Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Spansion/MB9BF36xx/MFS0/UART_ESCR#0x0
register UART_ESCR
bitfield L
bitfield P
bitfield PEN
bitfield INV
bitfield ESBL
bitfield FLWEN
https://github.com/cmsis-svd/cmsis-svd-data