Intel® Agilex™ Hard Processor System Technical Reference Manual

ID 683567
Date 2/14/2023
Public

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16.4.2.5.1. Internal DMA Controller Descriptors

The internal DMA controller uses these types of descriptor structures:
  • Dual‑buffer structure—The distance between two descriptors is determined by the skip length value written to the descriptor skip length field (dsl) of the bus mode register (bmod).
Figure 44. Dual‑Buffer Descriptor Structure
  • Chain structure—Each descriptor points to a unique buffer, and to the next descriptor in a linked list.
Figure 45. Chain Descriptor Structure