Initial commit

dcm_in50_sim.vhd

@@ -0,0 +1,49 @@
+
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.std_logic_arith.all;
+use ieee.std_logic_unsigned.all;
+
+
+entity dcm_in50 is
+
+  port (
+    CLKIN_IN        : in  std_logic;
+    RST_IN          : in  std_logic;
+    CLKFX_OUT       : out std_logic;
+    CLKIN_IBUFG_OUT : out std_logic;
+    CLK0_OUT        : out std_logic;
+    LOCKED_OUT      : out std_logic);
+
+end dcm_in50;
+
+architecture Behavioral of dcm_in50 is
+
+begin  -- Behavioral
+
+  LOCKED_OUT <= '1';
+  CLKIN_IBUFG_OUT <= CLKIN_IN;
+  
+  process
+  begin
+    wait until CLKIN_IN = '1';
+    while true loop
+      CLK0_OUT <= '1';
+      wait for 20 ns;
+      CLK0_OUT <= '0';
+      wait for 20 ns;
+    end loop;
+  end process;
+
+  process
+  begin
+    wait until CLKIN_IN = '1';
+    while true loop
+      CLKFX_OUT <= '1';
+      wait for 31.25 ns;
+      CLKFX_OUT <= '0';
+      wait for 31.25 ns;
+    end loop;
+  end process;
+
+end Behavioral;