Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFM32GG11B/EFM32GG11B420F2048GQ64/ACMP3/ROUTEPEN#0x0
I/O Routing Pine Enable Register
ACMP Output Pin Enable
https://github.com/cmsis-svd/cmsis-svd-data