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Altera_Forum
Honored Contributor
Honored ContributorSOPC DMA in burst mode
I tried DMA (using the SOPC DMA) between two 64-bit SOPC memories. This works in 64-bit burst mode, but not when I use 32-bit DMA. I thought the burst adapters would solve this and translate the burs...
Altera_ForumHonored Contributor
Honored Contributor --- Quote Start --- So the DMA controller is setup with a 32-bit width on it's avalon masters but the memories are 64-bit right? Yeah I would assume that the avalon fabric would take care of the width translation. I can't find anything in the documentation that would indicate addressing translation is not performed on burst transfers. Jake --- Quote End --- Yes, that's what I would expect. Actually I was thinking of making a system where I use a DMA block to transfer data from the PCIe block to a memory (in burst mode, seems only possible with 64-bit alignment) and then maybe from this memory to other blocks in 32-bit DMA mode. But then it seems I need another DMA controller that does not work in burst mode ... Thanks.
