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LMX2594: PFD_DLY_SEL寄存器的作用是什么??

Part Number: LMX2594

PFD_DLY_SEL寄存器的作用是什么?手册只写如何设置并没有解释功能。

假设我们设置MASH_ORDER=3,PFD_DLY_SEL为3。

当设置输出频率变化时,根据表2,如果fvco >10000mhz,需要PFD_DLY_SEL =4,

但是我仍保持PFD_DLY_SEL为3,会有什么结果?