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Altera_Forum
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21 years ago

Streaming DMA transfer from UL

Dear collegue engineers, I have been working with the NIOS II kit for a few weeks now and I have pretty much all of my interface/peripheral chips linked together. The only thing that I am still strug...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

Arjan,

Streaming can certainly be tricky. Given your brief description, I wonder if your dataavailable_n signal could be misbehaving. I believe if a streaming signal changes midway through a transaction, the arbitration logic might become confused. Can you make sure your dataavailable_n goes to inactive level only on the cycle after data is delivered, or when the slave interface is idle?