Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFM32PG1B/EFM32PG1B200F256GM48/CRYPTO/DATA0BYTE12#0x0
DATA0 Register Byte 12 Access
Data 0 Byte 12 Access
https://github.com/cmsis-svd/cmsis-svd-data