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DAC38RF82EVM: PLL frequency invalid in DAC38RF82EVM GUI

Part Number: DAC38RF82EVM

Hi,

My customer has a related question.

Their configuration is as follows.

[Q]

Why is this setting invalid PLL frequency ?

My understanding as follows.

  • High VCO accept this DAC frequency.
  • Internal PLL for DACCLK can generate in this configuration.
  • SerDes PLL can generate the serdes clock. 

Therefore why ... ?

Best Regards,

Hiroshi Katsunaga