pluto_hdl_adi/library/common/altera/ad_mul_u16_alt.v

113 lines
4.1 KiB
Verilog

// ***************************************************************************
// ***************************************************************************
// Copyright 2014(c) Analog Devices, Inc.
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
// - Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// - 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.
// - Neither the name of Analog Devices, Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
// - The use of this software may or may not infringe the patent rights
// of one or more patent holders. This license does not release you
// from the requirement that you obtain separate licenses from these
// patent holders to use this software.
// - Use of the software either in source or binary form, must be run
// on or directly connected to an Analog Devices Inc. component.
//
// THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
// INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A
// PARTICULAR PURPOSE ARE DISCLAIMED.
//
// IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, INTELLECTUAL PROPERTY
// RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
// BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// ***************************************************************************
// ***************************************************************************
// ***************************************************************************
// ***************************************************************************
// both inputs are considered unsigned 16 bits-
// ddata is delay matched generic data
`timescale 1ps/1ps
module ad_mul_u16 (
// data_p = data_a * data_b;
clk,
data_a,
data_b,
data_p,
// delay interface
ddata_in,
ddata_out);
// delayed data bus width
parameter DELAY_DATA_WIDTH = 16;
localparam DW = DELAY_DATA_WIDTH - 1;
// data_p = data_a * data_b;
input clk;
input [15:0] data_a;
input [15:0] data_b;
output [31:0] data_p;
// delay interface
input [DW:0] ddata_in;
output [DW:0] ddata_out;
// internal registers
reg [DW:0] p1_ddata = 'd0;
reg [DW:0] p2_ddata = 'd0;
reg [DW:0] ddata_out = 'd0;
// internal signals
// 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
lpm_mult i_mult_macro (
.clock (clk),
.dataa (data_a),
.datab (data_b),
.result (data_p),
.aclr (1'b0),
.clken (1'b1),
.sum (1'b0));
defparam
lpm_mult_component.lpm_hint = "MAXIMIZE_SPEED=5",
lpm_mult_component.lpm_pipeline = 3,
lpm_mult_component.lpm_representation = "UNSIGNED",
lpm_mult_component.lpm_type = "LPM_MULT",
lpm_mult_component.lpm_widtha = 16,
lpm_mult_component.lpm_widthb = 16,
lpm_mult_component.lpm_widthp = 32;
endmodule
// ***************************************************************************
// ***************************************************************************