ST STM32F207 series - Figure 14. Selecting an Alternate Function

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RM0033 Rev 9 143/1381

RM0033 General-purpose I/Os (GPIO)

158

Figure 14. Selecting an alternate function

1. Configured in FS.

ai17538

For pins 0 to 7, the GPIOx_AFRL[31:0] register selects the dedicated alternate function

AF0 (system)

AF1 (TIM1/TIM2)

AF2 (TIM3..5)

AF3 (TIM8..11)

AF4 (I2C1..3)

AF5 (SPI1/SPI2)

AF6 (SPI3)

AF7 (USART1..3)

AF8 (USART4..6)

AF9 (CAN1/CAN2, TIM12..14)

AF10 (OTG_FS, OTG_HS)

AF11 (ETH)

AF12 (FSMC, SDIO, OTG_HS

(1)

)

AF13 (DCMI)

AF14

AF15 (EVENTOUT)

Pin x (x = 0..7)

AFRL[31:0]

For pins 8 to 15, the GPIOx_AFRH[31:0] register selects the dedicated alternate function