Subversion Repositories djpeg

//---------------------------------------------------------------------------

// File Name    : jpeg_idct.v

// Module Name  : jpeg_idct

// Description  : iDCT top module

// Project      : JPEG Decoder

// Belong to    : 

// Author       : H.Ishihara

// E-Mail       : hidemi@sweetcafe.jp

// HomePage     : http://www.sweetcafe.jp/

// Date         : 2008/03/19

// Rev.         : 2.00

//---------------------------------------------------------------------------

// Rev. Date         Description

//---------------------------------------------------------------------------

// 1.01 2006/10/01 1st Release

// 2.00 2008/03/19 Replace to RAM from D-FF

//---------------------------------------------------------------------------

`timescale 1ps / 1ps

module jpeg_idct(

    rst,

    clk,

    ProcessInit,

    DataInEnable,

    DataInRead,

    DataInAddress,

    DataInA,

    DataInB,

    DataOutEnable,

    DataOutPage,

    DataOutCount,

    Data0Out,

    Data1Out

);

    input               rst;

    input               clk;

    input               ProcessInit;

    input               DataInEnable;

    output              DataInRead;

    output [4:0]        DataInAddress;

    input [15:0]        DataInA;

    input [15:0]        DataInB;

    output              DataOutEnable;

    output [2:0]        DataOutPage;

    output [1:0]        DataOutCount;

    output [8:0]        Data0Out;

    output [8:0]        Data1Out;

    wire                DctXEnable;

    wire [2:0]          DctXPage;

    wire [1:0]          DctXCount;

    wire [31:0]         DctXData0r;

    wire [31:0]         DctXData1r;

    jpeg_idct_calc u_jpeg_idctx(

        .rst            ( rst           ),

        .clk            ( clk           ),

        .DataInEnable   ( DataInEnable  ),

        .DataInRead     ( DataInRead    ),

        .DataInAddress  ( DataInAddress ),

        .DataInA        ( DataInA       ),

        .DataInB        ( DataInB       ),

        .DataOutEnable  ( DctXEnable    ),

        .DataOutPage    ( DctXPage      ),

        .DataOutCount   ( DctXCount     ),

        .Data0Out       ( DctXData0r    ),

        .Data1Out       ( DctXData1r    )

    );

    wire            DctBEnable;

    wire            DctBRead;

    wire [4:0]      DctBAddress;

    wire [15:0]     DctBDataA;

    wire [15:0]     DctBDataB;

    jpeg_idctb u_jpeg_idctb(

        .rst            ( rst               ),

        .clk            ( clk               ),

        .DataInit       ( ProcessInit       ),

        .DataInEnable   ( DctXEnable        ),

        .DataInPage     ( DctXPage          ),

        .DataInCount    ( DctXCount         ),

        .DataInIdle     ( DctBIdle          ),

        .DataInA        ( DctXData0r[26:11] ),

        .DataInB        ( DctXData1r[26:11] ),

        .DataOutEnable  ( DctBEnable        ),

        .DataOutRead    ( DctBRead          ),

        .DataOutAddress ( DctBAddress       ),

        .DataOutA       ( DctBDataA         ),

        .DataOutB       ( DctBDataB         )

    );

    wire [31:0] Data0OutW, Data1OutW;

    jpeg_idct_calc u_jpeg_idcty(

        .rst            ( rst           ),

        .clk            ( clk           ),

        .DataInEnable   ( DctBEnable    ),

        .DataInRead     ( DctBRead      ),

        .DataInAddress  ( DctBAddress   ),

        .DataInA        ( DctBDataA     ),

        .DataInB        ( DctBDataB     ),

        .DataOutEnable  ( DataOutEnable ),

        .DataOutPage    ( DataOutPage   ),

        .DataOutCount   ( DataOutCount  ),

        .Data0Out       ( Data0OutW     ),

        .Data1Out       ( Data1OutW     )

    );

    assign Data0Out = Data0OutW[23:15];

    assign Data1Out = Data1OutW[23:15];

endmodule