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------------------------------------------------------------------------------- -- -- The T8243 asynchronous toplevel -- -- $Id: t8243.vhd,v 1.1 2006-07-13 22:53:56 arniml Exp $ -- $Name: not supported by cvs2svn $ -- -- 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/t48/ -- ------------------------------------------------------------------------------- library ieee; use ieee.std_logic_1164.all; entity t8243 is port ( -- Control Interface ------------------------------------------------------ cs_n_i : in std_logic; prog_n_i : in std_logic; -- Port 2 Interface ------------------------------------------------------- p2_b : inout std_logic_vector(3 downto 0); -- Port 4 Interface ------------------------------------------------------- p4_b : inout std_logic_vector(3 downto 0); -- Port 5 Interface ------------------------------------------------------- p5_b : inout std_logic_vector(3 downto 0); -- Port 6 Interface ------------------------------------------------------- p6_b : inout std_logic_vector(3 downto 0); -- Port 7 Interface ------------------------------------------------------- p7_b : inout std_logic_vector(3 downto 0) ); end t8243; use work.t8243_comp_pack.t8243_async_notri; architecture struct of t8243 is signal p2_s, p4_s, p5_s, p6_s, p7_s : std_logic_vector(3 downto 0); signal p2_en_s, p4_en_s, p5_en_s, p6_en_s, p7_en_s : std_logic; signal vdd_s : std_logic; begin vdd_s <= '1'; ----------------------------------------------------------------------------- -- The asynchronous T8243 ----------------------------------------------------------------------------- t8243_async_notri_b : t8243_async_notri port map ( reset_n_i => vdd_s, -- or generate power-on reset cs_n_i => cs_n_i, prog_n_i => prog_n_i, p2_i => p2_b, p2_o => p2_s, p2_en_o => p2_en_s, p4_i => p4_b, p4_o => p4_s, p4_en_o => p4_en_s, p5_i => p5_b, p5_o => p5_s, p5_en_o => p5_en_s, p6_i => p6_b, p6_o => p6_s, p6_en_o => p6_en_s, p7_i => p7_b, p7_o => p7_s, p7_en_o => p7_en_s ); ----------------------------------------------------------------------------- -- Bidirectional pad structures ----------------------------------------------------------------------------- p2_b <= p2_s when p2_en_s = '1' else (others => 'Z'); p4_b <= p4_s when p4_en_s = '1' else (others => 'Z'); p5_b <= p5_s when p5_en_s = '1' else (others => 'Z'); p6_b <= p6_s when p6_en_s = '1' else (others => 'Z'); p7_b <= p7_s when p7_en_s = '1' else (others => 'Z'); end struct; ------------------------------------------------------------------------------- -- File History: -- -- $Log: not supported by cvs2svn $ -------------------------------------------------------------------------------
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