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LMK04828时钟芯片配置不锁定



时钟芯片输入采用clkin1输入,时钟频率为100MHz,使用0延时配置,为什么时钟芯片两级锁相环只有一级可以锁定,二级却无法锁定,如果不使用零延时模式,一级和二级都可以锁定。

下图为我的0延时配置,麻烦帮我看看哪里有不合适的地方