Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
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

You could have a look at the avalon bus side of your sdram controller using Signaltap, but it indeed looks like a timing problem.

Converting your values to hex shows that you have a repeated byte. You write 0x1be7d2cc but read back 0x1b1be7d2