89 lines
2.9 KiB
Verilog
89 lines
2.9 KiB
Verilog
// ***************************************************************************
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// ***************************************************************************
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// Copyright 2014 - 2017 (c) Analog Devices, Inc. All rights reserved.
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//
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// In this HDL repository, there are many different and unique modules, consisting
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// of various HDL (Verilog or VHDL) components. The individual modules are
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// developed independently, and may be accompanied by separate and unique license
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// terms.
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//
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// The user should read each of these license terms, and understand the
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// freedoms and responsabilities that he or she has by using this source/core.
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//
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// This core is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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// A PARTICULAR PURPOSE.
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//
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// Redistribution and use of source or resulting binaries, with or without modification
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// of this file, are permitted under one of the following two license terms:
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//
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// 1. The GNU General Public License version 2 as published by the
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// Free Software Foundation, which can be found in the top level directory
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// of this repository (LICENSE_GPL2), and also online at:
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// <https://www.gnu.org/licenses/old-licenses/gpl-2.0.html>
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//
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// OR
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//
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// 2. An ADI specific BSD license, which can be found in the top level directory
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// of this repository (LICENSE_ADIBSD), and also on-line at:
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// https://github.com/analogdevicesinc/hdl/blob/master/LICENSE_ADIBSD
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// This will allow to generate bit files and not release the source code,
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// as long as it attaches to an ADI device.
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//
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// ***************************************************************************
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// ***************************************************************************
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`timescale 1ps/1ps
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module ad_mul #(
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parameter DELAY_DATA_WIDTH = 16) (
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// data_p = data_a * data_b;
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input clk,
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input [16:0] data_a,
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input [16:0] data_b,
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output [33:0] data_p,
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// delay interface
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input [(DELAY_DATA_WIDTH-1):0] ddata_in,
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output reg [(DELAY_DATA_WIDTH-1):0] ddata_out);
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// internal registers
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reg [(DELAY_DATA_WIDTH-1):0] p1_ddata = 'd0;
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reg [(DELAY_DATA_WIDTH-1):0] p2_ddata = 'd0;
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// a/b reg, m-reg, p-reg delay match
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always @(posedge clk) begin
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p1_ddata <= ddata_in;
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p2_ddata <= p1_ddata;
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ddata_out <= p2_ddata;
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end
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lpm_mult #(
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.lpm_type ("lpm_mult"),
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.lpm_widtha (17),
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.lpm_widthb (17),
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.lpm_widthp (34),
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.lpm_representation ("SIGNED"),
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.lpm_pipeline (3))
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i_lpm_mult (
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.clken (1'b1),
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.aclr (1'b0),
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.sclr (1'b0),
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.sum (1'b0),
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.clock (clk),
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.dataa (data_a),
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.datab (data_b),
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.result (data_p));
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endmodule
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// ***************************************************************************
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// ***************************************************************************
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