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Altera_Forum's avatar
Altera_Forum
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15 years ago

SGDMA debug

Hello, I am trying to learn how to use SGDMA to transfer data to memory. First of all, I am trying to connect SGDMA TX directly to SGDMA RX and check results. You can find the source code ->here<-...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

To get decent performance from the SGDMA you need to have to either have a lot of descriptors chained together or have each descriptor perform a lot of accesses. Unfortunately the SGDMA is limited to 64kB sized transfers so that kinda leaves you with the requirement to chain a bunch of descriptors together.