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Altera_Forum
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15 years ago

Source of errors in data from SGDMA

Hello, Sorry to be back so quick but I have spent the last two days on this and am at a loss. I have an SGDMA which is reading 16 bit data from an 8bit SDRAM and streaming this to a vide...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Your signaltap image is unreadable.

I don't think that memory read or write errors in the SDRAM controller would create such a regular pattern. When you write to the SDRAM, do you flush the data cache?

Do you have a FIFO between the SGDMA and the video output?