Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Spansion/MB9BF42xS/CAN0/TESTR#0x0
register TESTR
bitfield BASIC
bitfield SILENT
bitfield LBACK
bitfield TX
bitfield RX
https://github.com/cmsis-svd/cmsis-svd-data