Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFR32MG12P/EFR32MG12P432F1024IM48/CRYPTO1/DDATA0BIG#0x0
DDATA0 Register Big Endian Access
Double Data 0 Big Endian Access
https://github.com/cmsis-svd/cmsis-svd-data