sine.vhd

原创：采用VHDL语言编写的正弦信号发生器。rom采用quartus自带的lpm生成

library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_unsigned.all;

entity sine is
port(
	clk:in std_logic;
	dout:out std_logic_vector(7 downto 0)
);
end entity sine;

architecture beh of sine is
component rom1
port(address:in std_logic_vector(5 downto 0);
	 clock:in std_logic;
	 q:out std_logic_vector(7 downto 0)	
);
end component ;
signal q1:std_logic_vector(5 downto 0);
begin
	process(clk)
	begin
		if clk 'event and clk='1' then
		q1<=q1+1;
		end if;
	end process;
u1:rom1 port map(address=>q1,q=>dout,clock=>clk);
end architecture beh;