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--This library is free software; you can redistribute it and/or

--modify it under the terms of the GNU Lesser General Public

--License as published by the Free Software Foundation; either

--version 2.1 of the License, or (at your option) any later version.

--This library 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

--Lesser General Public License for more details.

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

--License along with this library; if not, write to the Free Software

--Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

-- e_mail : j.l.nunez-yanez@byacom.co.uk

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

--  ENTITY       = FF_V3_DELAY --

--  version      = 1.0         --

--  last update  = 11/04/00    --

--  author       = Jose Nunez  --

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

--  FUNCTION

--  Introduces an extra level of delay for the decompression counter

--  PIN LIST

--  COUNT_D_IN : in enable count signal

--  CLK : in clock signal               

--  CLEAR : in clear signal

--  COUNT_D_OUT : out enable count signal       

library ieee;

use ieee.std_logic_1164.all;

entity FF_V3_DELAY is

port

        (

        COUNT_D_IN : in bit;

        CLK : in bit;

        CLEAR : in bit;

        RESET : in bit;

        COUNT_D_OUT : out bit

        );

end FF_V3_DELAY;

architecture FF of FF_V3_DELAY is

signal Q1,Q2 : bit;

begin

FLIP_FLOP1 : process(CLK,CLEAR)

begin

        if (CLEAR = '0') then

                Q1 <= '1';

        elsif ((CLK'event) and (CLK='1')) then

                if (RESET = '0') then

                        Q1 <= '1';

                else

                        Q1 <= COUNT_D_IN;

                end if;

        end if;

end process FLIP_FLOP1;

FLIP_FLOP2 : process(CLK,CLEAR)

begin

        if (CLEAR = '0') then

                Q2 <= '1';

        elsif ((CLK'event) and (CLK='1')) then

                if (RESET = '0') then

                        Q2 <= '1';

                else

                        Q2 <= Q1;

                end if;

        end if;

end process FLIP_FLOP2;

COUNT_D_OUT <= Q2;

end FF;