STM32F779IGH6 datasheet(23/255 Pages) STMICROELECTRONICS

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STM32F777xx STM32F778Ax STM32F779xx

Functional overview

2.7

DMA controller (DMA)

The devices feature two general-purpose dual-port DMAs (DMA1 and DMA2) with 8

streams each. They are able to manage memory-to-memory, peripheral-to-memory and

memory-to-peripheral transfers. They feature dedicated FIFOs for APB/AHB peripherals,

support burst transfer and are designed to provide the maximum peripheral bandwidth

(AHB/APB).

The two DMA controllers support circular buffer management, so that no specific code is

needed when the controller reaches the end of the buffer. The two DMA controllers also

have a double buffering feature, which automates the use and switching of two memory

buffers without requiring any special code.

Each stream is connected to dedicated hardware DMA requests, with support for software

trigger on each stream. The configuration is made by software and the transfer sizes

between the source and the destination are independent.

The DMA can be used with the main peripherals:

•

SPI and I2S

•

I2C

•

USART

•

General-purpose, basic and advanced-control timers TIMx

•

DAC

•

SDMMC

•

Cryptographic acceleration

•

Camera interface (DCMI)

•

ADC

•

SAI

•

SPDIFRX

•

Quad-SPI

•

HDMI-CEC

•

JPEG codec

•

DFSDM1

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