LMK04821问题:
1、两级锁相环的分频器输出波形占空比不是50%,基本为(n-1):1;
2、PLL1无法锁定;
3、PLL2在特定鉴相频率下能锁定;
4、拉SYNC管脚对齐device clock,不生效;
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LMK04821问题:
1、两级锁相环的分频器输出波形占空比不是50%,基本为(n-1):1;
2、PLL1无法锁定;
3、PLL2在特定鉴相频率下能锁定;
4、拉SYNC管脚对齐device clock,不生效;