10.5.4 Main Clock Status

Name: MCLKSTATUS
Offset: 0x03
Reset: 0x00
Property: -

Bit 76543210 
 EXTSXOSC32KSOSC32KSOSC20MS   SOSC 
Access RRRRR 
Reset 00000 

Bit 7 – EXTS External Clock Status

ValueDescription
0EXTCLK has not started
1EXTCLK has started

Bit 6 – XOSC32KS XOSC32K Status

The Status bit will only be available if the source is requested as the main clock or by another module. If the oscillator RUNSTDBY bit is set, but the oscillator is unused/not requested, this bit will be ‘0’.
ValueDescription
0XOSC32K is not stable
1XOSC32K is stable

Bit 5 – OSC32KS OSCULP32K Status

The Status bit will only be available if the source is requested as the main clock or by another module. If the oscillator RUNSTDBY bit is set, but the oscillator is unused/not requested, this bit will be ‘0’.
ValueDescription
0OSCULP32K is not stable
1OSCULP32K is stable

Bit 4 – OSC20MS OSC20M Status

The Status bit will only be available if the source is requested as the main clock or by another module. If the oscillator RUNSTDBY bit is set, but the oscillator is unused/not requested, this bit will be ‘0’.
ValueDescription
0OSC20M is not stable
1OSC20M is stable

Bit 0 – SOSC Main Clock Oscillator Changing

ValueDescription
0The clock source for CLK_MAIN is not undergoing a switch
1The clock source for CLK_MAIN is undergoing a switch and will change as soon as the new source is stable