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