I have a bunch of questions related to AD9910 multichip synchronization. I'm trying to use two AD9910 in sync, but can't figure out few things:
1) Can I synchronize the two DDS using only the evaluation software?
2) If so, how would the I/O_Update be applied? I don't have any external circuitry for this signal.
3) Referring to CN0121, What's the purpose of SYNC_OUT of master being looped back via ADCLK846 buffer into the SYNC_IN of the master? Instead of using ADCLK846, can I directly loop back SYNC_OUT of Master AD9910 into its own SYNC_IN, as well as in the SYNC_IN of the slave DDS (Would fan out be a problem in that case)?
4) What are the configuration settings of CFR to use two DDS in master and slave mode?
I would appreciate any help