AnsweredAssumed Answered

ADV7842 Vertical Sync Anomaly

Question asked by danngai on Aug 17, 2015
Latest reply on Sep 20, 2015 by danngai

Hello Video Experts,


I'm using an ADV7842 and encountering an anomaly with Vertical Sync output in operation.   Some initial conditions include:


  • Operating in Autographics Mode
  • Non Standard Video Resolution/Frame Size
  • Register Setup can be emailed [would prefer not to post].


I'm encountering an issue where an Vertical Sync Output has an additional small pulse within the "low" period of the sync pulse [Have scope photos -- again, would prefer not to post].


I've reviewed setup and think that all of the conditions seem correct to produce an uncorrupted VSync pulse, but I think I'm missing something.   I can forward any of the setup information upon contact.  Thank you!