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ADV7441A periodically fails to detect HDMI signal...

Question asked by dmcpherson on Nov 6, 2012
Latest reply on Nov 8, 2012 by mattp

I'm working on a device that captures video/audio and utilizes the ADV7441A for decoding the incoming signals.  We have observed that the ADV7441A reports loss of signal periodically when connected to some HDMI cameras.  After losing the signal for a short time (30 to 60 seconds) the signal is detected again and remains good for a period of time, then is lost again.  This repeats forever.  AFAIK the camera is continuously driving the HDMI signals (it is set to playback a recorded video).  The signal from the camera is 1920x1080i @30fps.  Has anyone experienced anything similar?  Are there ADV7441A registers that I should check to ensure the are programmed with values to ensure the widest range of signals (from quality perspective) can be detected and locked onto?  thanks, davis mcpherson