rsmm.vhd

用TCD1501D驱动器产生CCD驱动的6个输出信号RS、CP、SP、SH以及Φ1、Φ2脉冲

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


entity RSm is
    port( CLK:in std_logic;
          RS:out std_logic
         );
end entity RSm; 

architecture one of RSm is
variable count :  integer range 0 to  10;
BEGIN
 PROCESS(CLK)
　BEGIN
　  IF CLK'EVENT AND CLK='1' THEN
     IF count < 7 THEN
　      count := count  + 1 ;
        RS<='1';
　   ELSE count := 0 ;
	  RS<='0';
　   END IF ;
　  END IF ;
　END PROCESS ;
 end architecture one;