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LMX2595: 请问改变频率时只送分频数寄存器不行吗,必须所有寄存器再送一遍吗。

Part Number: LMX2595

请问改变频率时只送分频数寄存器不行吗,必须所有寄存器再送一遍吗。

按照LMX2595EVM评估板PDF文档第三条(3 Bringing LMX2595 to a Lock State)操作可以将频率锁定在14000MHZ,此时整数分频寄存器R36送的数据0x240046。现在要求输出14200MHZ时,此时寄存器R36送的数据0x240047,点击“Write Register”却不能输出14200MHZ,必须点击菜单中“USB communications-Write All Register”才能输出14200MHZ。如下图所示。请问改变频率时只送分频数寄存器不行吗,必须所有寄存器再送一遍吗。