Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFR32BG1B/EFR32BG1B132F256GM32/EMU/VMONALTAVDDCTRL#0x0
Alternate VMON AVDD Channel Control
Enable
Rise Wakeup
Fall Wakeup
Threshold Fine Adjust
Threshold Coarse Adjust
https://github.com/cmsis-svd/cmsis-svd-data