Subversion Repositories g729a_codec

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

--                                                             --

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

--                                                             --

-- Copyright (C) 2013 Stefano Tonello                          --

--                                                             --

-- This source file may be used and distributed without        --

-- restriction provided that this copyright statement is not   --

-- removed from the file and that any derivative work contains --

-- the original copyright notice and the associated disclaimer.--

--                                                             --

-- THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY         --

-- EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED   --

-- TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS   --

-- FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL THE AUTHOR      --

-- OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,         --

-- INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES    --

-- (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE   --

-- GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR        --

-- BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF  --

-- LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT  --

-- (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT  --

-- OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE         --

-- POSSIBILITY OF SUCH DAMAGE.                                 --

--                                                             --

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

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

-- G.729a ASIP Instruction ROM

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

library ieee;

use ieee.std_logic_1164.all;

use ieee.numeric_std.all;

use std.textio.all;

library WORK;

use WORK.G729A_ASIP_ROMI_PKG.all;

entity G729A_ASIP_ROMI is

  generic(

    WCOUNT : natural := 256;

    DATA_WIDTH : natural := 8;

    ADDR_WIDTH : natural := 8

  );

  port(

    CLK_i : in std_logic;

    A_i : in unsigned(ADDR_WIDTH-1 downto 0);

    Q_o : out std_logic_vector(DATA_WIDTH-1 downto 0)

  );

end G729A_ASIP_ROMI;

architecture ARC of G729A_ASIP_ROMI is

  constant ROM_MEM : ROMI_DATA_T := ROMI_INIT_DATA;

begin

  process(CLK_i)

  begin

    if(CLK_i = '1' and CLK_i'event) then

      Q_o <= ROM_MEM(to_integer(A_i));

    end if;

  end process;

end ARC;

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

-- G.729a Constant data Instruction ROM

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

library ieee;

use ieee.std_logic_1164.all;

use ieee.numeric_std.all;

use std.textio.all;

library WORK;

use WORK.G729A_ASIP_ROMD_PKG.all;

entity G729A_ASIP_ROMD is

  generic(

    WCOUNT : natural := 256;

    DATA_WIDTH : natural := 8;

    ADDR_WIDTH : natural := 8

  );

  port(

    CLK_i : in std_logic;

    A0_i : in unsigned(ADDR_WIDTH-1 downto 0);

    A1_i : in unsigned(ADDR_WIDTH-1 downto 0);

    Q0_o : out std_logic_vector(DATA_WIDTH-1 downto 0);

    Q1_o : out std_logic_vector(DATA_WIDTH-1 downto 0)

  );

end G729A_ASIP_ROMD;

architecture ARC of G729A_ASIP_ROMD is

  constant ROM_MEM : ROMD_DATA_T := ROMD_INIT_DATA;

begin

  process(CLK_i)

  begin

    if(CLK_i = '1' and CLK_i'event) then

      Q0_o <= ROM_MEM(to_integer(A0_i));

      Q1_o <= ROM_MEM(to_integer(A1_i));

    end if;

  end process;

end ARC;