keymem_struct.vhd

VHDL to System C translator

-------------------------------------------------------------------------------
--                                                                           --
--  AES86 - VHDL 128bits AES IP Core                                         --
--  Copyright (C) 2005-2007 HT-LAB                                           --
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-------------------------------------------------------------------------------
--                                                                           --
--  This library is free software; you can redistribute it and/or            --
--  modify it under the terms of the GNU Lesser General Public               --
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-------------------------------------------------------------------------------
LIBRARY ieee;
USE ieee.std_logic_1164.all;
USE ieee.std_logic_arith.all;

ENTITY keymem IS
   PORT( 
      addrmux  : IN     std_logic;
      addrmux0 : IN     std_logic_vector (3 DOWNTO 0);
      addrmux1 : IN     std_logic_vector (3 DOWNTO 0);
      clk      : IN     std_logic;
      din128   : IN     std_logic_vector (127 DOWNTO 0);
      we       : IN     std_logic;
      dout128  : OUT    std_logic_vector (127 DOWNTO 0)
   );

-- Declarations

END keymem ;

ARCHITECTURE struct_sync OF keymem IS

   -- Architecture declarations

   -- Internal signal declarations
   SIGNAL addr : std_logic_vector(3 DOWNTO 0);


   -- Component Declarations
   COMPONENT ssram
   PORT (
      addr    : IN     std_logic_vector (3 DOWNTO 0);
      clk     : IN     std_logic ;
      din128  : IN     std_logic_vector (127 DOWNTO 0);
      we      : IN     std_logic ;
      dout128 : OUT    std_logic_vector (127 DOWNTO 0)
   );
   END COMPONENT;


BEGIN

   -- ModuleWare code(v1.7) for instance 'I1' of 'mux'
   i1combo_proc: PROCESS(addrmux0, addrmux1, addrmux)
   BEGIN
      CASE addrmux IS
      WHEN '0' => addr <= addrmux0;
      WHEN '1' => addr <= addrmux1;
      WHEN OTHERS => addr <= (OTHERS => '0');
      END CASE;
   END PROCESS i1combo_proc;

   -- Instance port mappings.
   I0 : ssram
      PORT MAP (
         addr    => addr,
         clk     => clk,
         din128  => din128,
         we      => we,
         dout128 => dout128
      );

END struct_sync;