RCC clock configuration register. More...

#include "MCAL/RCC/RCC_private.h"

Collaboration diagram for t_RCC_CFGR:

Data Fields
t_u32	SW: 2
	System clock switch. More...

t_u32	SWS: 2
	System clock switch status. More...

t_u32	HPRE: 4
	AHB prescaler. More...

t_u32	PPRE1: 3
	APB Low speed prescaler (APB1) More...

t_u32	PPRE2: 3
	APB high-speed prescaler (APB2) More...

t_u32	ADCPRE: 2
	ADC prescaler. More...

t_u32	PLLSRC: 1
	PLL entry/input clock source. More...

t_u32	PLLXTPRE: 1
	LSB of PLL division factor PREDIV1. More...

t_u32	PLLMUL: 4
	PLL multiplication factor. More...

t_u32	USBPRE: 1
	USB prescaler. More...

t_u32	__pad0__: 1
	Reserved bit(s) More...

t_u32	MCO: 3
	Microcontroller clock output. More...

t_u32	__pad1__: 5
	Reserved bit(s) More...

Detailed Description

RCC clock configuration register.

Field Documentation

◆ SW

t_u32 SW

System clock switch.

Select the system clock source

◆ SWS

t_u32 SWS

System clock switch status.

These bits are set and cleared by hardware to inform about which clock source is used as the system clock

Warning: This field is read-only

◆ HPRE

t_u32 HPRE

AHB prescaler.

Configure the AHB clock (HCLK) prescaler

◆ PPRE1

t_u32 PPRE1

APB Low speed prescaler (APB1)

Configure the APB1 clock (PCLK1) prescaler

Warning: Max frequency for APB1 is 36 MHz

◆ PPRE2

t_u32 PPRE2

APB high-speed prescaler (APB2)

Configure the APB2 clock (PCLK2) prescaler

Warning: Max frequency for APB2 is 72 MHz

◆ ADCPRE

t_u32 ADCPRE

ADC prescaler.

Configure the ADC clock (ADCCLK) prescaler

Warning: Max frequency for ADC is 14 MHz

◆ PLLSRC

t_u32 PLLSRC

PLL entry/input clock source.

Select the PLL input clock source

◆ PLLXTPRE

t_u32 PLLXTPRE

LSB of PLL division factor PREDIV1.

Select the LSB of the division factor for PLL input clock

◆ PLLMUL

t_u32 PLLMUL

PLL multiplication factor.

Configure the PLL multiplication factor

◆ USBPRE

t_u32 USBPRE

USB prescaler.

Configure the USB clock (USBCLK) prescaler

◆ pad0

t_u32 __pad0__

Reserved bit(s)

Attention: This field is reserved and must be kept at reset value.

◆ MCO

t_u32 MCO

Microcontroller clock output.

Configure the MCO clock

◆ pad1

t_u32 __pad1__