怎样分析下面的程序？

microcreat · 发表于 2009-7-16 14:38:28

div:  process ( CLK_RST,CLK_IN,CLK_CS )
   begin
   if ( CLK_RST = '0' ) then
   CLK_CLK <= '1';
CLK_CNT <= ( others => '0' );
   elsif ( CLK_IN' event and CLK_IN = '1' and CLK_CS = '0' ) then
   if ( CLK_CNT = CLK_NUM ) then
         CLK_CLK <= not CLK_CLK;
         CLK_CNT <= ( others => '0' );
      end if;
      CLK_CNT <= CLK_CNT + 1;
   end if;
   end process div;
和
div:  process ( CLK_RST,CLK_IN,CLK_CS )
   begin
   if ( CLK_RST = '0' ) then
         CLK_CLK <= '1';
CLK_CNT <= ( others => '0' );
   elsif ( CLK_IN' event and CLK_IN = '1' and CLK_CS = '0' ) then
         CLK_CNT <= CLK_CNT + 1;
   if ( CLK_CNT = CLK_NUM ) then
         CLK_CLK <= not CLK_CLK;
         CLK_CNT <= ( others => '0' );
      end if;
   end if;
   end process div;

第一个好像是进行512分频，第个个才进行CLK_NUM 分频！

zkf0100007 · 发表于 2009-7-16 22:37:53

( CLK_IN' event and CLK_IN = '1' and CLK_CS = '0' )
门控时钟，不太好吧！

microcreat · 发表于 2009-7-17 11:27:29

哦！那怎样菜是好点的呢》一般的！谢谢了！

zkf0100007 · 发表于 2009-7-17 23:20:11

if ( CLK_IN' event and CLK_IN = '1' ) then
if( CLK_CS = '0') then
.....

microcreat · 发表于 2009-7-18 17:56:54

好，谢谢了！

怎样分析下面的程序？

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