I am attempting to use the GUI to program the HMC7044 SCLKout3 to act as a SYSREF. I am trying out the configuration on the evaluation board via the GUI prior to using it on my custom board via FPGA SPI programming.
The following screen clipping is what I used for my test scenario.
My understanding is that SCLKout3 should come up at 1/2280 the frequency of CLKout2. Instead, it comes up at the same frequency as CLKout2.
I have tried varying the divider for SCLKout3 and will sometime see a change in the output and other times will see no change. Is there a robust procedure that I should follow to ensure that changes in the GUI result in changes in the HMC7044 configuration?
Is there anything obviously wrong in my configuration?
Thank you for your help.