Clock Failure Detector Control
Name:
CFDCTRL
Offset:
0x16
Reset:
0x00
Access:
PAC Write-Protection
Bit76543210
CFDPRESCSWBACKCFDEN
AccessR/WR/WR/W
Reset000

Bit 2 – CFDPRESC: Clock Failure Detector Prescaler

Clock Failure Detector Prescaler

This bit selects the prescaler for the Clock Failure Detector.
ValueDescription
0 The CFD safe clock frequency is the OSCULP32K frequency
1 The CFD safe clock frequency is the OSCULP32K frequency divided by 2

Bit 1 – SWBACK: Clock Switch Back

Clock Switch Back

This bit clontrols the XOSC32K output switch back to the external clock or crystal scillator in case of clock recovery.
ValueDescription
0 The clock switch is disabled.
1 The clock switch is enabled. This bit is reset when the XOSC32K output is switched back to the external clock or crystal oscillator.

Bit 0 – CFDEN: Clock Failure Detector Enable

Clock Failure Detector Enable

This bit selects the Clock Failure Detector state.
ValueDescription
0 The CFD is disabled.
1 The CFD is enabled.