Forum Discussion
Altera_Forum
Honored Contributor
16 years agoMy input is 1280x720 (1650x750 with blanking), I tried CVI and CVO FIFOs of the size from 1280 to 4096 - did not help.
The CVO threshold has been attempted at 500, 1000 and 4095 - did not help. Tried using dual clocks (74.25MHz at the CVI input and CVO output and 74.25*5/3 internaly for SOPC processing) - did not help. Yes, the simpler system using just a PG and CVO did work. It appears the system works as long as the VIP Pattern Generator is a) used as a source of video stream, and b) stays within the last SOPC block in the chain. If the PG is removed to a separate SOPC block (PG + CVO), followed by (CVI + whatever + CVO) block, then this immediately stops working properly with the symptoms descibed in the oroginal post as "Busted". Thanks for your suggestions - look forward to additional feedback.