD_LOGIC;
exponentdiv : IN STD_LOGIC_VECTOR (13 DOWNTO 1);
mantissadiv : IN STD_LOGIC_VECTOR (53 DOWNTO 1); -- includes roundbit
nanin : IN STD_LOGIC;
dividebyzeroin : IN STD_LOGIC;
signout : OUT STD_LOGIC;
exponentout : OUT STD_LOGIC_VECTOR (11 DOWNTO 1);
mantissaout : OUT STD_LOGIC_VECTOR (52 DOWNTO 1);
--------------------------------------------------
nanout : OUT STD_LOGIC;
invalidout : OUT STD_LOGIC;
dividebyzeroout : OUT STD_LOGIC
);
END dp_divnornd;
ARCHITECTURE rtl OF dp_divnornd IS
constant expwidth : positive := 11;
constant manwidth : positive := 52;
type exponentfftype IS ARRAY (2 DOWNTO 1) OF STD_LOGIC_VECTOR (expwidth DOWNTO 1);
signal zerovec : STD_LOGIC_VECTOR (manwidth-1 DOWNTO 1);
signal signff : STD_LOGIC;
signal nanff : STD_LOGIC;
signal dividebyzeroff : STD_LOGIC;
signal mantissaff : STD_LOGIC_VECTOR (manwidth DOWNTO 1);
signal exponentff : STD_LOGIC_VECTOR (expwidth+2 DOWNTO 1);
signal infinitygen : STD_LOGIC_VECTOR (expwidth+1 DOWNTO 1);
signal zerogen : STD_LOGIC_VECTOR (expwidth+1 DOWNTO 1);
signal setmanzero, setmanmax : STD_LOGIC;
signal setexpzero, setexpmax : STD_LOGIC;
BEGIN
gzv: FOR k IN 1 TO manwidth-1 GENERATE
zerovec(k) <= '0';
END GENERATE;
pra: PROCESS (sysclk,reset)
BEGIN
IF (reset = '1') THEN
signff <= '0';
nanff <= '0';
dividebyzeroff <= '0';
FOR k IN 1 TO manwidth LOOP
mantissaff(k) <= '0';
END LOOP;
FOR k IN 1 TO expwidth LOOP
exponentff(k) <= '0';
END LOOP;
ELSIF (rising_edge(sysclk)) THEN
IF(enable = '1') THEN
signff <= signin;
nanff <= nanin;
dividebyzeroff <= dividebyzeroin;
-- nan takes precedence (set max)
-- nan takes precedence (set max)
FOR k IN 1 TO manwidth LOOP
mantissaff(k) <= (mantissadiv(k+1) AND setmanzero) OR setmanmax;
END LOOP;
FOR k IN 1 TO expwidth LOOP
exponentff(k) <= (exponentdiv(k) AND setexpzero) OR setexpmax;
END LOOP;
END IF;
END IF;
END PROCESS;
--**********************************
--*** CHECK GENERATED CONDITIONS ***
--**********************************
-- infinity if exponent >= 255
infinitygen(1) <= exponentdiv(1);
gia: FOR k IN 2 TO expwidth GENERATE
infinitygen(k) <= infinitygen(k-1) AND exponentdiv(k);
END GENERATE;
infinitygen(expwidth+1) <= infinitygen(expwidth) OR
(exponentdiv(expwidth+1) AND
NOT(exponentdiv(expwidth+2))); -- ;1' if infinity
-- zero if exponent <= 0
zerogen(1) <= exponentdiv(1);
gza: FOR k IN 2 TO expwidth GENERATE
zerogen(k) <= zerogen(k-1) OR exponentdiv(k);
END GENERATE;
zerogen(expwidth+1) <= zerogen(expwidth) AND
NOT(exponentdiv(expwidth+2)); -- '0' if zero
-- set mantissa to 0 when infinity or zero condition
setmanzero <= NOT(infinitygen(expwidth+1)) AND zerogen(expwidth+1) AND NOT(dividebyzeroin);
-- setmantissa to "11..11" when nan
setmanmax <= nanin;
-- set exponent to 0 when zero condition
setexpzero <= zerogen(expwidth+1);
-- set exponent to "11..11" when nan, infinity, or divide by 0
setexpmax <= nanin OR infinitygen(expwidth+1) OR dividebyzeroin;
--***************
--*** OUTPUTS ***
--***************
signout <= signff;
mantissaout <= mantissaff;
exponentout <= exponentff(expwidth DOWNTO 1);
-----------------------------------------------
nanout <= nanff;
invalidout <= nanff;
dividebyzeroout <= dividebyzeroff;
END rtl;
|
LIBRARY ieee;
USE ieee.std_logic_1164.all;
USE ieee.std_logic_unsigned.all;
USE ieee.std_logic_arith.all;
--***************************************************
--*** ***
--*** DOUBLE PRECISION DIVIDER - OUTPUT STAGE ***
--*** ***
--*** DP_DIVNORND.VHD ***
--*** ***
--*** Function: Output Stage, No Rounding ***
--*** ***
--*** 31/01/08 ML ***
--*** ***
--*** (c) 2008 Altera Corporation ***
--*** ***
--*** Change History ***
--*** ***
--*** ***
--*** ***
--*** ***
--*** ***
--***************************************************
--***************************************************
--*** Notes: Latency = 1 ***
--***************************************************
ENTITY dp_divnornd IS
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
signin : IN STD_LOGIC;
exponentdiv : IN STD_LOGIC_VECTOR (13 DOWNTO 1);
mantissadiv : IN STD_LOGIC_VECTOR (53 DOWNTO 1); -- includes roundbit
nanin : IN STD_LOGIC;
dividebyzeroin : IN STD_LOGIC;
signout : OUT STD_LOGIC;
exponentout : OUT STD_LOGIC_VECTOR (11 DOWNTO 1);
mantissaout : OUT STD_LOGIC_VECTOR (52 DOWNTO 1);
--------------------------------------------------
nanout : OUT STD_LOGIC;
invalidout : OUT STD_LOGIC;
dividebyzeroout : OUT STD_LOGIC
);
END dp_divnornd;
ARCHITECTURE rtl OF dp_divnornd IS
constant expwidth : positive := 11;
constant manwidth : positive := 52;
type exponentfftype IS ARRAY (2 DOWNTO 1) OF STD_LOGIC_VECTOR (expwidth DOWNTO 1);
signal zerovec : STD_LOGIC_VECTOR (manwidth-1 DOWNTO 1);
signal signff : STD_LOGIC;
signal nanff : STD_LOGIC;
signal dividebyzeroff : STD_LOGIC;
signal mantissaff : STD_LOGIC_VECTOR (manwidth DOWNTO 1);
signal exponentff : STD_LOGIC_VECTOR (expwidth+2 DOWNTO 1);
signal infinitygen : STD_LOGIC_VECTOR (expwidth+1 DOWNTO 1);
signal zerogen : STD_LOGIC_VECTOR (expwidth+1 DOWNTO 1);
signal setmanzero, setmanmax : STD_LOGIC;
signal setexpzero, setexpmax : STD_LOGIC;
BEGIN
gzv: FOR k IN 1 TO manwidth-1 GENERATE
zerovec(k) <= '0';
END GENERATE;
pra: PROCESS (sysclk,reset)
BEGIN
IF (reset = '1') THEN
signff <= '0';
nanff <= '0';
dividebyzeroff <= '0';
FOR k IN 1 TO manwidth LOOP
mantissaff(k) <= '0';
END LOOP;
FOR k IN 1 TO expwidth LOOP
exponentff(k) <= '0';
END LOOP;
ELSIF (rising_edge(sysclk)) THEN
IF(enable = '1') THEN
signff <= signin;
nanff <= nanin;
dividebyzeroff <= dividebyzeroin;
-- nan takes precedence (set max)
-- nan takes precedence (set max)
FOR k IN 1 TO manwidth LOOP
mantissaff(k) <= (mantissadiv(k+1) AND setmanzero) OR setmanmax;
END LOOP;
FOR k IN 1 TO expwidth LOOP
exponentff(k) <= (exponentdiv(k) AND setexpzero) OR setexpmax;
END LOOP;
END IF;
END IF;
END PROCESS;
--**********************************
--*** CHECK GENERATED CONDITIONS ***
--**********************************
-- infinity if exponent >= 255
infinitygen(1) <= exponentdiv(1);
gia: FOR k IN 2 TO expwidth GENERATE
infinitygen(k) <= infinitygen(k-1) AND exponentdiv(k);
END GENERATE;
infinitygen(expwidth+1) <= infinitygen(expwidth) OR
(exponentdiv(expwidth+1) AND
NOT(exponentdiv(expwidth+2))); -- ;1' if infinity
-- zero if exponent <= 0
zerogen(1) <= exponentdiv(1);
gza: FOR k IN 2 TO expwidth GENERATE
zerogen(k) <= zerogen(k-1) OR exponentdiv(k);
END GENERATE;
zerogen(expwidth+1) <= zerogen(expwidth) AND
NOT(exponentdiv(expwidth+2)); -- '0' if zero
-- set mantissa to 0 when infinity or zero condition
setmanzero <= NOT(infinitygen(expwidth+1)) AND zerogen(expwidth+1) AND NOT(dividebyzeroin);
-- setmantissa to "11..11" when nan
setmanmax <= nanin;
-- set exponent to 0 when zero condition
setexpzero <= zerogen(expwidth+1);
-- set exponent to "11..11" when nan, infinity, or divide by 0
setexpmax <= nanin OR infinitygen(expwidth+1) OR dividebyzeroin;
--***************
--*** OUTPUTS ***
--***************
signout <= signff;
mantissaout <= mantissaff;
exponentout <= exponentff(expwidth DOWNTO 1);
-----------------------------------------------
nanout <= nanff;
invalidout <= nanff;
dividebyzeroout <= dividebyzeroff;
END rtl;
|
LIBRARY ieee;
USE ieee.std_logic_1164.all;
USE ieee.std_logic_unsigned.all;
USE ieee.std_logic_arith.all;
--***************************************************
--*** ***
--*** DOUBLE PRECISION DIVIDER - OUTPUT STAGE ***
--*** ***
--*** DP_DIVNORND.VHD ***
--*** ***
--*** Function: Output Stage, No Rounding ***
--*** ***
--*** 31/01/08 ML ***
--*** ***
--*** (c) 2008 Altera Corporation ***
--*** ***
--*** Change History ***
--*** ***
--*** ***
--*** ***
--*** ***
--*** ***
--***************************************************
--***************************************************
--*** Notes: Latency = 1 ***
--***************************************************
ENTITY dp_divnornd IS
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
signin : IN STD_LOGIC;
exponentdiv : IN STD_LOGIC_VECTOR (13 DOWNTO 1);
mantissadiv : IN STD_LOGIC_VECTOR (53 DOWNTO 1); -- includes roundbit
nanin : IN STD_LOGIC;
dividebyzeroin : IN STD_LOGIC;
signout : OUT STD_LOGIC;
exponentout : OUT STD_LOGIC_VECTOR (11 DOWNTO 1);
mantissaout : OUT STD_LOGIC_VECTOR (52 DOWNTO 1);
--------------------------------------------------
nanout : OUT STD_LOGIC;
invalidout : OUT STD_LOGIC;
dividebyzeroout : OUT STD_LOGIC
);
END dp_divnornd;
ARCHITECTURE rtl OF dp_divnornd IS
constant expwidth : positive := 11;
constant manwidth : positive := 52;
type exponentfftype IS ARRAY (2 DOWNTO 1) OF STD_LOGIC_VECTOR (expwidth DOWNTO 1);
signal zerovec : STD_LOGIC_VECTOR (manwidth-1 DOWNTO 1);
signal signff : STD_LOGIC;
signal nanff : STD_LOGIC;
signal dividebyzeroff : STD_LOGIC;
signal mantissaff : STD_LOGIC_VECTOR (manwidth DOWNTO 1);
signal exponentff : STD_LOGIC_VECTOR (expwidth+2 DOWNTO 1);
signal infinitygen : STD_LOGIC_VECTOR (expwidth+1 DOWNTO 1);
signal zerogen : STD_LOGIC_VECTOR (expwidth+1 DOWNTO 1);
signal setmanzero, setmanmax : STD_LOGIC;
signal setexpzero, setexpmax : STD_LOGIC;
BEGIN
gzv: FOR k IN 1 TO manwidth-1 GENERATE
zerovec(k) <= '0';
END GENERATE;
pra: PROCESS (sysclk,reset)
BEGIN
IF (reset = '1') THEN
signff <= '0';
nanff <= '0';
dividebyzeroff <= '0';
FOR k IN 1 TO manwidth LOOP
mantissaff(k) <= '0';
END LOOP;
FOR k IN 1 TO expwidth LOOP
exponentff(k) <= '0';
END LOOP;
ELSIF (rising_edge(sysclk)) THEN
IF(enable = '1') THEN
signff <= signin;
nanff <= nanin;
dividebyzeroff <= dividebyzeroin;
-- nan takes precedence (set max)
-- nan takes precedence (set max)
FOR k IN 1 TO manwidth LOOP
mantissaff(k) <= (mantissadiv(k+1) AND setmanzero) OR setmanmax;
END LOOP;
FOR k IN 1 TO expwidth LOOP
exponentff(k) <= (exponentdiv(k) AND setexpzero) OR setexpmax;
END LOOP;
END IF;
END IF;
END PROCESS;
--**********************************
--*** CHECK GENERATED CONDITIONS ***
--**********************************
-- infinity if exponent >= 255
infinitygen(1) <= exponentdiv(1);
gia: FOR k IN 2 TO expwidth GENERATE
infinitygen(k) <= infinitygen(k-1) AND exponentdiv(k);
END GENERATE;
infinitygen(expwidth+1) <= infinitygen(expwidth) OR
(exponentdiv(expwidth+1) AND
NOT(exponentdiv(expwidth+2))); -- ;1' if infinity
-- zero if exponent <= 0
zerogen(1) <= exponentdiv(1);
gza: FOR k IN 2 TO expwidth GENERATE
zerogen(k) <= zerogen(k-1) OR exponentdiv(k);
END GENERATE;
zerogen(expwidth+1) <= zerogen(expwidth) AND
NOT(exponentdiv(expwidth+2)); -- '0' if zero
-- set mantissa to 0 when infinity or zero condition
setmanzero <= NOT(infinitygen(expwidth+1)) AND zerogen(expwidth+1) AND NOT(dividebyzeroin);
-- setmantissa to "11..11" when nan
setmanmax <= nanin;
-- set exponent to 0 when zero condition
setexpzero <= zerogen(expwidth+1);
-- set exponent to "11..11" when nan, infinity, or divide by 0
setexpmax <= nanin OR infinitygen(expwidth+1) OR dividebyzeroin;
--***************
--*** OUTPUTS ***
--***************
signout <= signff;
mantissaout <= mantissaff;
exponentout <= exponentff(expwidth DOWNTO 1);
-----------------------------------------------
nanout <= nanff;
invalidout <= nanff;
dividebyzeroout <= dividebyzeroff;
END rtl;
|
LIBRARY ieee;
USE ieee.std_logic_1164.all;
USE ieee.std_logic_unsigned.all;
USE ieee.std_logic_arith.all;
--***************************************************
--*** ***
--*** DOUBLE PRECISION DIVIDER - OUTPUT STAGE ***
--*** ***
--*** DP_DIVNORND.VHD ***
--*** ***
--*** Function: Output Stage, No Rounding ***
--*** ***
--*** 31/01/08 ML ***
--*** ***
--*** (c) 2008 Altera Corporation ***
--*** ***
--*** Change History ***
--*** ***
--*** ***
--*** ***
--*** ***
--*** ***
--***************************************************
--***************************************************
--*** Notes: Latency = 1 ***
--***************************************************
ENTITY dp_divnornd IS
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
signin : IN STD_LOGIC;
exponentdiv : IN STD_LOGIC_VECTOR (13 DOWNTO 1);
mantissadiv : IN STD_LOGIC_VECTOR (53 DOWNTO 1); -- includes roundbit
nanin : IN STD_LOGIC;
dividebyzeroin : IN STD_LOGIC;
signout : OUT STD_LOGIC;
exponentout : OUT STD_LOGIC_VECTOR (11 DOWNTO 1);
mantissaout : OUT STD_LOGIC_VECTOR (52 DOWNTO 1);
--------------------------------------------------
nanout : OUT STD_LOGIC;
invalidout : OUT STD_LOGIC;
dividebyzeroout : OUT STD_LOGIC
);
END dp_divnornd;
ARCHITECTURE rtl OF dp_divnornd IS
constant expwidth : positive := 11;
constant manwidth : positive := 52;
type exponentfftype IS ARRAY (2 DOWNTO 1) OF STD_LOGIC_VECTOR (expwidth DOWNTO 1);
signal zerovec : STD_LOGIC_VECTOR (manwidth-1 DOWNTO 1);
signal signff : STD_LOGIC;
signal nanff : STD_LOGIC;
signal dividebyzeroff : STD_LOGIC;
signal mantissaff : STD_LOGIC_VECTOR (manwidth DOWNTO 1);
signal exponentff : STD_LOGIC_VECTOR (expwidth+2 DOWNTO 1);
signal infinitygen : STD_LOGIC_VECTOR (expwidth+1 DOWNTO 1);
signal zerogen : STD_LOGIC_VECTOR (expwidth+1 DOWNTO 1);
signal setmanzero, setmanmax : STD_LOGIC;
signal setexpzero, setexpmax : STD_LOGIC;
BEGIN
gzv: FOR k IN 1 TO manwidth-1 GENERATE
zerovec(k) <= '0';
END GENERATE;
pra: PROCESS (sysclk,reset)
BEGIN
IF (reset = '1') THEN
signff <= '0';
nanff <= '0';
dividebyzeroff <= '0';
FOR k IN 1 TO manwidth LOOP
mantissaff(k) <= '0';
END LOOP;
FOR k IN 1 TO expwidth LOOP
exponentff(k) <= '0';
END LOOP;
ELSIF (rising_edge(sysclk)) THEN
IF(enable = '1') THEN
signff <= signin;
nanff <= nanin;
dividebyzeroff <= dividebyzeroin;
-- nan takes precedence (set max)
-- nan takes precedence (set max)
FOR k IN 1 TO manwidth LOOP
mantissaff(k) <= (mantissadiv(k+1) AND setmanzero) OR setmanmax;
END LOOP;
FOR k IN 1 TO expwidth LOOP
exponentff(k) <= (exponentdiv(k) AND setexpzero) OR setexpmax;
END LOOP;
END IF;
END IF;
END PROCESS;
--**********************************
--*** CHECK GENERATED CONDITIONS ***
--**********************************
-- infinity if exponent >= 255
infinitygen(1) <= exponentdiv(1);
gia: FOR k IN 2 TO expwidth GENERATE
infinitygen(k) <= infinitygen(k-1) AND exponentdiv(k);
END GENERATE;
infinitygen(expwidth+1) <= infinitygen(expwidth) OR
(exponentdiv(expwidth+1) AND
NOT(exponentdiv(expwidth+2))); -- ;1' if infinity
-- zero if exponent <= 0
zerogen(1) <= exponentdiv(1);
gza: FOR k IN 2 TO expwidth GENERATE
zerogen(k) <= zerogen(k-1) OR exponentdiv(k);
END GENERATE;
zerogen(expwidth+1) <= zerogen(expwidth) AND
NOT(exponentdiv(expwidth+2)); -- '0' if zero
-- set mantissa to 0 when infinity or zero condition
setmanzero <= NOT(infinitygen(expwidth+1)) AND zerogen(expwidth+1) AND NOT(dividebyzeroin);
-- setmantissa to "11..11" when nan
setmanmax <= nanin;
-- set exponent to 0 when zero condition
setexpzero <= zerogen(expwidth+1);
-- set exponent to "11..11" when nan, infinity, or divide by 0
setexpmax <= nanin OR infinitygen(expwidth+1) OR dividebyzeroin;
--***************
--*** OUTPUTS ***
--***************
signout <= signff;
mantissaout <= mantissaff;
exponentout <= exponentff(expwidth DOWNTO 1);
-----------------------------------------------
nanout <= nanff;
invalidout <= nanff;
dividebyzeroout <= dividebyzeroff;
END rtl;
|
LIBRARY ieee;
USE ieee.std_logic_1164.all;
USE ieee.std_logic_unsigned.all;
USE ieee.std_logic_arith.all;
--***************************************************
--*** ***
--*** DOUBLE PRECISION DIVIDER - OUTPUT STAGE ***
--*** ***
--*** DP_DIVNORND.VHD ***
--*** ***
--*** Function: Output Stage, No Rounding ***
--*** ***
--*** 31/01/08 ML ***
--*** ***
--*** (c) 2008 Altera Corporation ***
--*** ***
--*** Change History ***
--*** ***
--*** ***
--*** ***
--*** ***
--*** ***
--***************************************************
--***************************************************
--*** Notes: Latency = 1 ***
--***************************************************
ENTITY dp_divnornd IS
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
signin : IN STD_LOGIC;
exponentdiv : IN STD_LOGIC_VECTOR (13 DOWNTO 1);
mantissadiv : IN STD_LOGIC_VECTOR (53 DOWNTO 1); -- includes roundbit
nanin : IN STD_LOGIC;
dividebyzeroin : IN STD_LOGIC;
signout : OUT STD_LOGIC;
exponentout : OUT STD_LOGIC_VECTOR (11 DOWNTO 1);
mantissaout : OUT STD_LOGIC_VECTOR (52 DOWNTO 1);
--------------------------------------------------
nanout : OUT STD_LOGIC;
invalidout : OUT STD_LOGIC;
dividebyzeroout : OUT STD_LOGIC
);
END dp_divnornd;
ARCHITECTURE rtl OF dp_divnornd IS
constant expwidth : positive := 11;
constant manwidth : positive := 52;
type exponentfftype IS ARRAY (2 DOWNTO 1) OF STD_LOGIC_VECTOR (expwidth DOWNTO 1);
signal zerovec : STD_LOGIC_VECTOR (manwidth-1 DOWNTO 1);
signal signff : STD_LOGIC;
signal nanff : STD_LOGIC;
signal dividebyzeroff : STD_LOGIC;
signal mantissaff : STD_LOGIC_VECTOR (manwidth DOWNTO 1);
signal exponentff : STD_LOGIC_VECTOR (expwidth+2 DOWNTO 1);
signal infinitygen : STD_LOGIC_VECTOR (expwidth+1 DOWNTO 1);
signal zerogen : STD_LOGIC_VECTOR (expwidth+1 DOWNTO 1);
signal setmanzero, setmanmax : STD_LOGIC;
signal setexpzero, setexpmax : STD_LOGIC;
BEGIN
gzv: FOR k IN 1 TO manwidth-1 GENERATE
zerovec(k) <= '0';
END GENERATE;
pra: PROCESS (sysclk,reset)
BEGIN
IF (reset = '1') THEN
signff <= '0';
nanff <= '0';
dividebyzeroff <= '0';
FOR k IN 1 TO manwidth LOOP
mantissaff(k) <= '0';
END LOOP;
FOR k IN 1 TO expwidth LOOP
exponentff(k) <= '0';
END LOOP;
ELSIF (rising_edge(sysclk)) THEN
IF(enable = '1') THEN
signff <= signin;
nanff <= nanin;
dividebyzeroff <= dividebyzeroin;
-- nan takes precedence (set max)
-- nan takes precedence (set max)
FOR k IN 1 TO manwidth LOOP
mantissaff(k) <= (mantissadiv(k+1) AND setmanzero) OR setmanmax;
END LOOP;
FOR k IN 1 TO expwidth LOOP
exponentff(k) <= (exponentdiv(k) AND setexpzero) OR setexpmax;
END LOOP;
END IF;
END IF;
END PROCESS;
--**********************************
--*** CHECK GENERATED CONDITIONS ***
--**********************************
-- infinity if exponent >= 255
infinitygen(1) <= exponentdiv(1);
gia: FOR k IN 2 TO expwidth GENERATE
infinitygen(k) <= infinitygen(k-1) AND exponentdiv(k);
END GENERATE;
infinitygen(expwidth+1) <= infinitygen(expwidth) OR
(exponentdiv(expwidth+1) AND
NOT(exponentdiv(expwidth+2))); -- ;1' if infinity
-- zero if exponent <= 0
zerogen(1) <= exponentdiv(1);
gza: FOR k IN 2 TO expwidth GENERATE
zerogen(k) <= zerogen(k-1) OR exponentdiv(k);
END GENERATE;
zerogen(expwidth+1) <= zerogen(expwidth) AND
NOT(exponentdiv(expwidth+2)); -- '0' if zero
-- set mantissa to 0 when infinity or zero condition
setmanzero <= NOT(infinitygen(expwidth+1)) AND zerogen(expwidth+1) AND NOT(dividebyzeroin);
-- setmantissa to "11..11" when nan
setmanmax <= nanin;
-- set exponent to 0 when zero condition
setexpzero <= zerogen(expwidth+1);
-- set exponent to "11..11" when nan, infinity, or divide by 0
setexpmax <= nanin OR infinitygen(expwidth+1) OR dividebyzeroin;
--***************
--*** OUTPUTS ***
--***************
signout <= signff;
mantissaout <= mantissaff;
exponentout <= exponentff(expwidth DOWNTO 1);
-----------------------------------------------
nanout <= nanff;
invalidout <= nanff;
dividebyzeroout <= dividebyzeroff;
END rtl;
|
LIBRARY ieee;
USE ieee.std_logic_1164.all;
USE ieee.std_logic_unsigned.all;
USE ieee.std_logic_arith.all;
--***************************************************
--*** ***
--*** DOUBLE PRECISION DIVIDER - OUTPUT STAGE ***
--*** ***
--*** DP_DIVNORND.VHD ***
--*** ***
--*** Function: Output Stage, No Rounding ***
--*** ***
--*** 31/01/08 ML ***
--*** ***
--*** (c) 2008 Altera Corporation ***
--*** ***
--*** Change History ***
--*** ***
--*** ***
--*** ***
--*** ***
--*** ***
--***************************************************
--***************************************************
--*** Notes: Latency = 1 ***
--***************************************************
ENTITY dp_divnornd IS
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
signin : IN STD_LOGIC;
exponentdiv : IN STD_LOGIC_VECTOR (13 DOWNTO 1);
mantissadiv : IN STD_LOGIC_VECTOR (53 DOWNTO 1); -- includes roundbit
nanin : IN STD_LOGIC;
dividebyzeroin : IN STD_LOGIC;
signout : OUT STD_LOGIC;
exponentout : OUT STD_LOGIC_VECTOR (11 DOWNTO 1);
mantissaout : OUT STD_LOGIC_VECTOR (52 DOWNTO 1);
--------------------------------------------------
nanout : OUT STD_LOGIC;
invalidout : OUT STD_LOGIC;
dividebyzeroout : OUT STD_LOGIC
);
END dp_divnornd;
ARCHITECTURE rtl OF dp_divnornd IS
constant expwidth : positive := 11;
constant manwidth : positive := 52;
type exponentfftype IS ARRAY (2 DOWNTO 1) OF STD_LOGIC_VECTOR (expwidth DOWNTO 1);
signal zerovec : STD_LOGIC_VECTOR (manwidth-1 DOWNTO 1);
signal signff : STD_LOGIC;
signal nanff : STD_LOGIC;
signal dividebyzeroff : STD_LOGIC;
signal mantissaff : STD_LOGIC_VECTOR (manwidth DOWNTO 1);
signal exponentff : STD_LOGIC_VECTOR (expwidth+2 DOWNTO 1);
signal infinitygen : STD_LOGIC_VECTOR (expwidth+1 DOWNTO 1);
signal zerogen : STD_LOGIC_VECTOR (expwidth+1 DOWNTO 1);
signal setmanzero, setmanmax : STD_LOGIC;
signal setexpzero, setexpmax : STD_LOGIC;
BEGIN
gzv: FOR k IN 1 TO manwidth-1 GENERATE
zerovec(k) <= '0';
END GENERATE;
pra: PROCESS (sysclk,reset)
BEGIN
IF (reset = '1') THEN
signff <= '0';
nanff <= '0';
dividebyzeroff <= '0';
FOR k IN 1 TO manwidth LOOP
mantissaff(k) <= '0';
END LOOP;
FOR k IN 1 TO expwidth LOOP
exponentff(k) <= '0';
END LOOP;
ELSIF (rising_edge(sysclk)) THEN
IF(enable = '1') THEN
signff <= signin;
nanff <= nanin;
dividebyzeroff <= dividebyzeroin;
-- nan takes precedence (set max)
-- nan takes precedence (set max)
FOR k IN 1 TO manwidth LOOP
mantissaff(k) <= (mantissadiv(k+1) AND setmanzero) OR setmanmax;
END LOOP;
FOR k IN 1 TO expwidth LOOP
exponentff(k) <= (exponentdiv(k) AND setexpzero) OR setexpmax;
END LOOP;
END IF;
END IF;
END PROCESS;
--**********************************
--*** CHECK GENERATED CONDITIONS ***
--**********************************
-- infinity if exponent >= 255
infinitygen(1) <= exponentdiv(1);
gia: FOR k IN 2 TO expwidth GENERATE
infinitygen(k) <= infinitygen(k-1) AND exponentdiv(k);
END GENERATE;
infinitygen(expwidth+1) <= infinitygen(expwidth) OR
(exponentdiv(expwidth+1) AND
NOT(exponentdiv(expwidth+2))); -- ;1' if infinity
-- zero if exponent <= 0
zerogen(1) <= exponentdiv(1);
gza: FOR k IN 2 TO expwidth GENERATE
zerogen(k) <= zerogen(k-1) OR exponentdiv(k);
END GENERATE;
zerogen(expwidth+1) <= zerogen(expwidth) AND
NOT(exponentdiv(expwidth+2)); -- '0' if zero
-- set mantissa to 0 when infinity or zero condition
setmanzero <= NOT(infinitygen(expwidth+1)) AND zerogen(expwidth+1) AND NOT(dividebyzeroin);
-- setmantissa to "11..11" when nan
setmanmax <= nanin;
-- set exponent to 0 when zero condition
setexpzero <= zerogen(expwidth+1);
-- set exponent to "11..11" when nan, infinity, or divide by 0
setexpmax <= nanin OR infinitygen(expwidth+1) OR dividebyzeroin;
--***************
--*** OUTPUTS ***
--***************
signout <= signff;
mantissaout <= mantissaff;
exponentout <= exponentff(expwidth DOWNTO 1);
-----------------------------------------------
nanout <= nanff;
invalidout <= nanff;
dividebyzeroout <= dividebyzeroff;
END rtl;
|
LIBRARY ieee;
USE ieee.std_logic_1164.all;
USE ieee.std_logic_unsigned.all;
USE ieee.std_logic_arith.all;
--***************************************************
--*** ***
--*** DOUBLE PRECISION DIVIDER - OUTPUT STAGE ***
--*** ***
--*** DP_DIVNORND.VHD ***
--*** ***
--*** Function: Output Stage, No Rounding ***
--*** ***
--*** 31/01/08 ML ***
--*** ***
--*** (c) 2008 Altera Corporation ***
--*** ***
--*** Change History ***
--*** ***
--*** ***
--*** ***
--*** ***
--*** ***
--***************************************************
--***************************************************
--*** Notes: Latency = 1 ***
--***************************************************
ENTITY dp_divnornd IS
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
signin : IN STD_LOGIC;
exponentdiv : IN STD_LOGIC_VECTOR (13 DOWNTO 1);
mantissadiv : IN STD_LOGIC_VECTOR (53 DOWNTO 1); -- includes roundbit
nanin : IN STD_LOGIC;
dividebyzeroin : IN STD_LOGIC;
signout : OUT STD_LOGIC;
exponentout : OUT STD_LOGIC_VECTOR (11 DOWNTO 1);
mantissaout : OUT STD_LOGIC_VECTOR (52 DOWNTO 1);
--------------------------------------------------
nanout : OUT STD_LOGIC;
invalidout : OUT STD_LOGIC;
dividebyzeroout : OUT STD_LOGIC
);
END dp_divnornd;
ARCHITECTURE rtl OF dp_divnornd IS
constant expwidth : positive := 11;
constant manwidth : positive := 52;
type exponentfftype IS ARRAY (2 DOWNTO 1) OF STD_LOGIC_VECTOR (expwidth DOWNTO 1);
signal zerovec : STD_LOGIC_VECTOR (manwidth-1 DOWNTO 1);
signal signff : STD_LOGIC;
signal nanff : STD_LOGIC;
signal dividebyzeroff : STD_LOGIC;
signal mantissaff : STD_LOGIC_VECTOR (manwidth DOWNTO 1);
signal exponentff : STD_LOGIC_VECTOR (expwidth+2 DOWNTO 1);
signal infinitygen : STD_LOGIC_VECTOR (expwidth+1 DOWNTO 1);
signal zerogen : STD_LOGIC_VECTOR (expwidth+1 DOWNTO 1);
signal setmanzero, setmanmax : STD_LOGIC;
signal setexpzero, setexpmax : STD_LOGIC;
BEGIN
gzv: FOR k IN 1 TO manwidth-1 GENERATE
zerovec(k) <= '0';
END GENERATE;
pra: PROCESS (sysclk,reset)
BEGIN
IF (reset = '1') THEN
signff <= '0';
nanff <= '0';
dividebyzeroff <= '0';
FOR k IN 1 TO manwidth LOOP
mantissaff(k) <= '0';
END LOOP;
FOR k IN 1 TO expwidth LOOP
exponentff(k) <= '0';
END LOOP;
ELSIF (rising_edge(sysclk)) THEN
IF(enable = '1') THEN
signff <= signin;
nanff <= nanin;
dividebyzeroff <= dividebyzeroin;
-- nan takes precedence (set max)
-- nan takes precedence (set max)
FOR k IN 1 TO manwidth LOOP
mantissaff(k) <= (mantissadiv(k+1) AND setmanzero) OR setmanmax;
END LOOP;
FOR k IN 1 TO expwidth LOOP
exponentff(k) <= (exponentdiv(k) AND setexpzero) OR setexpmax;
END LOOP;
END IF;
END IF;
END PROCESS;
--**********************************
--*** CHECK GENERATED CONDITIONS ***
--**********************************
-- infinity if exponent >= 255
infinitygen(1) <= exponentdiv(1);
gia: FOR k IN 2 TO expwidth GENERATE
infinitygen(k) <= infinitygen(k-1) AND exponentdiv(k);
END GENERATE;
infinitygen(expwidth+1) <= infinitygen(expwidth) OR
(exponentdiv(expwidth+1) AND
NOT(exponentdiv(expwidth+2))); -- ;1' if infinity
-- zero if exponent <= 0
zerogen(1) <= exponentdiv(1);
gza: FOR k IN 2 TO expwidth GENERATE
zerogen(k) <= zerogen(k-1) OR exponentdiv(k);
END GENERATE;
zerogen(expwidth+1) <= zerogen(expwidth) AND
NOT(exponentdiv(expwidth+2)); -- '0' if zero
-- set mantissa to 0 when infinity or zero condition
setmanzero <= NOT(infinitygen(expwidth+1)) AND zerogen(expwidth+1) AND NOT(dividebyzeroin);
-- setmantissa to "11..11" when nan
setmanmax <= nanin;
-- set exponent to 0 when zero condition
setexpzero <= zerogen(expwidth+1);
-- set exponent to "11..11" when nan, infinity, or divide by 0
setexpmax <= nanin OR infinitygen(expwidth+1) OR dividebyzeroin;
--***************
--*** OUTPUTS ***
--***************
signout <= signff;
mantissaout <= mantissaff;
exponentout <= exponentff(expwidth DOWNTO 1);
-----------------------------------------------
nanout <= nanff;
invalidout <= nanff;
dividebyzeroout <= dividebyzeroff;
END rtl;
|
LIBRARY ieee;
USE ieee.std_logic_1164.all;
USE ieee.std_logic_unsigned.all;
USE ieee.std_logic_arith.all;
--***************************************************
--*** ***
--*** DOUBLE PRECISION DIVIDER - OUTPUT STAGE ***
--*** ***
--*** DP_DIVNORND.VHD ***
--*** ***
--*** Function: Output Stage, No Rounding ***
--*** ***
--*** 31/01/08 ML ***
--*** ***
--*** (c) 2008 Altera Corporation ***
--*** ***
--*** Change History ***
--*** ***
--*** ***
--*** ***
--*** ***
--*** ***
--***************************************************
--***************************************************
--*** Notes: Latency = 1 ***
--***************************************************
ENTITY dp_divnornd IS
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
signin : IN STD_LOGIC;
exponentdiv : IN STD_LOGIC_VECTOR (13 DOWNTO 1);
mantissadiv : IN STD_LOGIC_VECTOR (53 DOWNTO 1); -- includes roundbit
nanin : IN STD_LOGIC;
dividebyzeroin : IN STD_LOGIC;
signout : OUT STD_LOGIC;
exponentout : OUT STD_LOGIC_VECTOR (11 DOWNTO 1);
mantissaout : OUT STD_LOGIC_VECTOR (52 DOWNTO 1);
--------------------------------------------------
nanout : OUT STD_LOGIC;
invalidout : OUT STD_LOGIC;
dividebyzeroout : OUT STD_LOGIC
);
END dp_divnornd;
ARCHITECTURE rtl OF dp_divnornd IS
constant expwidth : positive := 11;
constant manwidth : positive := 52;
type exponentfftype IS ARRAY (2 DOWNTO 1) OF STD_LOGIC_VECTOR (expwidth DOWNTO 1);
signal zerovec : STD_LOGIC_VECTOR (manwidth-1 DOWNTO 1);
signal signff : STD_LOGIC;
signal nanff : STD_LOGIC;
signal dividebyzeroff : STD_LOGIC;
signal mantissaff : STD_LOGIC_VECTOR (manwidth DOWNTO 1);
signal exponentff : STD_LOGIC_VECTOR (expwidth+2 DOWNTO 1);
signal infinitygen : STD_LOGIC_VECTOR (expwidth+1 DOWNTO 1);
signal zerogen : STD_LOGIC_VECTOR (expwidth+1 DOWNTO 1);
signal setmanzero, setmanmax : STD_LOGIC;
signal setexpzero, setexpmax : STD_LOGIC;
BEGIN
gzv: FOR k IN 1 TO manwidth-1 GENERATE
zerovec(k) <= '0';
END GENERATE;
pra: PROCESS (sysclk,reset)
BEGIN
IF (reset = '1') THEN
signff <= '0';
nanff <= '0';
dividebyzeroff <= '0';
FOR k IN 1 TO manwidth LOOP
mantissaff(k) <= '0';
END LOOP;
FOR k IN 1 TO expwidth LOOP
exponentff(k) <= '0';
END LOOP;
ELSIF (rising_edge(sysclk)) THEN
IF(enable = '1') THEN
signff <= signin;
nanff <= nanin;
dividebyzeroff <= dividebyzeroin;
-- nan takes precedence (set max)
-- nan takes precedence (set max)
FOR k IN 1 TO manwidth LOOP
mantissaff(k) <= (mantissadiv(k+1) AND setmanzero) OR setmanmax;
END LOOP;
FOR k IN 1 TO expwidth LOOP
exponentff(k) <= (exponentdiv(k) AND setexpzero) OR setexpmax;
END LOOP;
END IF;
END IF;
END PROCESS;
--**********************************
--*** CHECK GENERATED CONDITIONS ***
--**********************************
-- infinity if exponent >= 255
infinitygen(1) <= exponentdiv(1);
gia: FOR k IN 2 TO expwidth GENERATE
infinitygen(k) <= infinitygen(k-1) AND exponentdiv(k);
END GENERATE;
infinitygen(expwidth+1) <= infinitygen(expwidth) OR
(exponentdiv(expwidth+1) AND
NOT(exponentdiv(expwidth+2))); -- ;1' if infinity
-- zero if exponent <= 0
zerogen(1) <= exponentdiv(1);
gza: FOR k IN 2 TO expwidth GENERATE
zerogen(k) <= zerogen(k-1) OR exponentdiv(k);
END GENERATE;
zerogen(expwidth+1) <= zerogen(expwidth) AND
NOT(exponentdiv(expwidth+2)); -- '0' if zero
-- set mantissa to 0 when infinity or zero condition
setmanzero <= NOT(infinitygen(expwidth+1)) AND zerogen(expwidth+1) AND NOT(dividebyzeroin);
-- setmantissa to "11..11" when nan
setmanmax <= nanin;
-- set exponent to 0 when zero condition
setexpzero <= zerogen(expwidth+1);
-- set exponent to "11..11" when nan, infinity, or divide by 0
setexpmax <= nanin OR infinitygen(expwidth+1) OR dividebyzeroin;
--***************
--*** OUTPUTS ***
--***************
signout <= signff;
mantissaout <= mantissaff;
exponentout <= exponentff(expwidth DOWNTO 1);
-----------------------------------------------
nanout <= nanff;
invalidout <= nanff;
dividebyzeroout <= dividebyzeroff;
END rtl;
|
LIBRARY ieee;
USE ieee.std_logic_1164.all;
USE ieee.std_logic_signed.all;
USE ieee.std_logic_arith.all;
--***************************************************
--*** ***
--*** ALTERA FLOATING POINT DATAPATH COMPILER ***
--*** ***
--*** FP_MUL54US_38S.VHD ***
--*** ***
--*** Function: 4 pipeline stage unsigned 54 ***
--*** bit multiplier ***
--*** 38S: Stratix 3, 8 18x18, synthesizeable ***
--*** ***
--*** 20/08/09 ML ***
--*** ***
--*** (c) 2009 Altera Corporation ***
--*** ***
--*** Change History ***
--*** ***
--*** ***
--*** ***
--*** ***
--***************************************************
--***************************************************
--*** Notes: ***
--*** Build explicitlyout of two SIII/SIV ***
--*** DSP Blocks ***
--***************************************************
ENTITY fp_mul54us_38s IS
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
mulaa : IN STD_LOGIC_VECTOR (54 DOWNTO 1);
mulbb : IN STD_LOGIC_VECTOR (54 DOWNTO 1);
mulcc : OUT STD_LOGIC_VECTOR (72 DOWNTO 1)
);
END fp_mul54us_38s;
ARCHITECTURE rtl OF fp_mul54us_38s IS
signal zerovec : STD_LOGIC_VECTOR (36 DOWNTO 1);
signal multone : STD_LOGIC_VECTOR (72 DOWNTO 1);
signal multtwo : STD_LOGIC_VECTOR (55 DOWNTO 1);
signal addmultff : STD_LOGIC_VECTOR (72 DOWNTO 1);
component fp_mul3s
GENERIC (
widthaa : positive := 18;
widthbb : positive := 18;
widthcc : positive := 36
);
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
dataaa : IN STD_LOGIC_VECTOR (widthaa DOWNTO 1);
databb : IN STD_LOGIC_VECTOR (widthbb DOWNTO 1);
result : OUT STD_LOGIC_VECTOR (widthcc DOWNTO 1)
);
end component;
component fp_sum36x18
PORT (
aclr3 : IN STD_LOGIC := '0';
clock0 : IN STD_LOGIC := '1';
dataa_0 : IN STD_LOGIC_VECTOR (17 DOWNTO 0) := (OTHERS => '0');
dataa_1 : IN STD_LOGIC_VECTOR (17 DOWNTO 0) := (OTHERS => '0');
datab_0 : IN STD_LOGIC_VECTOR (35 DOWNTO 0) := (OTHERS => '0');
datab_1 : IN STD_LOGIC_VECTOR (35 DOWNTO 0) := (OTHERS => '0');
ena0 : IN STD_LOGIC := '1';
result : OUT STD_LOGIC_VECTOR (54 DOWNTO 0)
);
end component;
BEGIN
gza: FOR k IN 1 TO 36 GENERATE
zerovec(k) <= '0';
END GENERATE;
mone: fp_mul3s
GENERIC MAP (widthaa=>36,widthbb=>36,widthcc=>72)
PORT MAP (sysclk=>sysclk,reset=>reset,enable=>enable,
dataaa=>mulaa(54 DOWNTO 19),databb=>mulbb(54 DOWNTO 19),
result=>multone);
mtwo: fp_sum36x18
PORT MAP (aclr3=>reset,clock0=>sysclk,
dataa_0=>mulaa(18 DOWNTO 1),
dataa_1=>mulbb(18 DOWNTO 1),
datab_0=>mulbb(54 DOWNTO 19),
datab_1=>mulaa(54 DOWNTO 19),
ena0=>enable,
result=>multtwo);
paa: PROCESS (sysclk,reset)
BEGIN
IF (reset = '1') THEN
FOR k IN 1 TO 72 LOOP
addmultff(k) <= '0';
END LOOP;
ELSIF (rising_edge(sysclk)) THEN
IF (enable = '1') THEN
addmultff <= multone + (zerovec(35 DOWNTO 1) & multtwo(55 DOWNTO 19));
END IF;
END IF;
END PROCESS;
mulcc <= addmultff;
END rtl;
|
LIBRARY ieee;
USE ieee.std_logic_1164.all;
USE ieee.std_logic_signed.all;
USE ieee.std_logic_arith.all;
--***************************************************
--*** ***
--*** ALTERA FLOATING POINT DATAPATH COMPILER ***
--*** ***
--*** FP_MUL54US_38S.VHD ***
--*** ***
--*** Function: 4 pipeline stage unsigned 54 ***
--*** bit multiplier ***
--*** 38S: Stratix 3, 8 18x18, synthesizeable ***
--*** ***
--*** 20/08/09 ML ***
--*** ***
--*** (c) 2009 Altera Corporation ***
--*** ***
--*** Change History ***
--*** ***
--*** ***
--*** ***
--*** ***
--***************************************************
--***************************************************
--*** Notes: ***
--*** Build explicitlyout of two SIII/SIV ***
--*** DSP Blocks ***
--***************************************************
ENTITY fp_mul54us_38s IS
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
mulaa : IN STD_LOGIC_VECTOR (54 DOWNTO 1);
mulbb : IN STD_LOGIC_VECTOR (54 DOWNTO 1);
mulcc : OUT STD_LOGIC_VECTOR (72 DOWNTO 1)
);
END fp_mul54us_38s;
ARCHITECTURE rtl OF fp_mul54us_38s IS
signal zerovec : STD_LOGIC_VECTOR (36 DOWNTO 1);
signal multone : STD_LOGIC_VECTOR (72 DOWNTO 1);
signal multtwo : STD_LOGIC_VECTOR (55 DOWNTO 1);
signal addmultff : STD_LOGIC_VECTOR (72 DOWNTO 1);
component fp_mul3s
GENERIC (
widthaa : positive := 18;
widthbb : positive := 18;
widthcc : positive := 36
);
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
dataaa : IN STD_LOGIC_VECTOR (widthaa DOWNTO 1);
databb : IN STD_LOGIC_VECTOR (widthbb DOWNTO 1);
result : OUT STD_LOGIC_VECTOR (widthcc DOWNTO 1)
);
end component;
component fp_sum36x18
PORT (
aclr3 : IN STD_LOGIC := '0';
clock0 : IN STD_LOGIC := '1';
dataa_0 : IN STD_LOGIC_VECTOR (17 DOWNTO 0) := (OTHERS => '0');
dataa_1 : IN STD_LOGIC_VECTOR (17 DOWNTO 0) := (OTHERS => '0');
datab_0 : IN STD_LOGIC_VECTOR (35 DOWNTO 0) := (OTHERS => '0');
datab_1 : IN STD_LOGIC_VECTOR (35 DOWNTO 0) := (OTHERS => '0');
ena0 : IN STD_LOGIC := '1';
result : OUT STD_LOGIC_VECTOR (54 DOWNTO 0)
);
end component;
BEGIN
gza: FOR k IN 1 TO 36 GENERATE
zerovec(k) <= '0';
END GENERATE;
mone: fp_mul3s
GENERIC MAP (widthaa=>36,widthbb=>36,widthcc=>72)
PORT MAP (sysclk=>sysclk,reset=>reset,enable=>enable,
dataaa=>mulaa(54 DOWNTO 19),databb=>mulbb(54 DOWNTO 19),
result=>multone);
mtwo: fp_sum36x18
PORT MAP (aclr3=>reset,clock0=>sysclk,
dataa_0=>mulaa(18 DOWNTO 1),
dataa_1=>mulbb(18 DOWNTO 1),
datab_0=>mulbb(54 DOWNTO 19),
datab_1=>mulaa(54 DOWNTO 19),
ena0=>enable,
result=>multtwo);
paa: PROCESS (sysclk,reset)
BEGIN
IF (reset = '1') THEN
FOR k IN 1 TO 72 LOOP
addmultff(k) <= '0';
END LOOP;
ELSIF (rising_edge(sysclk)) THEN
IF (enable = '1') THEN
addmultff <= multone + (zerovec(35 DOWNTO 1) & multtwo(55 DOWNTO 19));
END IF;
END IF;
END PROCESS;
mulcc <= addmultff;
END rtl;
|
LIBRARY ieee;
USE ieee.std_logic_1164.all;
USE ieee.std_logic_signed.all;
USE ieee.std_logic_arith.all;
--***************************************************
--*** ***
--*** ALTERA FLOATING POINT DATAPATH COMPILER ***
--*** ***
--*** FP_MUL54US_38S.VHD ***
--*** ***
--*** Function: 4 pipeline stage unsigned 54 ***
--*** bit multiplier ***
--*** 38S: Stratix 3, 8 18x18, synthesizeable ***
--*** ***
--*** 20/08/09 ML ***
--*** ***
--*** (c) 2009 Altera Corporation ***
--*** ***
--*** Change History ***
--*** ***
--*** ***
--*** ***
--*** ***
--***************************************************
--***************************************************
--*** Notes: ***
--*** Build explicitlyout of two SIII/SIV ***
--*** DSP Blocks ***
--***************************************************
ENTITY fp_mul54us_38s IS
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
mulaa : IN STD_LOGIC_VECTOR (54 DOWNTO 1);
mulbb : IN STD_LOGIC_VECTOR (54 DOWNTO 1);
mulcc : OUT STD_LOGIC_VECTOR (72 DOWNTO 1)
);
END fp_mul54us_38s;
ARCHITECTURE rtl OF fp_mul54us_38s IS
signal zerovec : STD_LOGIC_VECTOR (36 DOWNTO 1);
signal multone : STD_LOGIC_VECTOR (72 DOWNTO 1);
signal multtwo : STD_LOGIC_VECTOR (55 DOWNTO 1);
signal addmultff : STD_LOGIC_VECTOR (72 DOWNTO 1);
component fp_mul3s
GENERIC (
widthaa : positive := 18;
widthbb : positive := 18;
widthcc : positive := 36
);
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
dataaa : IN STD_LOGIC_VECTOR (widthaa DOWNTO 1);
databb : IN STD_LOGIC_VECTOR (widthbb DOWNTO 1);
result : OUT STD_LOGIC_VECTOR (widthcc DOWNTO 1)
);
end component;
component fp_sum36x18
PORT (
aclr3 : IN STD_LOGIC := '0';
clock0 : IN STD_LOGIC := '1';
dataa_0 : IN STD_LOGIC_VECTOR (17 DOWNTO 0) := (OTHERS => '0');
dataa_1 : IN STD_LOGIC_VECTOR (17 DOWNTO 0) := (OTHERS => '0');
datab_0 : IN STD_LOGIC_VECTOR (35 DOWNTO 0) := (OTHERS => '0');
datab_1 : IN STD_LOGIC_VECTOR (35 DOWNTO 0) := (OTHERS => '0');
ena0 : IN STD_LOGIC := '1';
result : OUT STD_LOGIC_VECTOR (54 DOWNTO 0)
);
end component;
BEGIN
gza: FOR k IN 1 TO 36 GENERATE
zerovec(k) <= '0';
END GENERATE;
mone: fp_mul3s
GENERIC MAP (widthaa=>36,widthbb=>36,widthcc=>72)
PORT MAP (sysclk=>sysclk,reset=>reset,enable=>enable,
dataaa=>mulaa(54 DOWNTO 19),databb=>mulbb(54 DOWNTO 19),
result=>multone);
mtwo: fp_sum36x18
PORT MAP (aclr3=>reset,clock0=>sysclk,
dataa_0=>mulaa(18 DOWNTO 1),
dataa_1=>mulbb(18 DOWNTO 1),
datab_0=>mulbb(54 DOWNTO 19),
datab_1=>mulaa(54 DOWNTO 19),
ena0=>enable,
result=>multtwo);
paa: PROCESS (sysclk,reset)
BEGIN
IF (reset = '1') THEN
FOR k IN 1 TO 72 LOOP
addmultff(k) <= '0';
END LOOP;
ELSIF (rising_edge(sysclk)) THEN
IF (enable = '1') THEN
addmultff <= multone + (zerovec(35 DOWNTO 1) & multtwo(55 DOWNTO 19));
END IF;
END IF;
END PROCESS;
mulcc <= addmultff;
END rtl;
|
LIBRARY ieee;
USE ieee.std_logic_1164.all;
USE ieee.std_logic_signed.all;
USE ieee.std_logic_arith.all;
--***************************************************
--*** ***
--*** ALTERA FLOATING POINT DATAPATH COMPILER ***
--*** ***
--*** FP_MUL54US_38S.VHD ***
--*** ***
--*** Function: 4 pipeline stage unsigned 54 ***
--*** bit multiplier ***
--*** 38S: Stratix 3, 8 18x18, synthesizeable ***
--*** ***
--*** 20/08/09 ML ***
--*** ***
--*** (c) 2009 Altera Corporation ***
--*** ***
--*** Change History ***
--*** ***
--*** ***
--*** ***
--*** ***
--***************************************************
--***************************************************
--*** Notes: ***
--*** Build explicitlyout of two SIII/SIV ***
--*** DSP Blocks ***
--***************************************************
ENTITY fp_mul54us_38s IS
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
mulaa : IN STD_LOGIC_VECTOR (54 DOWNTO 1);
mulbb : IN STD_LOGIC_VECTOR (54 DOWNTO 1);
mulcc : OUT STD_LOGIC_VECTOR (72 DOWNTO 1)
);
END fp_mul54us_38s;
ARCHITECTURE rtl OF fp_mul54us_38s IS
signal zerovec : STD_LOGIC_VECTOR (36 DOWNTO 1);
signal multone : STD_LOGIC_VECTOR (72 DOWNTO 1);
signal multtwo : STD_LOGIC_VECTOR (55 DOWNTO 1);
signal addmultff : STD_LOGIC_VECTOR (72 DOWNTO 1);
component fp_mul3s
GENERIC (
widthaa : positive := 18;
widthbb : positive := 18;
widthcc : positive := 36
);
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
dataaa : IN STD_LOGIC_VECTOR (widthaa DOWNTO 1);
databb : IN STD_LOGIC_VECTOR (widthbb DOWNTO 1);
result : OUT STD_LOGIC_VECTOR (widthcc DOWNTO 1)
);
end component;
component fp_sum36x18
PORT (
aclr3 : IN STD_LOGIC := '0';
clock0 : IN STD_LOGIC := '1';
dataa_0 : IN STD_LOGIC_VECTOR (17 DOWNTO 0) := (OTHERS => '0');
dataa_1 : IN STD_LOGIC_VECTOR (17 DOWNTO 0) := (OTHERS => '0');
datab_0 : IN STD_LOGIC_VECTOR (35 DOWNTO 0) := (OTHERS => '0');
datab_1 : IN STD_LOGIC_VECTOR (35 DOWNTO 0) := (OTHERS => '0');
ena0 : IN STD_LOGIC := '1';
result : OUT STD_LOGIC_VECTOR (54 DOWNTO 0)
);
end component;
BEGIN
gza: FOR k IN 1 TO 36 GENERATE
zerovec(k) <= '0';
END GENERATE;
mone: fp_mul3s
GENERIC MAP (widthaa=>36,widthbb=>36,widthcc=>72)
PORT MAP (sysclk=>sysclk,reset=>reset,enable=>enable,
dataaa=>mulaa(54 DOWNTO 19),databb=>mulbb(54 DOWNTO 19),
result=>multone);
mtwo: fp_sum36x18
PORT MAP (aclr3=>reset,clock0=>sysclk,
dataa_0=>mulaa(18 DOWNTO 1),
dataa_1=>mulbb(18 DOWNTO 1),
datab_0=>mulbb(54 DOWNTO 19),
datab_1=>mulaa(54 DOWNTO 19),
ena0=>enable,
result=>multtwo);
paa: PROCESS (sysclk,reset)
BEGIN
IF (reset = '1') THEN
FOR k IN 1 TO 72 LOOP
addmultff(k) <= '0';
END LOOP;
ELSIF (rising_edge(sysclk)) THEN
IF (enable = '1') THEN
addmultff <= multone + (zerovec(35 DOWNTO 1) & multtwo(55 DOWNTO 19));
END IF;
END IF;
END PROCESS;
mulcc <= addmultff;
END rtl;
|
LIBRARY ieee;
USE ieee.std_logic_1164.all;
USE ieee.std_logic_signed.all;
USE ieee.std_logic_arith.all;
--***************************************************
--*** ***
--*** ALTERA FLOATING POINT DATAPATH COMPILER ***
--*** ***
--*** FP_MUL54US_38S.VHD ***
--*** ***
--*** Function: 4 pipeline stage unsigned 54 ***
--*** bit multiplier ***
--*** 38S: Stratix 3, 8 18x18, synthesizeable ***
--*** ***
--*** 20/08/09 ML ***
--*** ***
--*** (c) 2009 Altera Corporation ***
--*** ***
--*** Change History ***
--*** ***
--*** ***
--*** ***
--*** ***
--***************************************************
--***************************************************
--*** Notes: ***
--*** Build explicitlyout of two SIII/SIV ***
--*** DSP Blocks ***
--***************************************************
ENTITY fp_mul54us_38s IS
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
mulaa : IN STD_LOGIC_VECTOR (54 DOWNTO 1);
mulbb : IN STD_LOGIC_VECTOR (54 DOWNTO 1);
mulcc : OUT STD_LOGIC_VECTOR (72 DOWNTO 1)
);
END fp_mul54us_38s;
ARCHITECTURE rtl OF fp_mul54us_38s IS
signal zerovec : STD_LOGIC_VECTOR (36 DOWNTO 1);
signal multone : STD_LOGIC_VECTOR (72 DOWNTO 1);
signal multtwo : STD_LOGIC_VECTOR (55 DOWNTO 1);
signal addmultff : STD_LOGIC_VECTOR (72 DOWNTO 1);
component fp_mul3s
GENERIC (
widthaa : positive := 18;
widthbb : positive := 18;
widthcc : positive := 36
);
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
dataaa : IN STD_LOGIC_VECTOR (widthaa DOWNTO 1);
databb : IN STD_LOGIC_VECTOR (widthbb DOWNTO 1);
result : OUT STD_LOGIC_VECTOR (widthcc DOWNTO 1)
);
end component;
component fp_sum36x18
PORT (
aclr3 : IN STD_LOGIC := '0';
clock0 : IN STD_LOGIC := '1';
dataa_0 : IN STD_LOGIC_VECTOR (17 DOWNTO 0) := (OTHERS => '0');
dataa_1 : IN STD_LOGIC_VECTOR (17 DOWNTO 0) := (OTHERS => '0');
datab_0 : IN STD_LOGIC_VECTOR (35 DOWNTO 0) := (OTHERS => '0');
datab_1 : IN STD_LOGIC_VECTOR (35 DOWNTO 0) := (OTHERS => '0');
ena0 : IN STD_LOGIC := '1';
result : OUT STD_LOGIC_VECTOR (54 DOWNTO 0)
);
end component;
BEGIN
gza: FOR k IN 1 TO 36 GENERATE
zerovec(k) <= '0';
END GENERATE;
mone: fp_mul3s
GENERIC MAP (widthaa=>36,widthbb=>36,widthcc=>72)
PORT MAP (sysclk=>sysclk,reset=>reset,enable=>enable,
dataaa=>mulaa(54 DOWNTO 19),databb=>mulbb(54 DOWNTO 19),
result=>multone);
mtwo: fp_sum36x18
PORT MAP (aclr3=>reset,clock0=>sysclk,
dataa_0=>mulaa(18 DOWNTO 1),
dataa_1=>mulbb(18 DOWNTO 1),
datab_0=>mulbb(54 DOWNTO 19),
datab_1=>mulaa(54 DOWNTO 19),
ena0=>enable,
result=>multtwo);
paa: PROCESS (sysclk,reset)
BEGIN
IF (reset = '1') THEN
FOR k IN 1 TO 72 LOOP
addmultff(k) <= '0';
END LOOP;
ELSIF (rising_edge(sysclk)) THEN
IF (enable = '1') THEN
addmultff <= multone + (zerovec(35 DOWNTO 1) & multtwo(55 DOWNTO 19));
END IF;
END IF;
END PROCESS;
mulcc <= addmultff;
END rtl;
|
LIBRARY ieee;
USE ieee.std_logic_1164.all;
USE ieee.std_logic_signed.all;
USE ieee.std_logic_arith.all;
--***************************************************
--*** ***
--*** ALTERA FLOATING POINT DATAPATH COMPILER ***
--*** ***
--*** FP_MUL54US_38S.VHD ***
--*** ***
--*** Function: 4 pipeline stage unsigned 54 ***
--*** bit multiplier ***
--*** 38S: Stratix 3, 8 18x18, synthesizeable ***
--*** ***
--*** 20/08/09 ML ***
--*** ***
--*** (c) 2009 Altera Corporation ***
--*** ***
--*** Change History ***
--*** ***
--*** ***
--*** ***
--*** ***
--***************************************************
--***************************************************
--*** Notes: ***
--*** Build explicitlyout of two SIII/SIV ***
--*** DSP Blocks ***
--***************************************************
ENTITY fp_mul54us_38s IS
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
mulaa : IN STD_LOGIC_VECTOR (54 DOWNTO 1);
mulbb : IN STD_LOGIC_VECTOR (54 DOWNTO 1);
mulcc : OUT STD_LOGIC_VECTOR (72 DOWNTO 1)
);
END fp_mul54us_38s;
ARCHITECTURE rtl OF fp_mul54us_38s IS
signal zerovec : STD_LOGIC_VECTOR (36 DOWNTO 1);
signal multone : STD_LOGIC_VECTOR (72 DOWNTO 1);
signal multtwo : STD_LOGIC_VECTOR (55 DOWNTO 1);
signal addmultff : STD_LOGIC_VECTOR (72 DOWNTO 1);
component fp_mul3s
GENERIC (
widthaa : positive := 18;
widthbb : positive := 18;
widthcc : positive := 36
);
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
dataaa : IN STD_LOGIC_VECTOR (widthaa DOWNTO 1);
databb : IN STD_LOGIC_VECTOR (widthbb DOWNTO 1);
result : OUT STD_LOGIC_VECTOR (widthcc DOWNTO 1)
);
end component;
component fp_sum36x18
PORT (
aclr3 : IN STD_LOGIC := '0';
clock0 : IN STD_LOGIC := '1';
dataa_0 : IN STD_LOGIC_VECTOR (17 DOWNTO 0) := (OTHERS => '0');
dataa_1 : IN STD_LOGIC_VECTOR (17 DOWNTO 0) := (OTHERS => '0');
datab_0 : IN STD_LOGIC_VECTOR (35 DOWNTO 0) := (OTHERS => '0');
datab_1 : IN STD_LOGIC_VECTOR (35 DOWNTO 0) := (OTHERS => '0');
ena0 : IN STD_LOGIC := '1';
result : OUT STD_LOGIC_VECTOR (54 DOWNTO 0)
);
end component;
BEGIN
gza: FOR k IN 1 TO 36 GENERATE
zerovec(k) <= '0';
END GENERATE;
mone: fp_mul3s
GENERIC MAP (widthaa=>36,widthbb=>36,widthcc=>72)
PORT MAP (sysclk=>sysclk,reset=>reset,enable=>enable,
dataaa=>mulaa(54 DOWNTO 19),databb=>mulbb(54 DOWNTO 19),
result=>multone);
mtwo: fp_sum36x18
PORT MAP (aclr3=>reset,clock0=>sysclk,
dataa_0=>mulaa(18 DOWNTO 1),
dataa_1=>mulbb(18 DOWNTO 1),
datab_0=>mulbb(54 DOWNTO 19),
datab_1=>mulaa(54 DOWNTO 19),
ena0=>enable,
result=>multtwo);
paa: PROCESS (sysclk,reset)
BEGIN
IF (reset = '1') THEN
FOR k IN 1 TO 72 LOOP
addmultff(k) <= '0';
END LOOP;
ELSIF (rising_edge(sysclk)) THEN
IF (enable = '1') THEN
addmultff <= multone + (zerovec(35 DOWNTO 1) & multtwo(55 DOWNTO 19));
END IF;
END IF;
END PROCESS;
mulcc <= addmultff;
END rtl;
|
LIBRARY ieee;
USE ieee.std_logic_1164.all;
USE ieee.std_logic_signed.all;
USE ieee.std_logic_arith.all;
--***************************************************
--*** ***
--*** ALTERA FLOATING POINT DATAPATH COMPILER ***
--*** ***
--*** FP_MUL54US_38S.VHD ***
--*** ***
--*** Function: 4 pipeline stage unsigned 54 ***
--*** bit multiplier ***
--*** 38S: Stratix 3, 8 18x18, synthesizeable ***
--*** ***
--*** 20/08/09 ML ***
--*** ***
--*** (c) 2009 Altera Corporation ***
--*** ***
--*** Change History ***
--*** ***
--*** ***
--*** ***
--*** ***
--***************************************************
--***************************************************
--*** Notes: ***
--*** Build explicitlyout of two SIII/SIV ***
--*** DSP Blocks ***
--***************************************************
ENTITY fp_mul54us_38s IS
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
mulaa : IN STD_LOGIC_VECTOR (54 DOWNTO 1);
mulbb : IN STD_LOGIC_VECTOR (54 DOWNTO 1);
mulcc : OUT STD_LOGIC_VECTOR (72 DOWNTO 1)
);
END fp_mul54us_38s;
ARCHITECTURE rtl OF fp_mul54us_38s IS
signal zerovec : STD_LOGIC_VECTOR (36 DOWNTO 1);
signal multone : STD_LOGIC_VECTOR (72 DOWNTO 1);
signal multtwo : STD_LOGIC_VECTOR (55 DOWNTO 1);
signal addmultff : STD_LOGIC_VECTOR (72 DOWNTO 1);
component fp_mul3s
GENERIC (
widthaa : positive := 18;
widthbb : positive := 18;
widthcc : positive := 36
);
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
dataaa : IN STD_LOGIC_VECTOR (widthaa DOWNTO 1);
databb : IN STD_LOGIC_VECTOR (widthbb DOWNTO 1);
result : OUT STD_LOGIC_VECTOR (widthcc DOWNTO 1)
);
end component;
component fp_sum36x18
PORT (
aclr3 : IN STD_LOGIC := '0';
clock0 : IN STD_LOGIC := '1';
dataa_0 : IN STD_LOGIC_VECTOR (17 DOWNTO 0) := (OTHERS => '0');
dataa_1 : IN STD_LOGIC_VECTOR (17 DOWNTO 0) := (OTHERS => '0');
datab_0 : IN STD_LOGIC_VECTOR (35 DOWNTO 0) := (OTHERS => '0');
datab_1 : IN STD_LOGIC_VECTOR (35 DOWNTO 0) := (OTHERS => '0');
ena0 : IN STD_LOGIC := '1';
result : OUT STD_LOGIC_VECTOR (54 DOWNTO 0)
);
end component;
BEGIN
gza: FOR k IN 1 TO 36 GENERATE
zerovec(k) <= '0';
END GENERATE;
mone: fp_mul3s
GENERIC MAP (widthaa=>36,widthbb=>36,widthcc=>72)
PORT MAP (sysclk=>sysclk,reset=>reset,enable=>enable,
dataaa=>mulaa(54 DOWNTO 19),databb=>mulbb(54 DOWNTO 19),
result=>multone);
mtwo: fp_sum36x18
PORT MAP (aclr3=>reset,clock0=>sysclk,
dataa_0=>mulaa(18 DOWNTO 1),
dataa_1=>mulbb(18 DOWNTO 1),
datab_0=>mulbb(54 DOWNTO 19),
datab_1=>mulaa(54 DOWNTO 19),
ena0=>enable,
result=>multtwo);
paa: PROCESS (sysclk,reset)
BEGIN
IF (reset = '1') THEN
FOR k IN 1 TO 72 LOOP
addmultff(k) <= '0';
END LOOP;
ELSIF (rising_edge(sysclk)) THEN
IF (enable = '1') THEN
addmultff <= multone + (zerovec(35 DOWNTO 1) & multtwo(55 DOWNTO 19));
END IF;
END IF;
END PROCESS;
mulcc <= addmultff;
END rtl;
|
LIBRARY ieee;
USE ieee.std_logic_1164.all;
USE ieee.std_logic_signed.all;
USE ieee.std_logic_arith.all;
--***************************************************
--*** ***
--*** ALTERA FLOATING POINT DATAPATH COMPILER ***
--*** ***
--*** FP_MUL54US_38S.VHD ***
--*** ***
--*** Function: 4 pipeline stage unsigned 54 ***
--*** bit multiplier ***
--*** 38S: Stratix 3, 8 18x18, synthesizeable ***
--*** ***
--*** 20/08/09 ML ***
--*** ***
--*** (c) 2009 Altera Corporation ***
--*** ***
--*** Change History ***
--*** ***
--*** ***
--*** ***
--*** ***
--***************************************************
--***************************************************
--*** Notes: ***
--*** Build explicitlyout of two SIII/SIV ***
--*** DSP Blocks ***
--***************************************************
ENTITY fp_mul54us_38s IS
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
mulaa : IN STD_LOGIC_VECTOR (54 DOWNTO 1);
mulbb : IN STD_LOGIC_VECTOR (54 DOWNTO 1);
mulcc : OUT STD_LOGIC_VECTOR (72 DOWNTO 1)
);
END fp_mul54us_38s;
ARCHITECTURE rtl OF fp_mul54us_38s IS
signal zerovec : STD_LOGIC_VECTOR (36 DOWNTO 1);
signal multone : STD_LOGIC_VECTOR (72 DOWNTO 1);
signal multtwo : STD_LOGIC_VECTOR (55 DOWNTO 1);
signal addmultff : STD_LOGIC_VECTOR (72 DOWNTO 1);
component fp_mul3s
GENERIC (
widthaa : positive := 18;
widthbb : positive := 18;
widthcc : positive := 36
);
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
dataaa : IN STD_LOGIC_VECTOR (widthaa DOWNTO 1);
databb : IN STD_LOGIC_VECTOR (widthbb DOWNTO 1);
result : OUT STD_LOGIC_VECTOR (widthcc DOWNTO 1)
);
end component;
component fp_sum36x18
PORT (
aclr3 : IN STD_LOGIC := '0';
clock0 : IN STD_LOGIC := '1';
dataa_0 : IN STD_LOGIC_VECTOR (17 DOWNTO 0) := (OTHERS => '0');
dataa_1 : IN STD_LOGIC_VECTOR (17 DOWNTO 0) := (OTHERS => '0');
datab_0 : IN STD_LOGIC_VECTOR (35 DOWNTO 0) := (OTHERS => '0');
datab_1 : IN STD_LOGIC_VECTOR (35 DOWNTO 0) := (OTHERS => '0');
ena0 : IN STD_LOGIC := '1';
result : OUT STD_LOGIC_VECTOR (54 DOWNTO 0)
);
end component;
BEGIN
gza: FOR k IN 1 TO 36 GENERATE
zerovec(k) <= '0';
END GENERATE;
mone: fp_mul3s
GENERIC MAP (widthaa=>36,widthbb=>36,widthcc=>72)
PORT MAP (sysclk=>sysclk,reset=>reset,enable=>enable,
dataaa=>mulaa(54 DOWNTO 19),databb=>mulbb(54 DOWNTO 19),
result=>multone);
mtwo: fp_sum36x18
PORT MAP (aclr3=>reset,clock0=>sysclk,
dataa_0=>mulaa(18 DOWNTO 1),
dataa_1=>mulbb(18 DOWNTO 1),
datab_0=>mulbb(54 DOWNTO 19),
datab_1=>mulaa(54 DOWNTO 19),
ena0=>enable,
result=>multtwo);
paa: PROCESS (sysclk,reset)
BEGIN
IF (reset = '1') THEN
FOR k IN 1 TO 72 LOOP
addmultff(k) <= '0';
END LOOP;
ELSIF (rising_edge(sysclk)) THEN
IF (enable = '1') THEN
addmultff <= multone + (zerovec(35 DOWNTO 1) & multtwo(55 DOWNTO 19));
END IF;
END IF;
END PROCESS;
mulcc <= addmultff;
END rtl;
|
LIBRARY ieee;
USE ieee.std_logic_1164.all;
USE ieee.std_logic_signed.all;
USE ieee.std_logic_arith.all;
--***************************************************
--*** ***
--*** ALTERA FLOATING POINT DATAPATH COMPILER ***
--*** ***
--*** FP_MUL54US_38S.VHD ***
--*** ***
--*** Function: 4 pipeline stage unsigned 54 ***
--*** bit multiplier ***
--*** 38S: Stratix 3, 8 18x18, synthesizeable ***
--*** ***
--*** 20/08/09 ML ***
--*** ***
--*** (c) 2009 Altera Corporation ***
--*** ***
--*** Change History ***
--*** ***
--*** ***
--*** ***
--*** ***
--***************************************************
--***************************************************
--*** Notes: ***
--*** Build explicitlyout of two SIII/SIV ***
--*** DSP Blocks ***
--***************************************************
ENTITY fp_mul54us_38s IS
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
mulaa : IN STD_LOGIC_VECTOR (54 DOWNTO 1);
mulbb : IN STD_LOGIC_VECTOR (54 DOWNTO 1);
mulcc : OUT STD_LOGIC_VECTOR (72 DOWNTO 1)
);
END fp_mul54us_38s;
ARCHITECTURE rtl OF fp_mul54us_38s IS
signal zerovec : STD_LOGIC_VECTOR (36 DOWNTO 1);
signal multone : STD_LOGIC_VECTOR (72 DOWNTO 1);
signal multtwo : STD_LOGIC_VECTOR (55 DOWNTO 1);
signal addmultff : STD_LOGIC_VECTOR (72 DOWNTO 1);
component fp_mul3s
GENERIC (
widthaa : positive := 18;
widthbb : positive := 18;
widthcc : positive := 36
);
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
dataaa : IN STD_LOGIC_VECTOR (widthaa DOWNTO 1);
databb : IN STD_LOGIC_VECTOR (widthbb DOWNTO 1);
result : OUT STD_LOGIC_VECTOR (widthcc DOWNTO 1)
);
end component;
component fp_sum36x18
PORT (
aclr3 : IN STD_LOGIC := '0';
clock0 : IN STD_LOGIC := '1';
dataa_0 : IN STD_LOGIC_VECTOR (17 DOWNTO 0) := (OTHERS => '0');
dataa_1 : IN STD_LOGIC_VECTOR (17 DOWNTO 0) := (OTHERS => '0');
datab_0 : IN STD_LOGIC_VECTOR (35 DOWNTO 0) := (OTHERS => '0');
datab_1 : IN STD_LOGIC_VECTOR (35 DOWNTO 0) := (OTHERS => '0');
ena0 : IN STD_LOGIC := '1';
result : OUT STD_LOGIC_VECTOR (54 DOWNTO 0)
);
end component;
BEGIN
gza: FOR k IN 1 TO 36 GENERATE
zerovec(k) <= '0';
END GENERATE;
mone: fp_mul3s
GENERIC MAP (widthaa=>36,widthbb=>36,widthcc=>72)
PORT MAP (sysclk=>sysclk,reset=>reset,enable=>enable,
dataaa=>mulaa(54 DOWNTO 19),databb=>mulbb(54 DOWNTO 19),
result=>multone);
mtwo: fp_sum36x18
PORT MAP (aclr3=>reset,clock0=>sysclk,
dataa_0=>mulaa(18 DOWNTO 1),
dataa_1=>mulbb(18 DOWNTO 1),
datab_0=>mulbb(54 DOWNTO 19),
datab_1=>mulaa(54 DOWNTO 19),
ena0=>enable,
result=>multtwo);
paa: PROCESS (sysclk,reset)
BEGIN
IF (reset = '1') THEN
FOR k IN 1 TO 72 LOOP
addmultff(k) <= '0';
END LOOP;
ELSIF (rising_edge(sysclk)) THEN
IF (enable = '1') THEN
addmultff <= multone + (zerovec(35 DOWNTO 1) & multtwo(55 DOWNTO 19));
END IF;
END IF;
END PROCESS;
mulcc <= addmultff;
END rtl;
|
LIBRARY ieee;
USE ieee.std_logic_1164.all;
USE ieee.std_logic_signed.all;
USE ieee.std_logic_arith.all;
--***************************************************
--*** ***
--*** ALTERA FLOATING POINT DATAPATH COMPILER ***
--*** ***
--*** FP_MUL54US_38S.VHD ***
--*** ***
--*** Function: 4 pipeline stage unsigned 54 ***
--*** bit multiplier ***
--*** 38S: Stratix 3, 8 18x18, synthesizeable ***
--*** ***
--*** 20/08/09 ML ***
--*** ***
--*** (c) 2009 Altera Corporation ***
--*** ***
--*** Change History ***
--*** ***
--*** ***
--*** ***
--*** ***
--***************************************************
--***************************************************
--*** Notes: ***
--*** Build explicitlyout of two SIII/SIV ***
--*** DSP Blocks ***
--***************************************************
ENTITY fp_mul54us_38s IS
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
mulaa : IN STD_LOGIC_VECTOR (54 DOWNTO 1);
mulbb : IN STD_LOGIC_VECTOR (54 DOWNTO 1);
mulcc : OUT STD_LOGIC_VECTOR (72 DOWNTO 1)
);
END fp_mul54us_38s;
ARCHITECTURE rtl OF fp_mul54us_38s IS
signal zerovec : STD_LOGIC_VECTOR (36 DOWNTO 1);
signal multone : STD_LOGIC_VECTOR (72 DOWNTO 1);
signal multtwo : STD_LOGIC_VECTOR (55 DOWNTO 1);
signal addmultff : STD_LOGIC_VECTOR (72 DOWNTO 1);
component fp_mul3s
GENERIC (
widthaa : positive := 18;
widthbb : positive := 18;
widthcc : positive := 36
);
PORT (
sysclk : IN STD_LOGIC;
reset : IN STD_LOGIC;
enable : IN STD_LOGIC;
dataaa : IN STD_LOGIC_VECTOR (widthaa DOWNTO 1);
databb : IN STD_LOGIC_VECTOR (widthbb DOWNTO 1);
result : OUT STD_LOGIC_VECTOR (widthcc DOWNTO 1)
);
end component;
component fp_sum36x18
PORT (
aclr3 : IN STD_LOGIC := '0';
clock0 : IN STD_LOGIC := '1';
dataa_0 : IN STD_LOGIC_VECTOR (17 DOWNTO 0) := (OTHERS => '0');
dataa_1 : IN STD_LOGIC_VECTOR (17 DOWNTO 0) := (OTHERS => '0');
datab_0 : IN STD_LOGIC_VECTOR (35 DOWNTO 0) := (OTHERS => '0');
datab_1 : IN STD_LOGIC_VECTOR (35 DOWNTO 0) := (OTHERS => '0');
ena0 : IN STD_LOGIC := '1';
result : OUT STD_LOGIC_VECTOR (54 DOWNTO 0)
);
end component;
BEGIN
gza: FOR k IN 1 TO 36 GENERATE
zerovec(k) <= '0';
END GENERATE;
mone: fp_mul3s
GENERIC MAP (widthaa=>36,widthbb=>36,widthcc=>72)
PORT MAP (sysclk=>sysclk,reset=>reset,enable=>enable,
dataaa=>mulaa(54 DOWNTO 19),databb=>mulbb(54 DOWNTO 19),
result=>multone);
mtwo: fp_sum36x18
PORT MAP (aclr3=>reset,clock0=>sysclk,
dataa_0=>mulaa(18 DOWNTO 1),
dataa_1=>mulbb(18 DOWNTO 1),
datab_0=>mulbb(54 DOWNTO 19),
datab_1=>mulaa(54 DOWNTO 19),
ena0=>enable,
result=>multtwo);
paa: PROCESS (sysclk,reset)
BEGIN
IF (reset = '1') THEN
FOR k IN 1 TO 72 LOOP
addmultff(k) <= '0';
END LOOP;
ELSIF (rising_edge(sysclk)) THEN
IF (enable = '1') THEN
addmultff <= multone + (zerovec(35 DOWNTO 1) & multtwo(55 DOWNTO 19));
END IF;
END IF;
END PROCESS;
mulcc <= addmultff;
END rtl;
|
package gol_types is
constant ROWS: integer := 5;
constant COLS: integer := 5;
type board_state is array(ROWS downto 0, COLS downto 0) of integer range 0 to 1;
constant GLIDER: board_state := ((0, 0, 0, 0, 0, 0),
(0, 0, 1, 0, 0, 0),
(0, 0, 0, 1, 0, 0),
(0, 1, 1, 1, 0, 0),
(0, 0, 0, 0, 0, 0),
(0, 0, 0, 0, 0, 0));
end package gol_types;
---
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use std.textio.all;
use work.gol_types.all;
entity test_multicell_boundaries is
end test_multicell_boundaries;
architecture behavioural of test_multicell_boundaries is
signal clock : std_logic;
component cell is
generic (
begin_alive : integer range 0 to 1
);
port (
clock : in std_logic;
nw, nn, ne : in integer range 0 to 1;
ww, ee : in integer range 0 to 1;
sw, ss, se : in integer range 0 to 1;
alive: out integer range 0 to 1
);
end component;
function print_state(mat: board_state)
return integer is
variable l : line;
begin
writeline (output, l);
for i in ROWS downto 0 loop
for j in COLS downto 0 loop
write (l, ' ');
write (l, mat(i,j));
end loop;
writeline (output, l);
end loop;
return 0;
end print_state;
signal interconnect: board_state;
begin
ROW:
for row in 0 to ROWS generate
COL:
for col in 0 to COLS generate
cellx: cell generic map (begin_alive => GLIDER(row, col))
port map (clock,
interconnect((row - 1) mod ROWS, (col - 1) mod COLS), interconnect((row - 1) mod ROWS, col), interconnect((row - 1) mod ROWS, (col + 1) mod COLS),
interconnect(row, (col - 1) mod COLS), interconnect(row, (col + 1) mod COLS),
interconnect((row + 1) mod ROWS, (col - 1) mod COLS), interconnect((row + 1) mod ROWS, col), interconnect((row + 1) mod ROWS, (col + 1) mod COLS),
interconnect(row, col));
end generate COL; -- COLS
end generate ROW; -- ROWS
-- Starts dead test
process
variable dummy: integer range 0 to 1;
constant T0: board_state := GLIDER;
constant T1: board_state := ((0, 0, 0, 0, 0, 0),
(0, 0, 0, 0, 0, 0),
(0, 1, 0, 1, 0, 0),
(0, 0, 1, 1, 0, 0),
(0, 0, 1, 0, 0, 0),
(0, 0, 0, 0, 0, 0));
constant T2: board_state := ((0, 0, 0, 0, 0, 0),
(0, 0, 0, 0, 0, 0),
(0, 0, 0, 1, 0, 0),
(0, 1, 0, 1, 0, 0),
(0, 0, 1, 1, 0, 0),
(0, 0, 0, 0, 0, 0));
constant T3: board_state := ((0, 0, 0, 0, 0, 0),
(0, 0, 0, 0, 0, 0),
(0, 0, 1, 0, 0, 0),
(0, 0, 0, 1, 1, 0),
(0, 0, 1, 1, 0, 0),
(0, 0, 0, 0, 0, 0));
-- T4 is the end of a cycle - glider is period 4.
constant T4: board_state := ((0, 0, 0, 0, 0, 0),
(0, 0, 0, 0, 0, 0),
(0, 0, 0, 1, 0, 0),
(0, 0, 0, 0, 1, 0),
(0, 0, 1, 1, 1, 0),
(0, 0, 0, 0, 0, 0));
begin
assert interconnect = T0
report "Board should start as glider" severity error;
clock <= '0';
wait for 1 ns;
clock <= '1';
wait for 1 ns;
assert interconnect = T1
report "Board should proceed to state T1" severity error;
clock <= '0';
wait for 1 ns;
clock <= '1';
wait for 1 ns;
assert interconnect = T2
report "Board should proceed to state T2" severity error;
clock <= '0';
wait for 1 ns;
clock <= '1';
wait for 1 ns;
assert interconnect = T3
report "Board should proceed to state T3" severity error;
clock <= '0';
wait for 1 ns;
clock <= '1';
wait for 1 ns;
assert interconnect = T4
report "Board should proceed to state T4" severity error;
-- At this point we've proven the glider progresses through one of its cycles,
-- but we still need to see it navigate the entire space and return to start.
-- This takes an extra 16 steps.
for i in 1 to 16 loop
clock <= '0';
wait for 1 ns;
clock <= '1';
wait for 1 ns;
end loop;
assert interconnect = T0
report "Board should proceed to state T4" severity error;
wait;
end process;
end behavioural;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
--Generic Help
--C_CDC_TYPE : Defines the type of CDC needed
-- 0 means pulse synchronizer. Used to transfer one clock pulse
-- from prmry domain to scndry domain.
-- 1 means level synchronizer. Used to transfer level signal.
-- 2 means level synchronizer with ack. Used to transfer level
-- signal. Input signal should change only when prmry_ack is detected
--
--C_FLOP_INPUT : when set to 1 adds one flop stage to the input prmry_in signal
-- Set to 0 when incoming signal is purely floped signal.
--
--C_RESET_STATE : Generally sync flops need not have resets. However, in some cases
-- it might be needed.
-- 0 means reset not needed for sync flops
-- 1 means reset needed for sync flops. i
-- In this case prmry_resetn should be in prmry clock,
-- while scndry_reset should be in scndry clock.
--
--C_SINGLE_BIT : CDC should normally be done for single bit signals only.
-- However, based on design buses can also be CDC'ed.
-- 0 means it is a bus. In this case input be connected to prmry_vect_in.
-- Output is on scndry_vect_out.
-- 1 means it is a single bit. In this case input be connected to prmry_in.
-- Output is on scndry_out.
--
--C_VECTOR_WIDTH : defines the size of bus. This is irrelevant when C_SINGLE_BIT = 1
--
--C_MTBF_STAGES : Defines the number of sync stages needed. Allowed values are 0 to 6.
-- Value of 0, 1 is allowed only for level CDC.
-- Min value for Pulse CDC is 2
--
--Whenever this file is used following XDC constraint has to be added
-- set_false_path -to [get_pins -hier *cdc_to*/D]
--IO Ports
--
-- prmry_aclk : clock of originating domain (source domain)
-- prmry_resetn : sync reset of originating clock domain (source domain)
-- prmry_in : input signal bit. This should be a pure flop output without
-- any combi logic. This is source.
-- prmry_vect_in : bus signal. From Source domain.
-- prmry_ack : Ack signal, valid for one clock period, in prmry_aclk domain.
-- Used only when C_CDC_TYPE = 2
-- scndry_aclk : destination clock.
-- scndry_resetn : sync reset of destination domain
-- scndry_out : sync'ed output in destination domain. Single bit.
-- scndry_vect_out : sync'ed output in destination domain. bus.
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use ieee.std_logic_misc.all;
library unisim;
use unisim.vcomponents.FDR;
entity cdc_sync is
generic (
C_CDC_TYPE : integer range 0 to 2 := 1 ;
-- 0 is pulse synch
-- 1 is level synch
-- 2 is ack based level sync
C_RESET_STATE : integer range 0 to 1 := 0 ;
-- 0 is reset not needed
-- 1 is reset needed
C_SINGLE_BIT : integer range 0 to 1 := 1 ;
-- 0 is bus input
-- 1 is single bit input
C_FLOP_INPUT : integer range 0 to 1 := 0 ;
C_VECTOR_WIDTH : integer range 0 to 64 := 32 ;
C_MTBF_STAGES : integer range 0 to 6 := 2
-- Vector Data witdth
);
port (
prmry_aclk : in std_logic ; --
prmry_resetn : in std_logic ; --
prmry_in : in std_logic ; --
prmry_vect_in : in std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) ; --
prmry_ack : out std_logic ;
--
scndry_aclk : in std_logic ; --
scndry_resetn : in std_logic ; --
--
-- Primary to Secondary Clock Crossing --
scndry_out : out std_logic ; --
--
scndry_vect_out : out std_logic_vector --
(C_VECTOR_WIDTH - 1 downto 0) --
);
end cdc_sync;
-------------------------------------------------------------------------------
-- Architecture
-------------------------------------------------------------------------------
architecture implementation of cdc_sync is
attribute DowngradeIPIdentifiedWarnings : string;
attribute DowngradeIPIdentifiedWarnings of implementation : architecture is "yes";
--attribute DONT_TOUCH : STRING;
--attribute KEEP : STRING;
--attribute DONT_TOUCH of implementation : architecture is "yes";
signal prmry_resetn1 : std_logic := '0';
signal scndry_resetn1 : std_logic := '0';
signal prmry_reset2 : std_logic := '0';
signal scndry_reset2 : std_logic := '0';
--attribute KEEP of prmry_resetn1 : signal is "true";
--attribute KEEP of scndry_resetn1 : signal is "true";
-------------------------------------------------------------------------------
-- Functions
-------------------------------------------------------------------------------
-- No Functions Declared
-------------------------------------------------------------------------------
-- Constants Declarations
-------------------------------------------------------------------------------
-- No Constants Declared
-------------------------------------------------------------------------------
-- Begin architecture logic
-------------------------------------------------------------------------------
begin
HAS_RESET : if C_RESET_STATE = 1 generate
begin
prmry_resetn1 <= prmry_resetn;
scndry_resetn1 <= scndry_resetn;
end generate HAS_RESET;
HAS_NO_RESET : if C_RESET_STATE = 0 generate
begin
prmry_resetn1 <= '1';
scndry_resetn1 <= '1';
end generate HAS_NO_RESET;
prmry_reset2 <= not prmry_resetn1;
scndry_reset2 <= not scndry_resetn1;
-- Generate PULSE clock domain crossing
GENERATE_PULSE_P_S_CDC_OPEN_ENDED : if C_CDC_TYPE = 0 generate
-- Primary to Secondary
signal s_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_out_d1_cdc_to : signal is "true";
signal s_out_d2 : std_logic := '0';
signal s_out_d3 : std_logic := '0';
signal s_out_d4 : std_logic := '0';
signal s_out_d5 : std_logic := '0';
signal s_out_d6 : std_logic := '0';
signal s_out_d7 : std_logic := '0';
signal s_out_re : std_logic := '0';
signal prmry_in_xored : std_logic := '0';
signal p_in_d1_cdc_from : std_logic := '0';
signal srst_d1 : std_logic := '0';
signal srst_d2 : std_logic := '0';
signal srst_d3 : std_logic := '0';
signal srst_d4 : std_logic := '0';
signal srst_d5 : std_logic := '0';
signal srst_d6 : std_logic := '0';
signal srst_d7 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF REG_P_IN2_cdc_to : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d2 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d3 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d4 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d5 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d6 : label IS "true";
ATTRIBUTE async_reg OF P_IN_CROSS2SCNDRY_s_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Pulse Clock Crossing **
--** PRIMARY TO SECONDARY OPEN-ENDED **
--*****************************************************************************
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
prmry_in_xored <= prmry_in xor p_in_d1_cdc_from;
--------------------------------------REG_P_IN : process(prmry_aclk)
-------------------------------------- begin
-------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
-------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
-------------------------------------- p_in_d1_cdc_from <= '0';
-------------------------------------- else
-------------------------------------- p_in_d1_cdc_from <= prmry_in_xored;
-------------------------------------- end if;
-------------------------------------- end if;
-------------------------------------- end process REG_P_IN;
REG_P_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in_xored,
R => prmry_reset2
);
REG_P_IN2_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d1_cdc_to,
C => scndry_aclk,
D => p_in_d1_cdc_from,
R => scndry_reset2
);
------------------------------------ P_IN_CROSS2SCNDRY : process(scndry_aclk)
------------------------------------ begin
------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------ s_out_d2 <= '0';
------------------------------------ s_out_d3 <= '0';
------------------------------------ s_out_d4 <= '0';
------------------------------------ s_out_d5 <= '0';
------------------------------------ s_out_d6 <= '0';
------------------------------------ s_out_d7 <= '0';
------------------------------------ scndry_out <= '0';
------------------------------------ else
------------------------------------ s_out_d2 <= s_out_d1_cdc_to;
------------------------------------ s_out_d3 <= s_out_d2;
------------------------------------ s_out_d4 <= s_out_d3;
------------------------------------ s_out_d5 <= s_out_d4;
------------------------------------ s_out_d6 <= s_out_d5;
------------------------------------ s_out_d7 <= s_out_d6;
------------------------------------ scndry_out <= s_out_re;
------------------------------------ end if;
------------------------------------ end if;
------------------------------------ end process P_IN_CROSS2SCNDRY;
P_IN_CROSS2SCNDRY_s_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d2,
C => scndry_aclk,
D => s_out_d1_cdc_to,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d3,
C => scndry_aclk,
D => s_out_d2,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d4,
C => scndry_aclk,
D => s_out_d3,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d5,
C => scndry_aclk,
D => s_out_d4,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d6,
C => scndry_aclk,
D => s_out_d5,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_s_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => s_out_d7,
C => scndry_aclk,
D => s_out_d6,
R => scndry_reset2
);
P_IN_CROSS2SCNDRY_scndry_out : component FDR
generic map(INIT => '0'
)port map (
Q => scndry_out,
C => scndry_aclk,
D => s_out_re,
R => scndry_reset2
);
s_rst_d1 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d1,
C => scndry_aclk,
D => '1',
R => scndry_reset2
);
s_rst_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d2,
C => scndry_aclk,
D => srst_d1,
R => scndry_reset2
);
s_rst_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d3,
C => scndry_aclk,
D => srst_d2,
R => scndry_reset2
);
s_rst_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d4,
C => scndry_aclk,
D => srst_d3,
R => scndry_reset2
);
s_rst_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d5,
C => scndry_aclk,
D => srst_d4,
R => scndry_reset2
);
s_rst_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d6,
C => scndry_aclk,
D => srst_d5,
R => scndry_reset2
);
s_rst_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => srst_d7,
C => scndry_aclk,
D => srst_d6,
R => scndry_reset2
);
MTBF_2 : if C_MTBF_STAGES = 2 generate
begin
s_out_re <= (s_out_d2 xor s_out_d3) and (srst_d3);
end generate MTBF_2;
MTBF_3 : if C_MTBF_STAGES = 3 generate
begin
s_out_re <= (s_out_d3 xor s_out_d4) and (srst_d4);
end generate MTBF_3;
MTBF_4 : if C_MTBF_STAGES = 4 generate
begin
s_out_re <= (s_out_d4 xor s_out_d5) and (srst_d5);
end generate MTBF_4;
MTBF_5 : if C_MTBF_STAGES = 5 generate
begin
s_out_re <= (s_out_d5 xor s_out_d6) and (srst_d6);
end generate MTBF_5;
MTBF_6 : if C_MTBF_STAGES = 6 generate
begin
s_out_re <= (s_out_d6 xor s_out_d7) and (srst_d7);
end generate MTBF_6;
-- Feed secondary pulse out
end generate GENERATE_PULSE_P_S_CDC_OPEN_ENDED;
-- Generate LEVEL clock domain crossing with reset state = 0
GENERATE_LEVEL_P_S_CDC : if C_CDC_TYPE = 1 generate
begin
-- Primary to Secondary
SINGLE_BIT : if C_SINGLE_BIT = 1 generate
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
prmry_ack <= '0';
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
---------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
---------------------------------- begin
---------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
---------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
---------------------------------- p_level_in_d1_cdc_from <= '0';
---------------------------------- else
---------------------------------- p_level_in_d1_cdc_from <= prmry_in;
---------------------------------- end if;
---------------------------------- end if;
---------------------------------- end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------ begin
------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------ s_level_out_d2 <= '0';
------------------------------ s_level_out_d3 <= '0';
------------------------------ s_level_out_d4 <= '0';
------------------------------ s_level_out_d5 <= '0';
------------------------------ s_level_out_d6 <= '0';
------------------------------ else
------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------ end if;
------------------------------ end if;
------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_out <= s_level_out_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_out <= s_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out <= s_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out <= s_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out <= s_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out <= s_level_out_d6;
end generate MTBF_L6;
end generate SINGLE_BIT;
MULTI_BIT : if C_SINGLE_BIT = 0 generate
signal p_level_in_bus_int : std_logic_vector (C_VECTOR_WIDTH - 1 downto 0);
signal p_level_in_bus_d1_cdc_from : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d1_cdc_to : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
--attribute DONT_TOUCH of s_level_out_bus_d1_cdc_to : signal is "true";
signal s_level_out_bus_d1_cdc_tig : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d2 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d3 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d4 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d5 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
signal s_level_out_bus_d6 : std_logic_vector(C_VECTOR_WIDTH - 1 downto 0);
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d2 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d3 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d4 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d5 : SIGNAL IS "true";
-----------------ATTRIBUTE async_reg OF s_level_out_bus_d6 : SIGNAL IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_out <= '0';
prmry_ack <= '0';
INPUT_FLOP_BUS : if C_FLOP_INPUT = 1 generate
begin
----------------------------------- REG_PLEVEL_IN : process(prmry_aclk)
----------------------------------- begin
----------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
----------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------- p_level_in_bus_d1_cdc_from <= (others => '0');
----------------------------------- else
----------------------------------- p_level_in_bus_d1_cdc_from <= prmry_vect_in;
----------------------------------- end if;
----------------------------------- end if;
----------------------------------- end process REG_PLEVEL_IN;
FOR_REG_PLEVEL_IN: for i in 0 to (C_VECTOR_WIDTH-1) generate
begin
REG_PLEVEL_IN_p_level_in_bus_d1_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_bus_d1_cdc_from (i),
C => prmry_aclk,
D => prmry_vect_in (i),
R => prmry_reset2
);
end generate FOR_REG_PLEVEL_IN;
p_level_in_bus_int <= p_level_in_bus_d1_cdc_from;
end generate INPUT_FLOP_BUS;
NO_INPUT_FLOP_BUS : if C_FLOP_INPUT = 0 generate
begin
p_level_in_bus_int <= prmry_vect_in;
end generate NO_INPUT_FLOP_BUS;
FOR_IN_cdc_to: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d1_cdc_to (i),
C => scndry_aclk,
D => p_level_in_bus_int (i),
R => scndry_reset2
);
end generate FOR_IN_cdc_to;
----------------------------------------- CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
----------------------------------------- begin
----------------------------------------- if(scndry_aclk'EVENT and scndry_aclk ='1')then
----------------------------------------- if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
----------------------------------------- s_level_out_bus_d2 <= (others => '0');
----------------------------------------- s_level_out_bus_d3 <= (others => '0');
----------------------------------------- s_level_out_bus_d4 <= (others => '0');
----------------------------------------- s_level_out_bus_d5 <= (others => '0');
----------------------------------------- s_level_out_bus_d6 <= (others => '0');
----------------------------------------- else
----------------------------------------- s_level_out_bus_d2 <= s_level_out_bus_d1_cdc_to;
----------------------------------------- s_level_out_bus_d3 <= s_level_out_bus_d2;
----------------------------------------- s_level_out_bus_d4 <= s_level_out_bus_d3;
----------------------------------------- s_level_out_bus_d5 <= s_level_out_bus_d4;
----------------------------------------- s_level_out_bus_d6 <= s_level_out_bus_d5;
----------------------------------------- end if;
----------------------------------------- end if;
----------------------------------------- end process CROSS_PLEVEL_IN2SCNDRY;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d2 (i),
C => scndry_aclk,
D => s_level_out_bus_d1_cdc_to (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d2;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d3 (i),
C => scndry_aclk,
D => s_level_out_bus_d2 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d3;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d4 (i),
C => scndry_aclk,
D => s_level_out_bus_d3 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d4;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d5 (i),
C => scndry_aclk,
D => s_level_out_bus_d4 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d5;
FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6: for i in 0 to (C_VECTOR_WIDTH-1) generate
ATTRIBUTE async_reg OF CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : label IS "true";
begin
CROSS2_PLEVEL_IN2SCNDRY_s_level_out_bus_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_bus_d6 (i),
C => scndry_aclk,
D => s_level_out_bus_d5 (i),
R => scndry_reset2
);
end generate FOR_CROSS_PLEVEL_IN2SCNDRY_bus_d6;
MTBF_L1 : if C_MTBF_STAGES = 1 generate
begin
scndry_vect_out <= s_level_out_bus_d1_cdc_to;
end generate MTBF_L1;
MTBF_L2 : if C_MTBF_STAGES = 2 generate
begin
scndry_vect_out <= s_level_out_bus_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_vect_out <= s_level_out_bus_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_vect_out <= s_level_out_bus_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_vect_out <= s_level_out_bus_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_vect_out <= s_level_out_bus_d6;
end generate MTBF_L6;
end generate MULTI_BIT;
end generate GENERATE_LEVEL_P_S_CDC;
GENERATE_LEVEL_ACK_P_S_CDC : if C_CDC_TYPE = 2 generate
-- Primary to Secondary
signal p_level_in_d1_cdc_from : std_logic := '0';
signal p_level_in_int : std_logic := '0';
signal s_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of s_level_out_d1_cdc_to : signal is "true";
signal s_level_out_d2 : std_logic := '0';
signal s_level_out_d3 : std_logic := '0';
signal s_level_out_d4 : std_logic := '0';
signal s_level_out_d5 : std_logic := '0';
signal s_level_out_d6 : std_logic := '0';
signal p_level_out_d1_cdc_to : std_logic := '0';
--attribute DONT_TOUCH of p_level_out_d1_cdc_to : signal is "true";
signal p_level_out_d2 : std_logic := '0';
signal p_level_out_d3 : std_logic := '0';
signal p_level_out_d4 : std_logic := '0';
signal p_level_out_d5 : std_logic := '0';
signal p_level_out_d6 : std_logic := '0';
signal p_level_out_d7 : std_logic := '0';
signal scndry_out_int : std_logic := '0';
signal prmry_pulse_ack : std_logic := '0';
-----------------------------------------------------------------------------
-- ATTRIBUTE Declarations
-----------------------------------------------------------------------------
-- Prevent x-propagation on clock-domain crossing register
ATTRIBUTE async_reg : STRING;
ATTRIBUTE async_reg OF CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : label IS "true";
ATTRIBUTE async_reg OF CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : label IS "true";
begin
--*****************************************************************************
--** Asynchronous Level Clock Crossing **
--** PRIMARY TO SECONDARY **
--*****************************************************************************
-- register is scndry to provide clean ff output to clock crossing logic
scndry_vect_out <= (others => '0');
INPUT_FLOP : if C_FLOP_INPUT = 1 generate
begin
------------------------------------------ REG_PLEVEL_IN : process(prmry_aclk)
------------------------------------------ begin
------------------------------------------ if(prmry_aclk'EVENT and prmry_aclk ='1')then
------------------------------------------ if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------ p_level_in_d1_cdc_from <= '0';
------------------------------------------ else
------------------------------------------ p_level_in_d1_cdc_from <= prmry_in;
------------------------------------------ end if;
------------------------------------------ end if;
------------------------------------------ end process REG_PLEVEL_IN;
REG_PLEVEL_IN_cdc_from : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_in_d1_cdc_from,
C => prmry_aclk,
D => prmry_in,
R => prmry_reset2
);
p_level_in_int <= p_level_in_d1_cdc_from;
end generate INPUT_FLOP;
NO_INPUT_FLOP : if C_FLOP_INPUT = 0 generate
begin
p_level_in_int <= prmry_in;
end generate NO_INPUT_FLOP;
CROSS3_PLEVEL_IN2SCNDRY_IN_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d1_cdc_to,
C => scndry_aclk,
D => p_level_in_int,
R => scndry_reset2
);
------------------------------------------------ CROSS_PLEVEL_IN2SCNDRY : process(scndry_aclk)
------------------------------------------------ begin
------------------------------------------------ if(scndry_aclk'EVENT and scndry_aclk ='1')then
------------------------------------------------ if(scndry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
------------------------------------------------ s_level_out_d2 <= '0';
------------------------------------------------ s_level_out_d3 <= '0';
------------------------------------------------ s_level_out_d4 <= '0';
------------------------------------------------ s_level_out_d5 <= '0';
------------------------------------------------ s_level_out_d6 <= '0';
------------------------------------------------ else
------------------------------------------------ s_level_out_d2 <= s_level_out_d1_cdc_to;
------------------------------------------------ s_level_out_d3 <= s_level_out_d2;
------------------------------------------------ s_level_out_d4 <= s_level_out_d3;
------------------------------------------------ s_level_out_d5 <= s_level_out_d4;
------------------------------------------------ s_level_out_d6 <= s_level_out_d5;
------------------------------------------------ end if;
------------------------------------------------ end if;
------------------------------------------------ end process CROSS_PLEVEL_IN2SCNDRY;
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d2,
C => scndry_aclk,
D => s_level_out_d1_cdc_to,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d3,
C => scndry_aclk,
D => s_level_out_d2,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d4,
C => scndry_aclk,
D => s_level_out_d3,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d5,
C => scndry_aclk,
D => s_level_out_d4,
R => scndry_reset2
);
CROSS_PLEVEL_IN2SCNDRY_s_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => s_level_out_d6,
C => scndry_aclk,
D => s_level_out_d5,
R => scndry_reset2
);
--------------------------------------------------- CROSS_PLEVEL_SCNDRY2PRMRY : process(prmry_aclk)
--------------------------------------------------- begin
--------------------------------------------------- if(prmry_aclk'EVENT and prmry_aclk ='1')then
--------------------------------------------------- if(prmry_resetn1 = '0') then -- and C_RESET_STATE = 1)then
--------------------------------------------------- p_level_out_d1_cdc_to <= '0';
--------------------------------------------------- p_level_out_d2 <= '0';
--------------------------------------------------- p_level_out_d3 <= '0';
--------------------------------------------------- p_level_out_d4 <= '0';
--------------------------------------------------- p_level_out_d5 <= '0';
--------------------------------------------------- p_level_out_d6 <= '0';
--------------------------------------------------- p_level_out_d7 <= '0';
--------------------------------------------------- prmry_ack <= '0';
--------------------------------------------------- else
--------------------------------------------------- p_level_out_d1_cdc_to <= scndry_out_int;
--------------------------------------------------- p_level_out_d2 <= p_level_out_d1_cdc_to;
--------------------------------------------------- p_level_out_d3 <= p_level_out_d2;
--------------------------------------------------- p_level_out_d4 <= p_level_out_d3;
--------------------------------------------------- p_level_out_d5 <= p_level_out_d4;
--------------------------------------------------- p_level_out_d6 <= p_level_out_d5;
--------------------------------------------------- p_level_out_d7 <= p_level_out_d6;
--------------------------------------------------- prmry_ack <= prmry_pulse_ack;
--------------------------------------------------- end if;
--------------------------------------------------- end if;
--------------------------------------------------- end process CROSS_PLEVEL_SCNDRY2PRMRY;
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d1_cdc_to : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d1_cdc_to,
C => prmry_aclk,
D => scndry_out_int,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d2 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d2,
C => prmry_aclk,
D => p_level_out_d1_cdc_to,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d3 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d3,
C => prmry_aclk,
D => p_level_out_d2,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d4 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d4,
C => prmry_aclk,
D => p_level_out_d3,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d5 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d5,
C => prmry_aclk,
D => p_level_out_d4,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d6 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d6,
C => prmry_aclk,
D => p_level_out_d5,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_p_level_out_d7 : component FDR
generic map(INIT => '0'
)port map (
Q => p_level_out_d7,
C => prmry_aclk,
D => p_level_out_d6,
R => prmry_reset2
);
CROSS_PLEVEL_SCNDRY2PRMRY_prmry_ack : component FDR
generic map(INIT => '0'
)port map (
Q => prmry_ack,
C => prmry_aclk,
D => prmry_pulse_ack,
R => prmry_reset2
);
MTBF_L2 : if C_MTBF_STAGES = 2 or C_MTBF_STAGES = 1 generate
begin
scndry_out_int <= s_level_out_d2;
--prmry_pulse_ack <= p_level_out_d3 xor p_level_out_d2;
prmry_pulse_ack <= (not p_level_out_d3) and p_level_out_d2;
end generate MTBF_L2;
MTBF_L3 : if C_MTBF_STAGES = 3 generate
begin
scndry_out_int <= s_level_out_d3;
--prmry_pulse_ack <= p_level_out_d4 xor p_level_out_d3;
prmry_pulse_ack <= (not p_level_out_d4) and p_level_out_d3;
end generate MTBF_L3;
MTBF_L4 : if C_MTBF_STAGES = 4 generate
begin
scndry_out_int <= s_level_out_d4;
--prmry_pulse_ack <= p_level_out_d5 xor p_level_out_d4;
prmry_pulse_ack <= (not p_level_out_d5) and p_level_out_d4;
end generate MTBF_L4;
MTBF_L5 : if C_MTBF_STAGES = 5 generate
begin
scndry_out_int <= s_level_out_d5;
--prmry_pulse_ack <= p_level_out_d6 xor p_level_out_d5;
prmry_pulse_ack <= (not p_level_out_d6) and p_level_out_d5;
end generate MTBF_L5;
MTBF_L6 : if C_MTBF_STAGES = 6 generate
begin
scndry_out_int <= s_level_out_d6;
--prmry_pulse_ack <= p_level_out_d7 xor p_level_out_d6;
prmry_pulse_ack <= (not p_level_out_d7) and p_level_out_d6;
end generate MTBF_L6;
scndry_out <= scndry_out_int;
end generate GENERATE_LEVEL_ACK_P_S_CDC;
end implementation;
|
-------------------------------------------------------------------------------
--! @file prlMaster-rtl-ea.vhd
--! @brief Multiplexed memory mapped master
-------------------------------------------------------------------------------
--
-- (c) B&R, 2014
--
-- Redistribution and use in source and binary forms, with or without
-- modification, are permitted provided that the following conditions
-- are met:
--
-- 1. Redistributions of source code must retain the above copyright
-- notice, this list of conditions and the following disclaimer.
--
-- 2. Redistributions in binary form must reproduce the above copyright
-- notice, this list of conditions and the following disclaimer in the
-- documentation and/or other materials provided with the distribution.
--
-- 3. Neither the name of B&R nor the names of its
-- contributors may be used to endorse or promote products derived
-- from this software without prior written permission. For written
-- permission, please contact [email protected]
--
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-- "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
-- FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-- COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-- INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-- BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-- LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-- CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-- LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
-- ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-- POSSIBILITY OF SUCH DAMAGE.
--
-------------------------------------------------------------------------------
--! Use standard ieee library
library ieee;
--! Use logic elements
use ieee.std_logic_1164.all;
--! Use numeric std
use ieee.numeric_std.all;
--! Use libcommon library
library libcommon;
--! Use global package
use libcommon.global.all;
entity prlMaster is
generic (
--! Enable multiplexed address/data-bus mode (0 = FALSE)
gEnableMux : natural := 0;
--! Data bus width
gDataWidth : natural := 16;
--! Address bus width
gAddrWidth : natural := 16;
--! Address low
gAddrLow : natural := 0;
--! Ad bus width (valid when gEnableMux /= FALSE)
gAdWidth : natural := 16
);
port (
--! Clock
iClk : in std_logic;
--! Reset
iRst : in std_logic;
-- Memory mapped slave
--! Address
iSlv_address : in std_logic_vector(gAddrWidth-1 downto gAddrLow);
--! Read strobe
iSlv_read : in std_logic;
--! Readdata
oSlv_readdata : out std_logic_vector(gDataWidth-1 downto 0);
--! Write strobe
iSlv_write : in std_logic;
--! Writedata
iSlv_writedata : in std_logic_vector(gDataWidth-1 downto 0);
--! Waitrequest
oSlv_waitrequest : out std_logic;
--! Byteenable
iSlv_byteenable : in std_logic_vector(gDataWidth/8-1 downto 0);
-- Memory mapped multiplexed master
--! Chipselect
oPrlMst_cs : out std_logic;
-- Multiplexed AD-bus
--! Multiplexed address data bus input
iPrlMst_ad_i : in std_logic_vector(gAdWidth-1 downto 0);
--! Multiplexed address data bus output
oPrlMst_ad_o : out std_logic_vector(gAdWidth-1 downto 0);
--! Multiplexed address data bus enable
oPrlMst_ad_oen : out std_logic;
-- Demultiplexed AD-bus
--! Address bus
oPrlMst_addr : out std_logic_vector(gAddrWidth-1 downto 0);
--! Data bus in
iPrlMst_data_i : in std_logic_vector(gDataWidth-1 downto 0);
--! Data bus out
oPrlMst_data_o : out std_logic_vector(gDataWidth-1 downto 0);
--! Data bus outenable
oPrlMst_data_oen : out std_logic;
--! Byteenable
oPrlMst_be : out std_logic_vector(gDataWidth/8-1 downto 0);
--! Address latch enable
oPrlMst_ale : out std_logic;
--! Write strobe
oPrlMst_wr : out std_logic;
--! Read strobe
oPrlMst_rd : out std_logic;
--! Acknowledge
iPrlMst_ack : in std_logic
);
end entity prlMaster;
architecture rtl of prlMaster is
constant cCount_AleDisable : std_logic_vector := "011";
constant cCount_AleExit : std_logic_vector := "101";
constant cCount_max : std_logic_vector := "111";
constant cCountWidth : natural := cCount_max'length;
-- State machine for bus timing
type tFsm is (
sIdle,
sAle,
sWrd,
sHold
);
-- Synchronized ack signal
signal ack : std_logic;
-- Rising edge of ack signal
signal ack_p : std_logic;
--! This record holds all output registers to the bus.
type tReg is record
address : std_logic_vector(gAddrWidth-1 downto 0);
byteenable : std_logic_vector(gDataWidth/8-1 downto 0);
write : std_logic;
read : std_logic;
chipselect : std_logic;
data : std_logic_vector(gDataWidth-1 downto 0);
data_oen : std_logic;
data_in : std_logic_vector(gDataWidth-1 downto 0);
ad : std_logic_vector(gAdWidth-1 downto 0);
ad_oen : std_logic;
ale : std_logic;
fsm : tFsm;
count : std_logic_vector(cCountWidth-1 downto 0);
count_rst : std_logic;
end record;
-- Initialization vector of output registers
constant cRegInit : tReg := (
address => (others => cInactivated),
byteenable => (others => cInactivated),
write => cInactivated,
read => cInactivated,
chipselect => cInactivated,
data => (others => cInactivated),
data_oen => cInactivated,
data_in => (others => cInactivated),
ad => (others => cInactivated),
ad_oen => cInactivated,
ale => cInactivated,
fsm => sIdle,
count => (others => cInactivated),
count_rst => cInactivated
);
-- Register state
signal reg : tReg;
-- Next register state
signal reg_next : tReg;
begin
-- MAP IOs
oSlv_waitrequest <= not ack_p;
oSlv_readdata <= reg.data_in;
oPrlMst_be <= reg.byteenable;
oPrlMst_wr <= reg.write;
oPrlMst_rd <= reg.read;
oPrlMst_cs <= reg.chipselect;
--! Generate mux bus IOs. Demux bus is incactive.
genMux : if gEnableMux /= 0 generate
-- MUX
oPrlMst_ale <= reg.ale;
oPrlMst_ad_o <= reg.ad;
oPrlMst_ad_oen <= reg.ad_oen;
oPrlMst_addr <= (others => cInactivated);
oPrlMst_data_o <= (others => cInactivated);
oPrlMst_data_oen <= cInactivated;
-- iPrlMst_data_i is ignored
end generate genMux;
--! Generate demux bus IOs. Mux bus is incactive.
genDemux : if gEnableMux = 0 generate
-- DEMUX
oPrlMst_addr <= reg.address;
oPrlMst_data_o <= reg.data;
oPrlMst_data_oen <= reg.data_oen;
oPrlMst_ale <= cInactivated;
oPrlMst_ad_o <= (others => cInactivated);
oPrlMst_ad_oen <= cInactivated;
-- iPrlMst_ad_i is ignored
end generate genDemux;
--! This is the clock register process.
regClk : process(iRst, iClk)
begin
if iRst = cActivated then
reg <= cRegInit;
elsif rising_edge(iClk) then
reg <= reg_next;
end if;
end process regClk;
--! This is the next register state process.
combReg : process (
reg, ack,
iSlv_read,
iSlv_write,
iSlv_byteenable,
iSlv_address,
iSlv_writedata,
iPrlMst_ad_i,
iPrlMst_data_i
)
begin
-- default
reg_next <= reg;
-- counter reset active by default
reg_next.count_rst <= cActivated;
if reg.count_rst = cActivated then
reg_next.count <= (others => cInactivated);
else
reg_next.count <= std_logic_vector(unsigned(reg.count) + 1);
end if;
case reg.fsm is
when sIdle =>
reg_next.chipselect <= cInactivated;
reg_next.ale <= cInactivated;
reg_next.ad_oen <= cInactivated;
reg_next.data_oen <= cInactivated;
reg_next.read <= cInactivated;
reg_next.write <= cInactivated;
-- Start transaction if there is either a read or write.
if iSlv_write = cActivated or iSlv_read = cActivated then
reg_next.chipselect <= cActivated;
reg_next.byteenable <= iSlv_byteenable;
if gEnableMux /= 0 then
-- MUX mode
reg_next.fsm <= sAle;
reg_next.ale <= cActivated;
reg_next.ad_oen <= cActivated;
reg_next.ad <= (others => cInactivated);
reg_next.ad(iSlv_address'range) <= iSlv_address;
else
-- DEMUX mode
reg_next.fsm <= sWrd;
reg_next.write <= iSlv_write;
reg_next.read <= iSlv_read;
reg_next.data <= iSlv_writedata;
reg_next.data_oen <= iSlv_write;
reg_next.address <= iSlv_address;
end if;
end if;
when sAle =>
-- Use counter to generate ale timing.
reg_next.count_rst <= cInactivated;
if reg.count = cCount_AleDisable then
reg_next.ale <= cInactivated;
elsif reg.count = cCount_AleExit then
reg_next.count_rst <= cActivated;
reg_next.fsm <= sWrd;
reg_next.write <= iSlv_write;
reg_next.read <= iSlv_read;
reg_next.ad_oen <= iSlv_write;
reg_next.ad <= (others => cInactivated);
reg_next.ad(iSlv_writedata'range) <= iSlv_writedata;
end if;
when sWrd =>
if ack = cActivated then
reg_next.fsm <= sHold;
reg_next.count_rst <= cActivated;
reg_next.chipselect <= cInactivated;
reg_next.read <= cInactivated;
reg_next.write <= cInactivated;
reg_next.ad_oen <= cInactivated;
reg_next.data_oen <= cInactivated;
if reg.read = cActivated then
if gEnableMux /= 0 then
reg_next.data_in <= iPrlMst_ad_i(reg.data_in'range);
else
reg_next.data_in <= iPrlMst_data_i(reg.data_in'range);
end if;
end if;
end if;
when sHold =>
if ack = cInactivated then
reg_next.fsm <= sIdle;
reg_next.count_rst <= cActivated;
end if;
end case;
end process combReg;
--! Synchronizer to sync ack input.
syncAck : entity libcommon.synchronizer
generic map (
gStages => 2,
gInit => cInactivated
)
port map (
iArst => iRst,
iClk => iClk,
iAsync => iPrlMst_ack,
oSync => ack
);
--! Detect rising edge of ack signal to generate waitrequest neg. pulse.
edgeAck : entity libcommon.edgedetector
port map (
iArst => iRst,
iClk => iClk,
iEnable => cActivated,
iData => ack,
oRising => ack_p,
oFalling => open,
oAny => open
);
end architecture rtl;
|
-------------------------------------------------------------------------------
-- Copyright (C) 2014-2021 Nick Gasson
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
-- Environment package for VHDL-2008
-------------------------------------------------------------------------------
package env is
procedure stop(status : integer);
procedure stop;
procedure finish(status : integer);
procedure finish;
function resolution_limit return delay_length;
end package;
|
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