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--  GECKO3COM IP Core

--

--  Copyright (C) 2009 by

--   ___    ___   _   _

--  (  _ \ (  __)( ) ( )

--  | (_) )| (   | |_| |   Bern University of Applied Sciences

--  |  _ < |  _) |  _  |   School of Engineering and

--  | (_) )| |   | | | |   Information Technology

--  (____/ (_)   (_) (_)

--

--  This program is free software: you can redistribute it and/or modify

--  it under the terms of the GNU General Public License as published by

--  the Free Software Foundation, either version 3 of the License, or

--  (at your option) any later version.

--

--  This program is distributed in the hope that it will be useful,

--  but WITHOUT ANY WARRANTY; without even the implied warranty of

--  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

--  GNU General Public License for more details. 

--  You should have received a copy of the GNU General Public License

--  along with this program.  If not, see <http://www.gnu.org/licenses/>.

--

--  URL to the project description: 

--    http://labs.ti.bfh.ch/gecko/wiki/systems/gecko3com/start

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

--

--  Author:  Christoph Zimmermann

--  Date of creation: 17. December 2009

--  Description:

--      This is a wrapper for a FIFO that was generated with the Xilinx Coregenerator

--    to hide the vendor specific stuff and match our naming conventions.

--

--  Target Devices:     Xilinx FPGA's due to use of Coregenerator IP cores

--  Tool versions:      11.1

--  Dependencies:

--

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

library ieee;

use ieee.std_logic_1164.all;

library UNISIM;

use UNISIM.vcomponents.all;

library UNIMACRO;

use UNIMACRO.vcomponents.all;

library work;

use work.GECKO3COM_defines.all;

entity send_fifo is

  generic (

    BUSWIDTH : integer := 16);          -- vector size of the FIFO databusses

  port (

    i_din    : in  std_logic_vector(BUSWIDTH-1 downto 0);

    i_clk    : in  std_logic;

    i_rd_en  : in  std_logic;

    i_rst    : in  std_logic;

    i_wr_en  : in  std_logic;

    o_dout   : out std_logic_vector(SIZE_DBUS_GPIF-1 downto 0);

    o_empty  : out std_logic;

    o_full   : out std_logic);

end send_fifo;

architecture wrapper of send_fifo is

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

  -- COMPONENTS

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

  component coregenerator_fifo_send

    port (

      din    : in  std_logic_vector(BUSWIDTH-1 downto 0);

      rd_clk : in  std_logic;

      rd_en  : in  std_logic;

      rst    : in  std_logic;

      wr_clk : in  std_logic;

      wr_en  : in  std_logic;

      dout   : out std_logic_vector(SIZE_DBUS_GPIF-1 downto 0);

      empty  : out std_logic;

      full   : out std_logic);

  end component;

  -- Synplicity black box declaration

  attribute syn_black_box                               : boolean;

  attribute syn_black_box of coregenerator_fifo_send : component is true;

  attribute box_type of coregenerator_fifo_send      : component is "black_box";

begin

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

  -- Port map

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

  FIFO : coregenerator_fifo_send

    port map (

      din    => i_din,

      rd_clk => i_clk,

      rd_en  => i_rd_en,

      rst    => i_rst,

      wr_clk => i_clk ,

      wr_en  => i_wr_en,

      dout   => o_dout,

      empty  => o_empty,

      full   => o_full

      );

end wrapper;