Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Fujitsu/S6E2CC/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
Access Width Control bit
Received error flag clear bit
https://github.com/cmsis-svd/cmsis-svd-data