We are seeing variable latency. The Sysref frequency does meet the < fs/LCM(64, DKS) criteria (one half to be precise) yet an input tone's phase position varies WRT to sysref. There are a few ADC registers that suggest a relationship to latency but so far setting them did not produce the desired effect. The randomness is in the order of hundreds of ps.
Are there recommended ADC register settings for deterministic latency?
(Also we are shutting down sysref after config is complete - as recommended.)
Karoly
