Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFR32MG14P/EFR32MG14P732F256GM32/TRNG0/FIFOLEVEL#0x0
FIFO Level Register
FIFO Level
https://github.com/cmsis-svd/cmsis-svd-data