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ADV7391 Output Ring

Question asked by StevenStowe on Apr 21, 2015
Latest reply on May 1, 2015 by PaulS



On large-magnitude high-frequency transitions on the input bus I'm seeing a ring on the output of the IC which looks like something generated by the digital circuitry (see attached image). The yellow signal in the image is the input to the P7 pin.


I am using the chip in SD mode with the active video edge control enabled; the leading and trailing edges of the active video region have no ring. Is there a similar setting which can be used with SD mode to prevent this kind of ringing within the active image area?