dly_var.v 2.37 KB
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/*!
 * <b>Module:</b>dly_var
 * @file dly_var.v
 * @author Andrey Filippov
 *
 * @brief Synchronous delay by 1-16 clock cycles with reset (will map to primitives)
 *
 * @copyright Copyright (c) 2016 Elphel, Inc.
 *
 * <b>License:</b>
 *
 * dly_var.v is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 *  dly_var.v is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/> .
 *
 * Additional permission under GNU GPL version 3 section 7:
 * If you modify this Program, or any covered work, by linking or combining it
 * with independent modules provided by the FPGA vendor only (this permission
 * does not extend to any 3-rd party modules, "soft cores" or macros) under
 * different license terms solely for the purpose of generating binary "bitstream"
 * files and/or simulating the code, the copyright holders of this Program give
 * you the right to distribute the covered work without those independent modules
 * as long as the source code for them is available from the FPGA vendor free of
 * charge, and there is no dependence on any encrypted modules for simulating of
 * the combined code. This permission applies to you if the distributed code
 * contains all the components and scripts required to completely simulate it
 * with at least one of the Free Software programs.
 */
`timescale 1ns/1ps

module  dly_var #(
    parameter WIDTH =     1,
    parameter DLY_WIDTH = 4
)(
    input                 clk,
    input                 rst,
    input [DLY_WIDTH-1:0] dly,
    input     [WIDTH-1:0] din,
    output    [WIDTH-1:0] dout
);
  generate
    genvar i;
    for (i=0; i < WIDTH; i=i+1) begin: bit_block
        dly01_var #(
            .WIDTH (DLY_WIDTH)
         ) dly01_var_i ( 
            .clk(clk), // input
            .rst(rst), // input
            .dly(dly), // input[3:0] 
            .din(din[i]), // input
            .dout(dout[i]) // output reg 
        );
    end
  endgenerate
endmodule