Gene_SYNC.vhd
70 lines
| 2.1 KiB
| text/x-vhdl
|
VhdlLexer
Alexis
|
r38 | ------------------------------------------------------------------------------ | |
-- This file is a part of the LPP VHDL IP LIBRARY | |||
-- Copyright (C) 2009 - 2010, Laboratory of Plasmas Physic - CNRS | |||
-- | |||
-- 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 3 of the License, or | |||
-- (at your option) any later version. | |||
-- | |||
-- This program 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 General Public License for more details. | |||
-- | |||
-- You should have received a copy of the GNU General Public License | |||
-- along with this program; if not, write to the Free Software | |||
-- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |||
------------------------------------------------------------------------------- | |||
martin
|
r24 | -- Gene_SYNC.vhd | |
library IEEE; | |||
use IEEE.std_logic_1164.all; | |||
use IEEE.numeric_std.all; | |||
entity Gene_SYNC is | |||
port( | |||
SCLK,raz : in std_logic; | |||
enable : in std_logic; | |||
-- Sysclk : in std_logic; | |||
OKAI_send : out std_logic; | |||
SYNC : out std_logic | |||
); | |||
end Gene_SYNC; | |||
architecture ar_Gene_SYNC of Gene_SYNC is | |||
--signal Sysclk_reg : std_logic; | |||
signal count : integer; | |||
begin | |||
process (SCLK,raz) | |||
begin | |||
if(raz='0')then | |||
SYNC <= '0'; | |||
-- Sysclk_reg <= '0'; | |||
count <= 14; | |||
OKAI_send <= '0'; | |||
elsif(SCLK' event and SCLK='1')then | |||
if(enable='1')then | |||
-- Sysclk_reg <= Sysclk; | |||
if(count=15)then | |||
SYNC <= '1'; | |||
count <= count+1; | |||
elsif(count=16)then | |||
count <= 0; | |||
SYNC <= '0'; | |||
OKAI_send <= '1'; | |||
else | |||
count <= count+1; | |||
OKAI_send <= '0'; | |||
end if; | |||
end if; | |||
end if; | |||
end process; | |||
end ar_Gene_SYNC; |