truncation.vhd

In communication systems channel poses an important role. channels can convolve many different kind

--  Copyright (C) 2004-2005 Digish Pandya <[e-mail]>

--  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 2 of the License, or
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--  This program is distributed in the hope that it will be useful,
--  but WITHOUT ANY WARRANTY; without even the implied warranty of
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--  GNU General Public License for more details.
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-- simple 16 to 8 bit truncation circuit
-- it is only for fixed point(6,8) system
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;


entity truncation is
    Port ( d_in : in std_logic_vector(15 downto 0);
           d_out : out std_logic_vector(7 downto 0));
end truncation;

architecture Behavioral of truncation is

begin

	d_out <= d_in(13 downto 6);
end Behavioral;