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AD9546 1Hz Output Duty Cycle Configuration

Category: Hardware
Product Number: AD9546


I have a system which contains AD9546 EVB.

I configured inputs and outputs and everything works fine. I am using an OCXO (10MHz) for reference.

But I want to change duty cycle for the all 1Hz outputs.

When I checked the datasheet, according to page 105, I understand that first I should get the "Q divider" value and make a calculation to get "Modulation Step". Then, I should write that values to the related registers.

However, when I read the value from registers of "Q Divider" using evaluation software, it returns hex "00". So I could not make the calculation.

Even If I tried to write random values to the register of both Q Divider and Modulation Step, nothing changed.

Is there any way to do that?