Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFM32GG11B/EFM32GG11B510F2048GQ64/CAN1/MIR1_CMDREQ#0x0
Interface Command Request Register
Message Number
Busy Flag
https://github.com/cmsis-svd/cmsis-svd-data