?? gh_dff.vhd
字號(hào):
-----------------------------------------------------------------------------
-- Filename: gh_Dff.vhd
--
-- Description:
-- a D Flip-Flop
--
-- Copyright (c) 2005 by George Huber
-- an OpenCores.org Project
-- free to use, but see documentation for conditions
--
-- Revision History:
-- Revision Date Author Comment
-- -------- ---------- -------- -----------
-- 1.0 09/03/05 G Huber Initial revision
-- 2.0 10/06/05 G Huber name change to avoid conflict
-- with other libraries
-- 2.1 05/21/06 S A Dodd fix typo's
-----------------------------------------------------------------------------
library IEEE;
use IEEE.STD_LOGIC_1164.all;
entity gh_DFF is
port(
D : in STD_LOGIC;
CLK : in STD_LOGIC;
rst : in STD_LOGIC;
Q : out STD_LOGIC
);
end gh_DFF;
architecture a of gh_DFF is
begin
process(CLK,rst)
begin
if (rst = '1') then
Q <= '0';
elsif (rising_edge(CLK)) then
Q <= D;
end if;
end process;
end a;
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