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Altera_Forum
Honored Contributor
Honored ContributorVIP core questions
I' ve been using the VIP core for some time now, but am still having problems with a few aspect of the design. The project in question mixes two input channels, with clippers and scalers and multiple...
Altera_ForumHonored Contributor
Honored Contributor@johnjunk: Thanks for the heads-up, I'll check it out.
I think I've found the problem, or a major contributing factor... we support multiple output modes and therefore we must dynamically configure the PLL used for video output. Previously I was configuring the PLL *after* the VIP components were brought out of reset, and then starting the CVO module via the control port. If I configure the PLL and *then* reset the entire VIP core (including CVO), and subsequently start CVO, the problem is all-but-eliminated. Still more investigation required... EDIT: is anyone else using dynamically-configured PLLs for VIP/CVO?
