pluto_hdl_adi/library/xilinx/common/ad_mul.v

// ***************************************************************************
// ***************************************************************************
// Copyright 2014 - 2017 (c) Analog Devices, Inc. All rights reserved.
//
// Each core or library found in this collection may have its own licensing terms. 
// The user should keep this in in mind while exploring these cores. 
//
// Redistribution and use in source and binary forms,
// with or without modification of this file, are permitted under the terms of either
//  (at the option of the user):
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//   1. The GNU General Public License version 2 as published by the
//      Free Software Foundation, which can be found in the top level directory, or at:
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//
//   2.  An ADI specific BSD license as noted in the top level directory, or on-line at:
// https://github.com/analogdevicesinc/hdl/blob/dev/LICENSE
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// ***************************************************************************
// ***************************************************************************

`timescale 1ps/1ps

module ad_mul #(

  parameter   DELAY_DATA_WIDTH = 16) (

  // data_p = data_a * data_b;

  input                   clk,
  input       [16:0]      data_a,
  input       [16:0]      data_b,
  output      [33:0]      data_p,

  // delay interface

  input       [(DELAY_DATA_WIDTH-1):0]  ddata_in,
  output  reg [(DELAY_DATA_WIDTH-1):0]  ddata_out);


  // internal registers

  reg     [(DELAY_DATA_WIDTH-1):0]    p1_ddata = 'd0;
  reg     [(DELAY_DATA_WIDTH-1):0]    p2_ddata = 'd0;

  // a/b reg, m-reg, p-reg delay match

  always @(posedge clk) begin
    p1_ddata <= ddata_in;
    p2_ddata <= p1_ddata;
    ddata_out <= p2_ddata;
  end

  MULT_MACRO #(
    .LATENCY (3),
    .WIDTH_A (17),
    .WIDTH_B (17))
  i_mult_macro (
    .CE (1'b1),
    .RST (1'b0),
    .CLK (clk),
    .A (data_a),
    .B (data_b),
    .P (data_p));

endmodule

// ***************************************************************************
// ***************************************************************************