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

--                      

-- Geoffrey Ottoy - DraMCo research group

--

-- Module Name: d_flip_flop.vhd / entity d_flip_flop

-- 

-- Last Modified:       24/11/2011 

-- 

-- Description:         1 bit D flip-flop

--

--

-- Dependencies:        LDCE

--

-- Revision:

--      Revision 1.00 - Architecture

--      Revision 0.01 - File Created

--

--

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

--

-- NOTICE:

--

-- Copyright DraMCo research group. 2011. This code may be contain portions patented

-- by other third parties!

--

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library IEEE;

use IEEE.STD_LOGIC_1164.ALL;

use IEEE.STD_LOGIC_ARITH.ALL;

use IEEE.STD_LOGIC_UNSIGNED.ALL;

---- Uncomment the following library declaration if instantiating

---- any Xilinx primitives in this code.

library UNISIM;

use UNISIM.VComponents.all;

entity d_flip_flop is

   port(core_clk : in  STD_LOGIC;

                          reset : in  STD_LOGIC;

                            din : in  STD_LOGIC;

                      dout : out STD_LOGIC

        );

end d_flip_flop;

architecture Structural of d_flip_flop is

        signal dout_i : std_logic;

begin

        dout <= dout_i;

        FDCE_inst : FDCE

        generic map (

                INIT => '0')     -- Initial value of latch ('0' or '1')  

        port map (

                Q => dout_i,     -- Data output

                CLR => reset,    -- Asynchronous clear/reset input

                D => din,        -- Data input

                C => core_clk,   -- Gate input

                CE => '1'        -- Gate enable input

        );

end Structural;