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Altera_Forum's avatar
Altera_Forum
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13 years ago

VIP Frame Buffer Locks

Periodically, especially immediately following a Reset to my VIP system, one or the other of the 2 independent frame-buffers hangs up. I have SignalTap on the DoutValid and DoutReady signals througho...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Do you mean VIP control packets?

I insert my control packets between each VIP frame.

This might be your problem.

It might also be possible that your video pipeline is not completely resetting correctly.

You could write a little VIP "watchdog" block on the input or output of the framebuffer that

could assert a system wide reset if doutValid is not asserted for a long time.

You might also want to signal tap the guts of the framebuffer and see if there is anything that

is obviously locking up.