LIBRARY IEEE;
USE IEEE.STD_LOGIC_1164.ALL;
USE IEEE.STD_LOGIC_UNSIGNED.ALL;
ENTITY CNT32 IS
PORT
(
CLK:IN STD_LOGIC;
SH,RS,ROG:OUT STD_LOGIC; --Signals of CCD;PULSE:to PULSE1 and PULSE2 through a WIRE gat and a NOT gat;
PULSE,PULSE2:BUFFER STD_LOGIC
);
END CNT32;
ARCHITECTURE A OF CNT32 IS
SIGNAL Q: INTEGER RANGE 0 TO 29;
SIGNAL NUM: INTEGER RANGE 0 TO 63899;
BEGIN
PROCESS(CLK)
BEGIN
IF CLK'EVENT AND CLK='1' THEN
CASE Q IS
WHEN 16|17 =>
RS<='1';
SH<='0';
Q<=Q 1;
WHEN 20|21=>
SH<='1';
RS<='0';
Q<=Q 1;
WHEN 29 =>
RS<='1';
SH<='1';
PULSE<=NOT PULSE;
Q<=0;
WHEN OTHERS =>
RS<='1';
SH<='1';
Q<=Q 1;
END CASE;
END IF;
END PROCESS;
PROCESS(CLK)
BEGIN
IF CLK'EVENT AND CLK='0' THEN
IF NUM=63899 THEN NUM<=0;
ELSE
IF (NUM>1)AND(NUM<25) THEN
ROG<='1';
ELSE
ROG<='0';
END IF;
NUM<=NUM 1;
END IF;
END IF;
END PROCESS;
PULSE2<= NOT PULSE;

END A;

上面信号对应相应的管脚名，晶振使用32M的即可。ILX509是SONY的一片线阵CCD，绿光敏感，2K多象素，22DIP（比普通芯片的22DIP要宽）封装。