fifo_tx.v

FPGA之间的LVDS传输

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// The synthesis directives "translate_off/translate_on" specified below are
// supported by Xilinx, Mentor Graphics and Synplicity synthesis
// tools. Ensure they are correct for your synthesis tool(s).

// You must compile the wrapper file fifo_tx.v when simulating
// the core, fifo_tx. When compiling the wrapper file, be sure to
// reference the XilinxCoreLib Verilog simulation library. For detailed
// instructions, please refer to the "CORE Generator Help".

`timescale 1ns/1ps

module fifo_tx(
	din,
	rd_clk,
	rd_en,
	rst,
	wr_clk,
	wr_en,
	almost_empty,
	almost_full,
	dout,
	empty,
	full);


input [63 : 0] din;
input rd_clk;
input rd_en;
input rst;
input wr_clk;
input wr_en;
output almost_empty;
output almost_full;
output [63 : 0] dout;
output empty;
output full;

// synthesis translate_off

      FIFO_GENERATOR_V4_3 #(
		.C_COMMON_CLOCK(0),
		.C_COUNT_TYPE(0),
		.C_DATA_COUNT_WIDTH(6),
		.C_DEFAULT_VALUE("BlankString"),
		.C_DIN_WIDTH(64),
		.C_DOUT_RST_VAL("0"),
		.C_DOUT_WIDTH(64),
		.C_ENABLE_RLOCS(0),
		.C_FAMILY("virtex5"),
		.C_FULL_FLAGS_RST_VAL(1),
		.C_HAS_ALMOST_EMPTY(1),
		.C_HAS_ALMOST_FULL(1),
		.C_HAS_BACKUP(0),
		.C_HAS_DATA_COUNT(0),
		.C_HAS_INT_CLK(0),
		.C_HAS_MEMINIT_FILE(0),
		.C_HAS_OVERFLOW(0),
		.C_HAS_RD_DATA_COUNT(0),
		.C_HAS_RD_RST(0),
		.C_HAS_RST(1),
		.C_HAS_SRST(0),
		.C_HAS_UNDERFLOW(0),
		.C_HAS_VALID(0),
		.C_HAS_WR_ACK(0),
		.C_HAS_WR_DATA_COUNT(0),
		.C_HAS_WR_RST(0),
		.C_IMPLEMENTATION_TYPE(2),
		.C_INIT_WR_PNTR_VAL(0),
		.C_MEMORY_TYPE(1),
		.C_MIF_FILE_NAME("BlankString"),
		.C_MSGON_VAL(1),
		.C_OPTIMIZATION_MODE(0),
		.C_OVERFLOW_LOW(0),
		.C_PRELOAD_LATENCY(1),
		.C_PRELOAD_REGS(0),
		.C_PRIM_FIFO_TYPE("512x72"),
		.C_PROG_EMPTY_THRESH_ASSERT_VAL(2),
		.C_PROG_EMPTY_THRESH_NEGATE_VAL(3),
		.C_PROG_EMPTY_TYPE(0),
		.C_PROG_FULL_THRESH_ASSERT_VAL(61),
		.C_PROG_FULL_THRESH_NEGATE_VAL(60),
		.C_PROG_FULL_TYPE(0),
		.C_RD_DATA_COUNT_WIDTH(6),
		.C_RD_DEPTH(64),
		.C_RD_FREQ(1),
		.C_RD_PNTR_WIDTH(6),
		.C_UNDERFLOW_LOW(0),
		.C_USE_DOUT_RST(1),
		.C_USE_ECC(0),
		.C_USE_EMBEDDED_REG(0),
		.C_USE_FIFO16_FLAGS(0),
		.C_USE_FWFT_DATA_COUNT(0),
		.C_VALID_LOW(0),
		.C_WR_ACK_LOW(0),
		.C_WR_DATA_COUNT_WIDTH(6),
		.C_WR_DEPTH(64),
		.C_WR_FREQ(1),
		.C_WR_PNTR_WIDTH(6),
		.C_WR_RESPONSE_LATENCY(1))
	inst (
		.DIN(din),
		.RD_CLK(rd_clk),
		.RD_EN(rd_en),
		.RST(rst),
		.WR_CLK(wr_clk),
		.WR_EN(wr_en),
		.ALMOST_EMPTY(almost_empty),
		.ALMOST_FULL(almost_full),
		.DOUT(dout),
		.EMPTY(empty),
		.FULL(full),
		.CLK(),
		.INT_CLK(),
		.BACKUP(),
		.BACKUP_MARKER(),
		.PROG_EMPTY_THRESH(),
		.PROG_EMPTY_THRESH_ASSERT(),
		.PROG_EMPTY_THRESH_NEGATE(),
		.PROG_FULL_THRESH(),
		.PROG_FULL_THRESH_ASSERT(),
		.PROG_FULL_THRESH_NEGATE(),
		.RD_RST(),
		.SRST(),
		.WR_RST(),
		.DATA_COUNT(),
		.OVERFLOW(),
		.PROG_EMPTY(),
		.PROG_FULL(),
		.VALID(),
		.RD_DATA_COUNT(),
		.UNDERFLOW(),
		.WR_ACK(),
		.WR_DATA_COUNT(),
		.SBITERR(),
		.DBITERR());


// synthesis translate_on

// XST black box declaration
// box_type "black_box"
// synthesis attribute box_type of fifo_tx is "black_box"

endmodule