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peteralieb |
//-----------------------------------------------------------------------------
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// Title : 10/100/1G Ethernet FIFO for 8-bit client I/F
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// Project : Virtex-5 Ethernet MAC Wrappers
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//-----------------------------------------------------------------------------
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// File : eth_fifo_8.v
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// Author : Xilinx
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//-----------------------------------------------------------------------------
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// Copyright (c) 2004-2008 by Xilinx, Inc. All rights reserved.
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// This text/file contains proprietary, confidential
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// information of Xilinx, Inc., is distributed under license
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// from Xilinx, Inc., and may be used, copied and/or
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// disclosed only pursuant to the terms of a valid license
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// agreement with Xilinx, Inc. Xilinx hereby grants you
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// a license to use this text/file solely for design, simulation,
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// implementation and creation of design files limited
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// to Xilinx devices or technologies. Use with non-Xilinx
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// devices or technologies is expressly prohibited and
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// immediately terminates your license unless covered by
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// a separate agreement.
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//
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// Xilinx is providing this design, code, or information
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// "as is" solely for use in developing programs and
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// solutions for Xilinx devices. By providing this design,
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// code, or information as one possible implementation of
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// this feature, application or standard, Xilinx is making no
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// representation that this implementation is free from any
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// claims of infringement. You are responsible for
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// obtaining any rights you may require for your implementation.
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// Xilinx expressly disclaims any warranty whatsoever with
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// respect to the adequacy of the implementation, including
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// but not limited to any warranties or representations that this
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// implementation is free from claims of infringement, implied
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// warranties of merchantability or fitness for a particular
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// purpose.
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//
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// Xilinx products are not intended for use in life support
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// appliances, devices, or systems. Use in such applications are
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// expressly prohibited.
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//
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// This copyright and support notice must be retained as part
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// of this text at all times. (c) Copyright 2004-2008 Xilinx, Inc.
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// All rights reserved.
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//-----------------------------------------------------------------------------
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// Description: This is the top level wrapper for the 10/100/1G Ethernet FIFO.
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// The top level wrapper consists of individual fifos on the
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// transmitter path and on the receiver path.
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//
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// Each path consists of an 8 bit local link to 8 bit client
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// interface FIFO.
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//-----------------------------------------------------------------------------
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`timescale 1ps / 1ps
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module eth_fifo_8
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(
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// Transmit FIFO MAC TX Interface
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tx_clk, // MAC transmit clock
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tx_reset, // Synchronous reset (tx_clk)
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tx_enable, // Clock enable for tx_clk
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tx_data, // Data to MAC transmitter
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tx_data_valid, // Valid signal to MAC transmitter
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tx_ack, // Ack signal from MAC transmitter
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tx_underrun, // Underrun signal to MAC transmitter
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tx_collision, // Collsion signal from MAC transmitter
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tx_retransmit, // Retransmit signal from MAC transmitter
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// Transmit FIFO Local-link Interface
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tx_ll_clock, // Local link write clock
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tx_ll_reset, // synchronous reset (tx_ll_clock)
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tx_ll_data_in, // Data to Tx FIFO
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tx_ll_sof_in_n, // sof indicator to FIFO
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tx_ll_eof_in_n, // eof indicator to FIFO
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tx_ll_src_rdy_in_n, // src ready indicator to FIFO
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tx_ll_dst_rdy_out_n, // dst ready indicator from FIFO
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tx_fifo_status, // FIFO memory status
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tx_overflow, // FIFO overflow indicator from FIFO
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// Receive FIFO MAC RX Interface
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rx_clk, // MAC receive clock
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rx_reset, // Synchronous reset (rx_clk)
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rx_enable, // Clock enable for rx_clk
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rx_data, // Data from MAC receiver
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rx_data_valid, // Valid signal from MAC receiver
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rx_good_frame, // Good frame indicator from MAC receiver
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rx_bad_frame, // Bad frame indicator from MAC receiver
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rx_overflow, // FIFO overflow indicator from FIFO
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// Receive FIFO Local-link Interface
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rx_ll_clock, // Local link read clock
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rx_ll_reset, // synchronous reset (rx_ll_clock)
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rx_ll_data_out, // Data from Rx FIFO
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rx_ll_sof_out_n, // sof indicator from FIFO
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rx_ll_eof_out_n, // eof indicator from FIFO
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rx_ll_src_rdy_out_n, // src ready indicator from FIFO
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rx_ll_dst_rdy_in_n, // dst ready indicator to FIFO
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rx_fifo_status // FIFO memory status
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);
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//---------------------------------------------------------------------------
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// Define Interface Signals
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//---------------------------------------------------------------------------
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parameter FULL_DUPLEX_ONLY = 0;
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// Transmit FIFO MAC TX Interface
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input tx_clk;
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input tx_reset;
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input tx_enable;
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output [7:0] tx_data;
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output tx_data_valid;
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input tx_ack;
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output tx_underrun;
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input tx_collision;
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input tx_retransmit;
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// Transmit FIFO Local-link Interface
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input tx_ll_clock;
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input tx_ll_reset;
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input [7:0] tx_ll_data_in;
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input tx_ll_sof_in_n;
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input tx_ll_eof_in_n;
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input tx_ll_src_rdy_in_n;
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output tx_ll_dst_rdy_out_n;
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output [3:0] tx_fifo_status;
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output tx_overflow;
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// Receive FIFO MAC RX Interface
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input rx_clk;
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input rx_reset;
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input rx_enable;
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input [7:0] rx_data;
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input rx_data_valid;
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input rx_good_frame;
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input rx_bad_frame;
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output rx_overflow;
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// Receive FIFO Local-link Interface
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input rx_ll_clock;
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input rx_ll_reset;
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output [7:0] rx_ll_data_out;
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output rx_ll_sof_out_n;
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output rx_ll_eof_out_n;
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output rx_ll_src_rdy_out_n;
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input rx_ll_dst_rdy_in_n;
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output [3:0] rx_fifo_status;
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assign tx_underrun = 1'b0;
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// Transmitter FIFO
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defparam tx_fifo_i.FULL_DUPLEX_ONLY = FULL_DUPLEX_ONLY;
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tx_client_fifo_8 tx_fifo_i (
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.rd_clk (tx_clk),
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.rd_sreset (tx_reset),
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.rd_enable (tx_enable),
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.tx_data (tx_data),
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.tx_data_valid (tx_data_valid),
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.tx_ack (tx_ack),
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.tx_collision (tx_collision),
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.tx_retransmit (tx_retransmit),
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.overflow (tx_overflow),
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.wr_clk (tx_ll_clock),
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.wr_sreset (tx_ll_reset),
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.wr_data (tx_ll_data_in),
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.wr_sof_n (tx_ll_sof_in_n),
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.wr_eof_n (tx_ll_eof_in_n),
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.wr_src_rdy_n (tx_ll_src_rdy_in_n),
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.wr_dst_rdy_n (tx_ll_dst_rdy_out_n),
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.wr_fifo_status (tx_fifo_status)
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);
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// Receiver FIFO
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rx_client_fifo_8 rx_fifo_i (
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.wr_clk (rx_clk),
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.wr_enable (rx_enable),
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.wr_sreset (rx_reset),
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.rx_data (rx_data),
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.rx_data_valid (rx_data_valid),
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.rx_good_frame (rx_good_frame),
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.rx_bad_frame (rx_bad_frame),
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.overflow (rx_overflow),
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.rd_clk (rx_ll_clock),
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.rd_sreset (rx_ll_reset),
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.rd_data_out (rx_ll_data_out),
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.rd_sof_n (rx_ll_sof_out_n),
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.rd_eof_n (rx_ll_eof_out_n),
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.rd_src_rdy_n (rx_ll_src_rdy_out_n),
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.rd_dst_rdy_n (rx_ll_dst_rdy_in_n),
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.rx_fifo_status (rx_fifo_status)
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);
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endmodule
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