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Unable to use external sync with AD24000

Question asked by alexfeinman on Oct 30, 2017
Latest reply on Nov 1, 2017 by alexfeinman

My design uses AD24000 with an external sync signal from a video camera. Sync signal comes at 30 Hz. My configuration is:

MSC_CTRL: 0xc9

SYNC_SCAL: 0x0443 = floor(32768/30 -1)


I expect to see DR signal being asserted at a fixed phase offset from the SYNC signal. However, in reality, it randomly drifts relative to the SYNC edge. I would appreciate suggestions.