diff options
Diffstat (limited to 'testsuite/gna/issue664/reset_synchronizer.vhdl')
| -rw-r--r-- | testsuite/gna/issue664/reset_synchronizer.vhdl | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/testsuite/gna/issue664/reset_synchronizer.vhdl b/testsuite/gna/issue664/reset_synchronizer.vhdl new file mode 100644 index 000000000..1384d5c8f --- /dev/null +++ b/testsuite/gna/issue664/reset_synchronizer.vhdl @@ -0,0 +1,26 @@ +library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+entity reset_synchronizer is
+ port(
+ clk : in std_logic;
+ async_rst_n : in std_logic;
+ rst_n : out std_logic
+ );
+end entity reset_synchronizer;
+
+architecture behavior of reset_synchronizer is
+ signal r_ff1 : std_logic;
+begin
+ SYNCHRONIZE : process(clk, async_rst_n)
+ begin
+ if async_rst_n = '0' then
+ r_ff1 <= '0';
+ rst_n <= '0';
+ elsif rising_edge(clk) then
+ r_ff1 <= '1';
+ rst_n <= r_ff1;
+ end if;
+ end process;
+end architecture;
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