Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

VIP build to build CVI stability

I'm building a VIP system that includes four video pipes that run simultaneously. Each pipe is displayed in a quadrant of the output display but one or more of the images is unstable. Each build prod...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

It's tough to diagnose a tricky problem like this one.

It definitely sounds timing related.

Have you read through this nice timequest tutorial

http://www.alterawiki.com/uploads/3/3f/timequest_user_guide.pdf

?

You might want to go though it and make sure your SDC file

fully constrains all your clock domains and I/O.

Other than that, maybe you can try signal tapping your fifos

for your video quadrants and try and determine if they

are under / overflowing and ferret out the cause of this

if for some strange reason it is not timing related.