Subversion Repositories t400

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

--

-- Testbench for the T421 system toplevel.

--

-- $Id: tb_t421.vhd 179 2009-04-01 19:48:38Z arniml $

--

-- Copyright (c) 2006 Arnim Laeuger (arniml@opencores.org)

--

-- All rights reserved

--

-- Redistribution and use in source and synthezised forms, with or without

-- modification, are permitted provided that the following conditions are met:

--

-- Redistributions of source code must retain the above copyright notice,

-- this list of conditions and the following disclaimer.

--

-- Redistributions in synthesized form must reproduce the above copyright

-- notice, this list of conditions and the following disclaimer in the

-- documentation and/or other materials provided with the distribution.

--

-- Neither the name of the author nor the names of other contributors may

-- be used to endorse or promote products derived from this software without

-- specific prior written permission.

--

-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

-- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

-- THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

-- PURPOSE ARE DISCLAIMED. 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.

--

-- Please report bugs to the author, but before you do so, please

-- make sure that this is not a derivative work and that

-- you have the latest version of this file.

--

-- The latest version of this file can be found at:

--      http://www.opencores.org/cvsweb.shtml/t400/

--

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

entity tb_t421 is

end tb_t421;

library ieee;

use ieee.std_logic_1164.all;

use work.t400_system_comp_pack.t421;

use work.tb_pack.tb_elems;

use work.t400_opt_pack.all;

architecture behav of tb_t421 is

  -- 210.4 kHz clock

  constant period_c : time := 4.75 us;

  signal   ck_s     : std_logic;

  signal reset_n_s  : std_logic;

  signal io_l_s     : std_logic_vector(7 downto 0);

  signal io_d_s     : std_logic_vector(3 downto 0);

  signal io_g_s     : std_logic_vector(3 downto 0);

  signal io_in_s    : std_logic_vector(3 downto 0);

  signal si_s,

         so_s,

         sk_s       : std_logic;

  signal vdd_s      : std_logic;

begin

  vdd_s     <= '1';

  reset_n_s <= '1';

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

  -- DUT

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

  t421_b : t421

    generic map (

      opt_ck_div_g => t400_opt_ck_div_4_c,

      opt_cko_g    => t400_opt_cko_gpi_c

    )

    port map (

      ck_i      => ck_s,

      ck_en_i   => vdd_s,

      reset_n_i => reset_n_s,

      cko_i     => io_in_s(2),

      si_i      => si_s,

      so_o      => so_s,

      sk_o      => sk_s,

      io_l_b    => io_l_s,

      io_d_o    => io_d_s,

      io_g_b    => io_g_s

    );

  io_l_s  <= (others => 'H');

  io_d_s  <= (others => 'H');

  io_g_s  <= (others => 'H');

  io_in_s <= (others => 'H');

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

  -- Testbench elements

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

  tb_elems_b : tb_elems

    generic map (

      period_g  => period_c,

      d_width_g => 4,

      g_width_g => 4

    )

    port map (

      io_l_i  => io_l_s,

      io_d_i  => io_d_s,

      io_g_i  => io_g_s,

      io_in_o => io_in_s,

      so_i    => so_s,

      si_o    => si_s,

      sk_i    => sk_s,

      ck_o    => ck_s

    );

end behav;