Infineon DMA User Manual

DMA

Direct Memory Access

AURIX™ TC2xx Microcontroller Training V1.0 2019-03

Please read the Important Notice and Warnings at the end of this document

DMA

Direct Memory Access

Key Features Customer Benefits

Highlights

› The DMA moves data from source

locations to destination locations without the intervention of the CPU or other on chip devices.

› Up to 128 individually programmable

DMA channels

Flexible DMA channels requests

DMA double buffering

› Possible configuration of the request

type (SW, HW, Auto, ..) per DMA channel

› Transfer continuous data stream to two

destination buffers

› Perform multi DMA transactions from

non contiguous Memory regions

DMA Controller

Interrupt Router

DMARAM:

- DMA Channels

Transaction Control Sets

Bus Master Interface

DMA

Request &

Arbitration

DMA Sub-block:

- Active DMA Channel

- DMA Move Engines

Bus Slave Interface

On Chip Bus

DMA linked list

DMA

Flexible DMA channels requests

› The DMA Channel supports the following types of requests:

– DMA Software Request: initiated by CPU

– DMA Hardware Request: Any peripheral that can trigger an interrupt

can initiate a DMA transaction through the Interrupt Router

– DMA Daisy Chain Request: DMA transaction initiated by the next

higher priority DMA channel

– DMA Auto Start Request: initiated by the loading of the next

Transaction Control Set (TCS) during a DMA Linked List operation

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