WPE=0, OSCE=0, SUP=0, WPS=0, LPOS=0, UM=0, CPS=0, CPE=00, SWR=0, CLKO=0
RTC Control Register
| SWR | Software Reset 0 (0): No effect. 1 (1): Resets all RTC registers except for the SWR bit and the RTC_WAR and RTC_RAR registers . The SWR bit is cleared by POR and by software explicitly clearing it. |
| WPE | Wakeup Pin Enable 0 (0): Wakeup pin is disabled. 1 (1): Wakeup pin is enabled and wakeup pin asserts if the RTC interrupt asserts or the wakeup pin is turned on. |
| SUP | Supervisor Access 0 (0): Non-supervisor mode write accesses are not supported and generate a bus error. 1 (1): Non-supervisor mode write accesses are supported. |
| UM | Update Mode 0 (0): Registers cannot be written when locked. 1 (1): Registers can be written when locked under limited conditions. |
| WPS | Wakeup Pin Select 0 (0): Wakeup pin asserts (active low, open drain) if the RTC interrupt asserts or the wakeup pin is turned on. 1 (1): Wakeup pin instead outputs the RTC 32kHz clock, provided the wakeup pin is turned on and the 32kHz clock is output to other peripherals. |
| CPS | Clock Pin Select 0 (0): The prescaler output clock (as configured by TSIC) is output on RTC_CLKOUT. 1 (1): The RTC 32kHz crystal clock is output on RTC_CLKOUT. |
| LPOS | LPO Select 0 (0): RTC prescaler increments using 32 kHz crystal. 1 (1): RTC prescaler increments using 128 kHz LPO, bits [4:0] of the prescaler are bypassed. |
| OSCE | Oscillator Enable 0 (0): 32.768 kHz oscillator is disabled. 1 (1): 32.768 kHz oscillator is enabled. After setting this bit, wait the oscillator startup time before enabling the time counter to allow the 32.768 kHz clock time to stabilize. |
| CLKO | Clock Output 0 (0): The 32 kHz clock is allowed to output on RTC_CLKOUT. 1 (1): The 32 kHz clock is not allowed to output on RTC_CLKOUT. |
| CPE | Clock Pin Enable 0 (00): RTC_CLKOUT is disabled. 1 (01): RTC_CLKOUT is enabled. |