Peripheral interconnect matrix

AN4676

12/18

DocID027699 Rev 2

This interconnection is explained in the following sections of RM0385 reference manual:

•

Channel selection

•

Battery charge monitoring

2.4.2

From EXTI to the analog block

EXTI can be used to generate an ADC trigger event or to start a DAC conversion.

The ADC synchronization is described in the conversion on external trigger and trigger

polarity section of RM0385 reference manual.

The selection of input triggers on DAC is provided in the DAC trigger selection section of

RM0385 reference manual.

2.5

Communication interface block

2.5.1

From SPDIFRX to TIM

SPDIFRX (SPDIFRX_FRAME_SYNC) is connected to TIM11_CH1 to measure the clock

drift of received SPDIFRX frames.

This interconnection is explained in the TIM11 option register (TIM11_OR) section of

RM0385 reference manual.

2.5.2

From USB block to TIM

The USB block includes:

•

USB on-the-go full-speed (OTG_FS)

•

USB on-the-go high-speed (OTG_HS)

USB (OTG_FS SOF) and USB (OTG HS SOF) can generate a trigger to a general-purpose

timer (TIM2), as shown in Figure 6.

Figure 6. SOF connectivity