STM32F479AI datasheet(21/208 Pages) STMICROELECTRONICS

部件名	STM32F479AI

功能描述	8- to 14-bit parallel camera interface up to 54 Mbytes

PDF	208 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

21 / 208 page

DocID028010 Rev 2

21/208

STM32F479xx

Functional overview

Figure 6. STM32F479xx Multi-AHB matrix

2.8

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. Configuration is made by software and transfer sizes between

source and destination are independent.

STM32F479AI 数据表(PDF) 21 Page - STMicroelectronics