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DAC39RF10EVM: Issue with Modifying LMX1204 Settings on DAC39RF10EVM Evaluation Board

Part Number: DAC39RF10EVM
Other Parts Discussed in Thread: LMX1204, DAC39RF10

Tool/software:

Hello,

I am looking to control the LMX1204 component on the DAC39RF10EVM evaluation board in order to configure it as follows:

  • LMX CLKp: 1.28 GHz (SMA100B)
  • Multiplier mode x4
  • CLKout3 enable to observe a 5.12 GHz output signal on the J9 (CLK3p) connector.

However, when I attempt to modify the associated registers (Register 25, address 0x19, bits 5:3 and 2:0) in the DAC39RF10 GUI software, it does not work. Register 25 is not editable and remains at a value of 0x0103, unlike the other registers, which I can write and modify.

Thank you in advance for your response.

Best regards,
Lucas Genet.
Thales LAS FRANCE SAS - Ymare