Peripheral interconnect matrix

AN4646

12/17

DocID027369 Rev 1

The interconnection between USB and TIM2 is described in the SOF trigger section of

RM0368 and RM0383 reference manuals.

2.5.2

From Communication interfaces to DMA

Refer to Section 2.6: DMA block.

2.6

DMA block

Each stream is associated with a DMA request that can be selected out of 8 possible

channel requests. This selection is controlled by the CHSEL [2:0] bits of the DMA_SxCR

register. The 8 requests from the peripherals (TIM, ADC, SPI, I2C, etc.) are independently

connected to each channel and their connection depends on the product implementation.

This interconnection is explained in the following tables of RM0368 and RM0383 reference

manuals:

•

DMA1 request mapping

•

DMA2 request mapping.