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LMX2572PLL不能锁定

Other Parts Discussed in Thread: LMX2572

LMX2572的PLL锁定状态不稳定,寄存器配置为TICS PRO里的默认配置,只更改了channel divider和OSCin的类型,OScin为100M的差分信号,也已经确认OSCin有有效稳定的输入,写入寄存器后,PLL锁定的状态灯亮一会就灭了。这是什么问题呢