AD9106 Offset Phase registers

Question

Hi 
 AD9601 datasheet indicates registers from 0x40 to 0x043 allows phase control for each DDS output available, but when changing values of those registers at configuration procedure, it does not control phases at all. I did a reading from mentioned registers after the configuration and it returns the value I wrote on them but for some reason those registers are not working on the evaluation board. I&acute;m able to configure DDS frequency, I have even tested the cosine option for each of the output and everything is working fine excepts for the phase offset registers. Please help me to understand what is going on. 
 Thanks

ADIApproved · Accepted Answer

Hello rommelya , 
 
 Thank you for your interest in AD9106. The DDS Phase offset has a range of 360&deg; and a resolution of 360&deg;/(216 &minus; 1). Are you using AD9106-ARDZ-EBZ with the released mbed code in this link ? can you share your register settings? 
 You can verify by using sample 3. Here's what it looks like when there is uniform start delay: 
 I used DAC2(blue) and DAC3(Yellow here) 
 
 adjusting the phase offset of DAC3(Yellow) by writing 0x7FFE to register 0x41 we get: 
 Many Thanks, Lorenz)

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AD9106 Offset Phase registers

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