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Altera_Forum's avatar
Altera_Forum
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21 years ago

How to increase DMA fifo depth?

I need to increase the depth of the fifo in an Avalon dma. I thought I remembered reading about it, but I can't seem to find anything that jumps out at me in the .ptf. (dma v3.1, Nios v3.2) ...
Altera_Forum's avatar
Altera_Forum
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21 years ago

Oh ok (that's makes more sense to me now)

Ya I didn't realize that it doesn't have a "full" type status available. Maybe it's something that can be configured in the HAL stuff. So in a nutshell, you're other fifo reaches it's full count, triggers the IRQ, and the NIOS responds by doing a DMA transfer of it's FIFO contents to a RAM.

You DMA fifo length is longer then the other fifo length right?