Subversion Repositories mkjpeg

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--                                                                            --

--                          V H D L    F I L E                                --

--                          COPYRIGHT (C) 2006                                --

--                                                                            --

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

--

-- Title       : MDCT_PKG

-- Design      : MDCT Core

-- Author      : Michal Krepa

--

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

--

-- File        : MDCT_PKG.VHD

-- Created     : Sat Mar 5 2006

--

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--

--  Description : Package for MDCT core

--

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

library IEEE;

  use IEEE.STD_LOGIC_1164.all;

  use ieee.numeric_std.all;

package MDCT_PKG is

  constant IP_W                 : INTEGER := 8;

  constant OP_W                 : INTEGER := 12;

  constant N                    : INTEGER := 8;

  constant COE_W                : INTEGER := 12;

  constant ROMDATA_W            : INTEGER := COE_W+2;

  constant ROMADDR_W            : INTEGER := 6;

  constant RAMDATA_W            : INTEGER := 10;

  constant RAMADRR_W            : INTEGER := 6;

  constant COL_MAX              : INTEGER := N-1;

  constant ROW_MAX              : INTEGER := N-1;

  constant LEVEL_SHIFT          : INTEGER := 128;

  constant DA_W                 : INTEGER := ROMDATA_W+IP_W;

  constant DA2_W                : INTEGER := DA_W+2;

  -- 2's complement numbers

        constant AP : INTEGER := 1448;

        constant BP : INTEGER := 1892;

        constant CP : INTEGER := 784;

        constant DP : INTEGER := 2009;

        constant EP : INTEGER := 1703;

        constant FP : INTEGER := 1138;

        constant GP : INTEGER := 400;

        constant AM : INTEGER := -1448;

        constant BM : INTEGER := -1892;

        constant CM : INTEGER := -784;

        constant DM : INTEGER := -2009;

        constant EM : INTEGER := -1703;

        constant FM : INTEGER := -1138;

        constant GM : INTEGER := -400;

  type T_ROM1DATAO  is array(0 to 8) of STD_LOGIC_VECTOR(ROMDATA_W-1 downto 0);

  type T_ROM1ADDRO  is array(0 to 8) of STD_LOGIC_VECTOR(ROMADDR_W-1 downto 0);

  type T_ROM2DATAO  is array(0 to 10) of STD_LOGIC_VECTOR(ROMDATA_W-1 downto 0);

  type T_ROM2ADDRO  is array(0 to 10) of STD_LOGIC_VECTOR(ROMADDR_W-1 downto 0);

end MDCT_PKG;