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

-- This file is part of SCARTS.

-- 

-- SCARTS 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.

-- 

-- SCARTS 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 SCARTS.  If not, see <http://www.gnu.org/licenses/>.

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

library ieee;

use ieee.std_logic_1164.all;

architecture beh of sync is

  signal sync : std_logic_vector(1 to SYNC_STAGES);

begin

  process(sys_clk, sys_res_n)

  begin

    if sys_res_n = '0' then

      sync <= (others => RESET_VALUE);

    elsif rising_edge(sys_clk) then

      sync(1) <= data_in;

      for i in 2 to SYNC_STAGES loop

        sync(i) <= sync(i - 1);

      end loop;

    end if;

  end process;

  data_out <= sync(SYNC_STAGES);

end architecture beh;