ST STM32L4x6 User Manual

DocID024597 Rev 3 243/1693
RM0351 Reset and clock control (RCC)
253
6.4.28 Peripherals independent clock configuration register (RCC_CCIPR)
Address: 0x88
Reset value: 0x0000 0000
Access: no wait states, word, half-word and byte access
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
DFSDM
SEL
SWP
MI1
SEL
ADCSEL[1:0] CLK48SEL[1:0] SAI2SEL[1:0] SAI1SEL[1:0] LPTIM2SEL[1:0] LPTIM1SEL[1:0 I2C3SEL[1:0]
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
I2C2SEL[1:0] I2C1SEL[1:0]
LPUART1SEL
[1:0]
UART5SEL
[1:0]
UART4SEL
[1:0]
USART3SEL
[1:0]
USART2SEL
[1:0]
USART1SEL
[1:0]
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
Bit 31 DFSDMSEL: DFSDM clock source selection
This bit is set and cleared by software to select the DFSDM clock source.
0: PCLK selected as DFSDM clock
1: System clock (SYSCLK) used as DFSDM clock
Bit 30 SWPMI1SEL: SWPMI1 clock source selection
This bit is set and cleared by software to select the SWPMI1 clock source.
0: PCLK selected as SWPMI1 clock
1: HSI16 clock selected as SWPMI1 clock
Bits 29:28 ADCSEL[1:0]: ADCs clock source selection
These bits are set and cleared by software to select the clock source used by the ADC
interface.
00: No clock selected
01: PLLSAI1 “R” clock (PLLADC1CLK) selected as ADCs clock
10: PLLSAI2 “R” clock (PLLADC2CLK) selected as ADCs clock
11: System clock selected as ADCs clock
Bits 27:26 CLK48SEL[1:0]: 48 MHz clock source selection
These bits are set and cleared by software to select the 48 MHz clock source used by USB
OTG FS, RNG and SDMMC.
00: No clock selected
01: PLLSAI1 “Q” clock (PLL48M2CLK) selected as 48 MHz clock
10: PLL “Q” clock (PLL48M1CLK) selected as 48 MHz clock
11: MSI clock selected as 48 MHz clock
Bits 25:24 SAI2SEL[1:0]: SAI2 clock source selection
These bits are set and cleared by software to select the SAI2 clock source.
00: PLLSAI1 “P” clock (PLLSAI1CLK) selected as SAI2 clock
01: PLLSAI2 “P” clock (PLLSAI2CLK) selected as SAI2 clock
10: PLL “P” clock (PLLSAI3CLK) selected as SAI2 clock
11: External input SAI2_EXTCLK selected as SAI2 clock
Caution: If the selected clock is the external clock, it is not possible to switch to another
clock if the external clock is not present.

ST STM32L4x6 Specifications

General

Brand	ST
Model	STM32L4x6
Category	Microcontrollers
Language	English