Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFR32BG12P/EFR32BG12P232F512IM68/TRNG0/FIFO#0x0
FIFO Data
FIFO Read Data
https://github.com/cmsis-svd/cmsis-svd-data