Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Fujitsu/MB9BF30xN/MFS0/CSIO_SSR#0x0
Serial Status Register
Transmit bus idle flag bit
Transmit data empty flag bit
Received data full flag bit
Overrun error flag bit
Received error flag clear bit
https://github.com/cmsis-svd/cmsis-svd-data