Thank you Austin for the quick replay!
I've been reading though the documentation for the DCM is there a resource that is available which is more applicable to implementing DCM controls into a VHDL code? As a proof of concept I found/modified a VHDL code that acts as a counter. However, to learn how to properly use DCM I want to phase shift a second counter and run each channel at 32MHZ.
Here is the code I started with:
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;
entity counter is
Port ( CLOCK : in STD_LOGIC;
DIRECTION : in STD_LOGIC;
COUNT_OUT : out STD_LOGIC_VECTOR (3 downto 0));
end counter;
architecture Behavioral of counter is
signal count_int : std_logic_vector(3 downto 0) := "0000";
begin
process (CLOCK)
begin
if CLOCK='1' and CLOCK'event then
if DIRECTION='1' then
count_int <= count_int + 1;
else
count_int <= count_int - 1;
end if;
end if;
end process;
COUNT_OUT <= count_int;
end Behavioral;
My modified code:
----------------------------------------------------------------------------------
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;
----------------------------------------------------------------------------------
entity counter is
Port ( clk0 : in STD_LOGIC;
clk90 : in STD_LOGIC;
DIRECTION0 : in STD_LOGIC;
DIRECTION90 : in STD_LOGIC;
COUNT_OUT0 : out STD_LOGIC_VECTOR (3 downto 0);
COUNT_OUT90 : out STD_LOGIC_VECTOR (3 downto 0));
end counter;
----------------------------------------------------------------------------------
architecture Behavioral of counter is
----------------------------------------------------------------------------------
signal count_int0 : std_logic_vector(3 downto 0) := "0000";
signal count_int90 : std_logic_vector(3 downto 0) := "0000";
begin
process (clk0)
begin
if clk0='1' and clk0'event then
if DIRECTION0='1' then
count_int0 <= count_int0 + 1;
else
count_int0 <= count_int0 - 1;
end if;
end if;
end process;
COUNT_OUT0 <= count_int0;
process (clk90)
begin
if clk90='1' and clk90'event then
if DIRECTION90='1' then
count_int90 <= count_int90 + 1;
else
count_int90 <= count_int90 - 1;
end if;
end if;
end process;
COUNT_OUT90 <= count_int90;
end Behavioral;
