uaveiro-leci/1ano/2semestre/lsd/pratica06/CombShiftUnit_Demo/FreqDivider.vhd

34 lines
700 B
VHDL

library IEEE;
use IEEE.STD_LOGIC_1164.all;
use IEEE.NUMERIC_STD.all;
entity FreqDivider is
generic(divFactor : positive := 10);
port
(
clkIn : in std_logic;
clkOut : out std_logic
);
end FreqDivider;
architecture Behavioral of FreqDivider is
subtype TCounter is natural range 0 to divFactor - 1;
signal s_divCounter : TCounter := 0;
begin
assert(divFactor >= 2);
process(clkIn)
begin
if (rising_edge(clkIn)) then
if (s_divCounter >= (divFactor - 1)) then
clkOut <= '0';
s_divCounter <= 0;
else
if (s_divCounter = (divFactor / 2 - 1)) then
clkOut <= '1';
end if;
s_divCounter <= s_divCounter + 1;
end if;
end if;
end process;
end Behavioral;