AHB Single Channel DMA Controller
Once set up, the DMA controller is primarily an AHB Master, which initiates data transfers across the AHB bus to/from a peripheral device through the DMA Buffer. The DMA Buffer is a scalable x32bit FIFO, which is useful for peripheral devices requiring a steady stream of data such as an LCD Controller, Ethernet MAC or other communication device.
The DMA controller contains useful features such incrementing and non-incrementing addressing and link list operation. Linked list support is useful for non-contiguous memory transfer operations.
Multiple DMA controllers can be placed in the AHB System to provide multiple channel DMA control.
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Block Diagram of the AHB Single Channel DMA Controller IP Core
DMA IP
- AXI DMA Back-End Core
- PCIe 5.0 Controller with AMBA AXI interface
- PCIe 2.1 Controller supporting Root Port, Endpoint, Dual-mode Configurations, with Built-in DMA and Configurable AMBA AXI Interconnect
- PCIe 1.1 Controller supporting Root Port, Endpoint, Dual-mode Configurations, with Built-in DMA and Configurable AMBA AXI Interconnect
- AXI4 Memory-Mapped to/from AXI4-Stream DMA
- DMA Back-End Core