fifo_256x20.vhd

DVB系统的SDI数据数据传输接口

-- megafunction wizard: %FIFO%
-- GENERATION: STANDARD
-- VERSION: WM1.0
-- MODULE: dcfifo 

-- ============================================================
-- File Name: fifo_256x20.vhd
-- Megafunction Name(s):
-- 			dcfifo
-- ============================================================
-- ************************************************************
-- THIS IS A WIZARD-GENERATED FILE. DO NOT EDIT THIS FILE!
--
-- 4.0 Build 190 1/28/2004 SJ Full Version
-- ************************************************************


--Copyright (C) 1991-2004 Altera Corporation
--Any  megafunction  design,  and related netlist (encrypted  or  decrypted),
--support information,  device programming or simulation file,  and any other
--associated  documentation or information  provided by  Altera  or a partner
--under  Altera's   Megafunction   Partnership   Program  may  be  used  only
--to program  PLD  devices (but not masked  PLD  devices) from  Altera.   Any
--other  use  of such  megafunction  design,  netlist,  support  information,
--device programming or simulation file,  or any other  related documentation
--or information  is prohibited  for  any  other purpose,  including, but not
--limited to  modification,  reverse engineering,  de-compiling, or use  with
--any other  silicon devices,  unless such use is  explicitly  licensed under
--a separate agreement with  Altera  or a megafunction partner.  Title to the
--intellectual property,  including patents,  copyrights,  trademarks,  trade
--secrets,  or maskworks,  embodied in any such megafunction design, netlist,
--support  information,  device programming or simulation file,  or any other
--related documentation or information provided by  Altera  or a megafunction
--partner, remains with Altera, the megafunction partner, or their respective
--licensors. No other licenses, including any licenses needed under any third
--party's intellectual property, are provided herein.


LIBRARY ieee;
USE ieee.std_logic_1164.all;

LIBRARY altera_mf;
USE altera_mf.altera_mf_components.all;

ENTITY fifo_256x20 IS
	PORT
	(
		data		: IN STD_LOGIC_VECTOR (19 DOWNTO 0);
		wrreq		: IN STD_LOGIC ;
		rdreq		: IN STD_LOGIC ;
		rdclk		: IN STD_LOGIC ;
		wrclk		: IN STD_LOGIC ;
		aclr		: IN STD_LOGIC  := '0';
		q		: OUT STD_LOGIC_VECTOR (19 DOWNTO 0);
		rdusedw		: OUT STD_LOGIC_VECTOR (7 DOWNTO 0)
	);
END fifo_256x20;


ARCHITECTURE SYN OF fifo_256x20 IS

	SIGNAL sub_wire0	: STD_LOGIC_VECTOR (19 DOWNTO 0);
	SIGNAL sub_wire1	: STD_LOGIC_VECTOR (7 DOWNTO 0);



	COMPONENT dcfifo
	GENERIC (
		intended_device_family		: STRING;
		lpm_width		: NATURAL;
		lpm_numwords		: NATURAL;
		lpm_widthu		: NATURAL;
		clocks_are_synchronized		: STRING;
		lpm_type		: STRING;
		lpm_showahead		: STRING;
		overflow_checking		: STRING;
		underflow_checking		: STRING;
		use_eab		: STRING;
		add_ram_output_register		: STRING;
		lpm_hint		: STRING
	);
	PORT (
			wrclk	: IN STD_LOGIC ;
			rdreq	: IN STD_LOGIC ;
			aclr	: IN STD_LOGIC ;
			rdclk	: IN STD_LOGIC ;
			q	: OUT STD_LOGIC_VECTOR (19 DOWNTO 0);
			wrreq	: IN STD_LOGIC ;
			data	: IN STD_LOGIC_VECTOR (19 DOWNTO 0);
			rdusedw	: OUT STD_LOGIC_VECTOR (7 DOWNTO 0)
	);
	END COMPONENT;

BEGIN
	q    <= sub_wire0(19 DOWNTO 0);
	rdusedw    <= sub_wire1(7 DOWNTO 0);

	dcfifo_component : dcfifo
	GENERIC MAP (
		intended_device_family => "Stratix GX",
		lpm_width => 20,
		lpm_numwords => 256,
		lpm_widthu => 8,
		clocks_are_synchronized => "FALSE",
		lpm_type => "dcfifo",
		lpm_showahead => "OFF",
		overflow_checking => "OFF",
		underflow_checking => "OFF",
		use_eab => "ON",
		add_ram_output_register => "OFF",
		lpm_hint => "RAM_BLOCK_TYPE=AUTO"
	)
	PORT MAP (
		wrclk => wrclk,
		rdreq => rdreq,
		aclr => aclr,
		rdclk => rdclk,
		wrreq => wrreq,
		data => data,
		q => sub_wire0,
		rdusedw => sub_wire1
	);



END SYN;

-- ============================================================
-- CNX file retrieval info
-- ============================================================
-- Retrieval info: PRIVATE: Width NUMERIC "20"
-- Retrieval info: PRIVATE: Depth NUMERIC "256"
-- Retrieval info: PRIVATE: Clock NUMERIC "4"
-- Retrieval info: PRIVATE: INTENDED_DEVICE_FAMILY STRING "Stratix GX"
-- Retrieval info: PRIVATE: CLOCKS_ARE_SYNCHRONIZED NUMERIC "0"
-- Retrieval info: PRIVATE: Full NUMERIC "1"
-- Retrieval info: PRIVATE: Empty NUMERIC "1"
-- Retrieval info: PRIVATE: UsedW NUMERIC "1"
-- Retrieval info: PRIVATE: AlmostFull NUMERIC "0"
-- Retrieval info: PRIVATE: AlmostEmpty NUMERIC "0"
-- Retrieval info: PRIVATE: AlmostFullThr NUMERIC "-1"
-- Retrieval info: PRIVATE: AlmostEmptyThr NUMERIC "-1"
-- Retrieval info: PRIVATE: sc_aclr NUMERIC "0"
-- Retrieval info: PRIVATE: sc_sclr NUMERIC "0"
-- Retrieval info: PRIVATE: rsFull NUMERIC "0"
-- Retrieval info: PRIVATE: rsEmpty NUMERIC "0"
-- Retrieval info: PRIVATE: rsUsedW NUMERIC "1"
-- Retrieval info: PRIVATE: wsFull NUMERIC "0"
-- Retrieval info: PRIVATE: wsEmpty NUMERIC "0"
-- Retrieval info: PRIVATE: wsUsedW NUMERIC "0"
-- Retrieval info: PRIVATE: dc_aclr NUMERIC "1"
-- Retrieval info: PRIVATE: LegacyRREQ NUMERIC "1"
-- Retrieval info: PRIVATE: RAM_BLOCK_TYPE NUMERIC "0"
-- Retrieval info: PRIVATE: LE_BasedFIFO NUMERIC "0"
-- Retrieval info: PRIVATE: Optimize NUMERIC "2"
-- Retrieval info: PRIVATE: OVERFLOW_CHECKING NUMERIC "1"
-- Retrieval info: PRIVATE: UNDERFLOW_CHECKING NUMERIC "1"
-- Retrieval info: PRIVATE: MEGAFN_PORT_INFO_0 STRING "data;rdclk;rdreq;wrclk;wrreq"
-- Retrieval info: PRIVATE: MEGAFN_PORT_INFO_1 STRING "aclr;q;rdempty;rdfull;wrempty"
-- Retrieval info: PRIVATE: MEGAFN_PORT_INFO_2 STRING "wrfull;rdusedw;wrusedw"
-- Retrieval info: CONSTANT: INTENDED_DEVICE_FAMILY STRING "Stratix GX"
-- Retrieval info: CONSTANT: LPM_WIDTH NUMERIC "20"
-- Retrieval info: CONSTANT: LPM_NUMWORDS NUMERIC "256"
-- Retrieval info: CONSTANT: LPM_WIDTHU NUMERIC "8"
-- Retrieval info: CONSTANT: CLOCKS_ARE_SYNCHRONIZED STRING "FALSE"
-- Retrieval info: CONSTANT: LPM_TYPE STRING "dcfifo"
-- Retrieval info: CONSTANT: LPM_SHOWAHEAD STRING "OFF"
-- Retrieval info: CONSTANT: OVERFLOW_CHECKING STRING "OFF"
-- Retrieval info: CONSTANT: UNDERFLOW_CHECKING STRING "OFF"
-- Retrieval info: CONSTANT: USE_EAB STRING "ON"
-- Retrieval info: CONSTANT: ADD_RAM_OUTPUT_REGISTER STRING "OFF"
-- Retrieval info: CONSTANT: LPM_HINT STRING "RAM_BLOCK_TYPE=AUTO"
-- Retrieval info: USED_PORT: data 0 0 20 0 INPUT NODEFVAL data[19..0]
-- Retrieval info: USED_PORT: q 0 0 20 0 OUTPUT NODEFVAL q[19..0]
-- Retrieval info: USED_PORT: wrreq 0 0 0 0 INPUT NODEFVAL wrreq
-- Retrieval info: USED_PORT: rdreq 0 0 0 0 INPUT NODEFVAL rdreq
-- Retrieval info: USED_PORT: rdclk 0 0 0 0 INPUT NODEFVAL rdclk
-- Retrieval info: USED_PORT: wrclk 0 0 0 0 INPUT NODEFVAL wrclk
-- Retrieval info: USED_PORT: rdusedw 0 0 8 0 OUTPUT NODEFVAL rdusedw[7..0]
-- Retrieval info: USED_PORT: aclr 0 0 0 0 INPUT GND aclr
-- Retrieval info: CONNECT: @data 0 0 20 0 data 0 0 20 0
-- Retrieval info: CONNECT: q 0 0 20 0 @q 0 0 20 0
-- Retrieval info: CONNECT: @wrreq 0 0 0 0 wrreq 0 0 0 0
-- Retrieval info: CONNECT: @rdreq 0 0 0 0 rdreq 0 0 0 0
-- Retrieval info: CONNECT: @rdclk 0 0 0 0 rdclk 0 0 0 0
-- Retrieval info: CONNECT: @wrclk 0 0 0 0 wrclk 0 0 0 0
-- Retrieval info: CONNECT: rdusedw 0 0 8 0 @rdusedw 0 0 8 0
-- Retrieval info: CONNECT: @aclr 0 0 0 0 aclr 0 0 0 0
-- Retrieval info: LIBRARY: altera_mf altera_mf.altera_mf_components.all
-- Retrieval info: GEN_FILE: TYPE_NORMAL fifo_256x20.vhd TRUE
-- Retrieval info: GEN_FILE: TYPE_NORMAL fifo_256x20.inc FALSE
-- Retrieval info: GEN_FILE: TYPE_NORMAL fifo_256x20.cmp FALSE
-- Retrieval info: GEN_FILE: TYPE_NORMAL fifo_256x20.bsf FALSE
-- Retrieval info: GEN_FILE: TYPE_NORMAL fifo_256x20_inst.vhd FALSE
-- Retrieval info: GEN_FILE: TYPE_NORMAL fifo_256x20_waveforms.html TRUE
-- Retrieval info: GEN_FILE: TYPE_NORMAL fifo_256x20_wave*.jpg FALSE