Subversion Repositories fpga-median

/* --------------------------------------------------------------------------------

 This file is part of FPGA Median Filter.

    FPGA Median Filter 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.

    FPGA Median Filter 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 FPGA Median Filter.  If not, see <http://www.gnu.org/licenses/>.

-------------------------------------------------------------------------------- */

/* +----------------------------------------------------------------------------

   Universidade Federal da Bahia

  ------------------------------------------------------------------------------

   PROJECT: FPGA Median Filter

  ------------------------------------------------------------------------------

   FILE NAME            : pixel_network.v

   AUTHOR               : João Carlos Bittencourt

   AUTHOR'S E-MAIL      : joaocarlos@ieee.org

   -----------------------------------------------------------------------------

   RELEASE HISTORY

   VERSION  DATE        AUTHOR        DESCRIPTION

   1.0      2013-08-13  joao.nunes    initial version

   -----------------------------------------------------------------------------

   KEYWORDS: dff, flip-flop, register bank

   -----------------------------------------------------------------------------

   PURPOSE: Group median pipeline registers.

   ----------------------------------------------------------------------------- */

module dff_3_pipe

#(

    parameter DATA_WIDTH = 8

)(

    input clk,

    input rst_n,

    input [DATA_WIDTH-1:0] d0,

    input [DATA_WIDTH-1:0] d1,

    input [DATA_WIDTH-1:0] d2,

    output reg [DATA_WIDTH-1:0] q0,

    output reg [DATA_WIDTH-1:0] q1,

    output reg [DATA_WIDTH-1:0] q2

);

always @(posedge clk or negedge rst_n)

begin : register_bank_3u

    if(~rst_n) begin

        q0 <= {DATA_WIDTH{1'b0}};

        q1 <= {DATA_WIDTH{1'b0}};

        q2 <= {DATA_WIDTH{1'b0}};

    end else begin

        q0 <= d0;

        q1 <= d1;

        q2 <= d2;

    end

end

endmodule