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Altera_Forum's avatar
Altera_Forum
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13 years ago

VIP, CVI, BT656 on Seperate Buses

I have an existing (working) design that brings HD-SDI video in and feeds it to a VIP/SOPC chain hitting CVI first. I am using the embedded timing information. This video is two ten-bit buses: Y an...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

So I looked at the Avalon Streaming Interface out of the CVI and it recognizes the SD video at 20 bits just fine. Then I remembered about the 525i/480i video having different numbers of lines in each field and how the reference designs have a Clipper up front to clip this. Up until now I had only put 1080i through so I didn't have this problem. So I ran 625i/576i into the VIP chain and this worked just fine. So I think that's the problem.