Subversion Repositories mpmc8

`timescale 1ns / 1ps
// ============================================================================
//        __
//   \\__/ o\    (C) 2015-2022  Robert Finch, Waterloo
//    \  __ /    All rights reserved.
//     \/_//     robfinch<remove>@finitron.ca
//       ||
//
// BSD 3-Clause License
// 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.
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// 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.
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//    this software without specific prior written permission.
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// ============================================================================
//
import mpmc10_pkg::*;

module mpmc10_fifo(rst, clk, rd_fifo, wr_fifo, req_fifoi, req_fifoo, v,
        full, empty, almost_full, rd_rst_busy, wr_rst_busy, cnt);
input rst;
input clk;
input rd_fifo;
input wr_fifo;
input wb_cmd_request128_t req_fifoi;
output wb_cmd_request128_t req_fifoo;
output v;
output full;
output empty;
output almost_full;
output rd_rst_busy;
output wr_rst_busy;
output [4:0] cnt;

xpm_fifo_sync #(
  .DOUT_RESET_VALUE("0"),    // String
  .ECC_MODE("no_ecc"),       // String
  .FIFO_MEMORY_TYPE("distributed"), // String
  .FIFO_READ_LATENCY(1),     // DECIMAL
  .FIFO_WRITE_DEPTH(32),   // DECIMAL
  .FULL_RESET_VALUE(0),      // DECIMAL
  .PROG_EMPTY_THRESH(3),    // DECIMAL
  .PROG_FULL_THRESH(27),     // DECIMAL
  .RD_DATA_COUNT_WIDTH(5),   // DECIMAL
  .READ_DATA_WIDTH($bits(wb_cmd_request128_t)),      // DECIMAL
  .READ_MODE("std"),         // String
  .SIM_ASSERT_CHK(0),        // DECIMAL; 0=disable simulation messages, 1=enable simulation messages
  .USE_ADV_FEATURES("070F"), // String
  .WAKEUP_TIME(0),           // DECIMAL
  .WRITE_DATA_WIDTH($bits(wb_cmd_request128_t)),     // DECIMAL
  .WR_DATA_COUNT_WIDTH(5)    // DECIMAL
)
xpm_fifo_sync_inst (
  .almost_empty(),   // 1-bit output: Almost Empty : When asserted, this signal indicates that
                                 // only one more read can be performed before the FIFO goes to empty.

  .almost_full(almost_full),     // 1-bit output: Almost Full: When asserted, this signal indicates that
                                 // only one more write can be performed before the FIFO is full.

  .data_valid(v),       // 1-bit output: Read Data Valid: When asserted, this signal indicates
                                 // that valid data is available on the output bus (dout).

  .dbiterr(),             // 1-bit output: Double Bit Error: Indicates that the ECC decoder detected
                                 // a double-bit error and data in the FIFO core is corrupted.

  .dout(req_fifoo),                   // READ_DATA_WIDTH-bit output: Read Data: The output data bus is driven
                                 // when reading the FIFO.

  .empty(empty),                 // 1-bit output: Empty Flag: When asserted, this signal indicates that the
                                 // FIFO is empty. Read requests are ignored when the FIFO is empty,
                                 // initiating a read while empty is not destructive to the FIFO.

  .full(full),                   // 1-bit output: Full Flag: When asserted, this signal indicates that the
                                 // FIFO is full. Write requests are ignored when the FIFO is full,
                                 // initiating a write when the FIFO is full is not destructive to the
                                 // contents of the FIFO.

  .overflow(),           // 1-bit output: Overflow: This signal indicates that a write request
                                 // (wren) during the prior clock cycle was rejected, because the FIFO is
                                 // full. Overflowing the FIFO is not destructive to the contents of the
                                 // FIFO.

  .prog_empty(),       // 1-bit output: Programmable Empty: This signal is asserted when the
                                 // number of words in the FIFO is less than or equal to the programmable
                                 // empty threshold value. It is de-asserted when the number of words in
                                 // the FIFO exceeds the programmable empty threshold value.

  .prog_full(),         // 1-bit output: Programmable Full: This signal is asserted when the
                                 // number of words in the FIFO is greater than or equal to the
                                 // programmable full threshold value. It is de-asserted when the number of
                                 // words in the FIFO is less than the programmable full threshold value.

  .rd_data_count(), // RD_DATA_COUNT_WIDTH-bit output: Read Data Count: This bus indicates the
                                 // number of words read from the FIFO.

  .rd_rst_busy(rd_rst_busy),     // 1-bit output: Read Reset Busy: Active-High indicator that the FIFO read
                                 // domain is currently in a reset state.

  .sbiterr(),             // 1-bit output: Single Bit Error: Indicates that the ECC decoder detected
                                 // and fixed a single-bit error.

  .underflow(),         // 1-bit output: Underflow: Indicates that the read request (rd_en) during
                                 // the previous clock cycle was rejected because the FIFO is empty. Under
                                 // flowing the FIFO is not destructive to the FIFO.

  .wr_ack(),               // 1-bit output: Write Acknowledge: This signal indicates that a write
                                 // request (wr_en) during the prior clock cycle is succeeded.

  .wr_data_count(cnt),                                  // WR_DATA_COUNT_WIDTH-bit output: Write Data Count: This bus indicates
                                 // the number of words written into the FIFO.

  .wr_rst_busy(wr_rst_busy),                                            // 1-bit output: Write Reset Busy: Active-High indicator that the FIFO
                                 // write domain is currently in a reset state.

  .din(req_fifoi),           // WRITE_DATA_WIDTH-bit input: Write Data: The input data bus used when
                                 // writing the FIFO.

  .injectdbiterr(1'b0), // 1-bit input: Double Bit Error Injection: Injects a double bit error if
                                 // the ECC feature is used on block RAMs or UltraRAM macros.

  .injectsbiterr(1'b0), // 1-bit input: Single Bit Error Injection: Injects a single bit error if
                                 // the ECC feature is used on block RAMs or UltraRAM macros.

  .rd_en(rd_fifo & ~rd_rst_busy), // 1-bit input: Read Enable: If the FIFO is not empty, asserting this
                                 // signal causes data (on dout) to be read from the FIFO. Must be held
                                 // active-low when rd_rst_busy is active high.

  .rst(rst),                     // 1-bit input: Reset: Must be synchronous to wr_clk. The clock(s) can be
                                 // unstable at the time of applying reset, but reset must be released only
                                 // after the clock(s) is/are stable.

  .sleep(1'b0),                  // 1-bit input: Dynamic power saving- If sleep is High, the memory/fifo
                                 // block is in power saving mode.

  .wr_clk(clk),                                          // 1-bit input: Write clock: Used for write operation. wr_clk must be a
                                 // free running clock.

  .wr_en(wr_fifo & ~wr_rst_busy) // 1-bit input: Write Enable: If the FIFO is not full, asserting this
                                 // signal causes data (on din) to be written to the FIFO Must be held
                                 // active-low when rst or wr_rst_busy or rd_rst_busy is active high

);

endmodule