Questions about the descriptors of the Modular Scatter - Gather DMA Core

Hi Derek,

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@Derek_Teng wrote:

In the Modular Scatter - Gather DMA Core, when I don't enable the Prefetcher Core, can I write multiple descriptors into the dispatcher FIFO through the Descriptor Agent Port at once? Then, by setting the Go bit in the Control Field of the last descriptor to 1 and starting the DMA transt input in sequence.

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You are right.

Yours use case do not required the following prefetcher features, you can don't enable prefetcher.

With Prefetcher enabled, following features are supported:

• Descriptor linked list
• Data transfer to non-contiguous memory space
• Descriptor write back
• Hardware descriptor polling
• 64-bit address spaces