Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Spansion/MB9BF36xx/MFS0/UART_SSR#0x0
register UART_SSR
bitfield TBI
bitfield TDRE
bitfield RDRF
bitfield ORE
bitfield FRE
bitfield PE
bitfield REC
https://github.com/cmsis-svd/cmsis-svd-data