reg32b.vhd

来自「基于FPGA的移相式DDS正弦信号发生器的VHDL源代码」· VHDL 代码 · 共 19 行

LIBRARY IEEE;
USE IEEE.STD_LOGIC_1164.ALL;
ENTITY REG32B IS
    PORT (  Load : IN STD_LOGIC;
             DIN : IN STD_LOGIC_VECTOR(31 DOWNTO 0);
            DOUT : OUT STD_LOGIC_VECTOR(31 DOWNTO 0) );
END REG32B;
ARCHITECTURE behav OF REG32B IS
BEGIN
    PROCESS(Load, DIN)
   BEGIN
   IF Load'EVENT AND Load = '1' THEN    -- 时钟到来时，锁存输入数据
            DOUT <= DIN;
        END IF;
    END PROCESS;
END behav;