Subversion Repositories sgmii

/*

Copyright © 2012 JeffLieu-lieumychuong@gmail.com

        This file is part of SGMII-IP-Core.

    SGMII-IP-Core 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.

    SGMII-IP-Core 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 SGMII-IP-Core.  If not, see <http://www.gnu.org/licenses/>.

File            :       sgmii_demo.v

Description     :       This file implements top-level file to test SGMII core

Remarks         :

Revision        :

        Date    Author  Description

*/

module mPshBtnDbnce #(parameter pDbncePeriod=8191,pDbncerWidth=13)(

        input i_Clk,

        input i_PshBtn,

        output reg o_Dbnced);

        reg r_PshBtnIn_D1;

        reg r_PshBtnIn_D2;

        reg r_PshBtnIn_D3;

        reg [pDbncerWidth-1:0] rv_Dbncer;

        always@(posedge i_Clk)

                begin

                        r_PshBtnIn_D1 <= i_PshBtn;

                        r_PshBtnIn_D2 <= r_PshBtnIn_D1;

                    r_PshBtnIn_D3 <= r_PshBtnIn_D2;

                        if(r_PshBtnIn_D3^r_PshBtnIn_D2) rv_Dbncer <= pDbncePeriod;

                        else begin

                                if(~(|rv_Dbncer)) rv_Dbncer<=rv_Dbncer-1;

                                else o_Dbnced <= r_PshBtnIn_D3;

                                end

                end

endmodule