lpm_latch1.vhd

CPLD的例子程序1,EPM7128芯片,ISA总线

LIBRARY ieee;
USE ieee.std_logic_1164.all;

LIBRARY lpm;
USE lpm.lpm_components.all;

ENTITY lpm_latch1 IS
	PORT
	(
		data		: IN STD_LOGIC_VECTOR (6 DOWNTO 0);
		gate		: IN STD_LOGIC ;
		aset		: IN STD_LOGIC ;
		q		: OUT STD_LOGIC_VECTOR (6 DOWNTO 0)
	);
END lpm_latch1;


ARCHITECTURE SYN OF lpm_latch1 IS

	SIGNAL sub_wire0	: STD_LOGIC_VECTOR (6 DOWNTO 0);



	COMPONENT lpm_latch
	GENERIC (
		lpm_width		: NATURAL;
		lpm_type		: STRING
	);
	PORT (
			q	: OUT STD_LOGIC_VECTOR (6 DOWNTO 0);
			data	: IN STD_LOGIC_VECTOR (6 DOWNTO 0);
			gate	: IN STD_LOGIC ;
			aset	: IN STD_LOGIC 
	);
	END COMPONENT;

BEGIN
	q    <= sub_wire0(6 DOWNTO 0);

	lpm_latch_component : lpm_latch
	GENERIC MAP (
		lpm_width => 7,
		lpm_type => "LPM_LATCH"
	)
	PORT MAP (
		data => data,
		gate => gate,
		aset => aset,
		q => sub_wire0
	);



END SYN;