ST STM32L4+ Series Reference Manual page 282

Reset and clock control (RCC)
Bit 27:26 Reserved, must be kept at reset value.
Bit 25 CAN1RST: CAN1 reset
Bit 24 CRSRST: CRS reset
Bit 23 I2C3RST: I2C3 reset
Bit 22 I2C2RST: I2C2 reset
Bit 21 I2C1RST: I2C1 reset
Bit 20 UART5RST: UART5 reset
Bit 19 UART4RST: UART4 reset
Bit 18 USART3RST: USART3 reset
Bit 17 USART2RST: USART2 reset
Bit 16 Reserved, must be kept at reset value.
Bit 15 SPI3RST: SPI3 reset
Bit 14 SPI2RST: SPI2 reset
282/2301
Set and reset by software.
0: No effect
1: Reset the CAN1
Set and cleared by software.
0: No effect
1: Reset the CRS
Set and reset by software.
0: No effect
1: Reset I2C3
Set and cleared by software.
0: No effect
1: Reset I2C2
Set and cleared by software.
0: No effect
1: Reset I2C1
Set and cleared by software.
0: No effect
1: Reset UART5
Set and cleared by software.
0: No effect
1: Reset UART4
Set and cleared by software.
0: No effect
1: Reset USART3
Set and cleared by software.
0: No effect
1: Reset USART2
Set and cleared by software.
0: No effect
1: Reset SPI3
Set and cleared by software.
0: No effect
1: Reset SPI2
RM0432 Rev 6
RM0432