Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Fujitsu/S6E2CC/CANFD/RXF1S#0x0
Rx FIFO 1 Status
Rx FIFO 1 Fill Level
Rx FIFO 1 Get Index
Rx FIFO 1 Put Index
Rx FIFO 1 Full
FIFO 1 Message Lost
Debug Message Status
https://github.com/cmsis-svd/cmsis-svd-data