AN3427 datasheet(37/52 Pages) STMICROELECTRONICS

부품명	AN3427

상세설명	Migrating a microcontroller application from STM32F1 to STM32F2 series

PDF	52 Pages

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제조업체	STMICROELECTRONICS [STMicroelectronics]

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37 / 52 page

AN3427

Peripheral migration

Doc ID 019001 Rev 1

37/52

3.12

Miscellaneous

3.12.1

Ethernet PHY interface selection

In STM32 F1 series the Ethernet PHY interface selection is done in the AFIO peripheral

(MII_RMII_SEL bit in AFIO_MAPR register), while in F2 series this configuration is done in

the SYSCFG peripheral (MII_RMII_SEL bit in SYSCFG_PMC register).

3.12.2

TIM2 internal trigger 1 (ITR1) remapping

The example below shows how to select USB OTG FS SOF output or ETH PTP trigger

output as input for TIM2 ITR1 in STM32 F1 series:

In F1 series to select USB OTG FS SOF output as input for TIM2 ITR1, set to 1 the bit

TIM2ITR1_IREMAP in AFIO_MAPR register. Reset this bit to 0 to connect the Ethernet

PTP trigger output to TIM2 ITR1 input.

In F2 series to select USB OTG FS SOF output as input for TIM2 ITR1, set to [10] the

bits ITR1_RMP[1:0] in TIM2_OR register. Set these bits to [01] connect the Ethernet

PTP trigger output to TIM2 ITR1 input.

AN3427 데이터시트(PDF) 37 Page - STMicroelectronics