Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Toshiba/M367/PB/FR4#0x0
PB Function Register 4
PB2F4
PB3F4
PB4F4
PB5F4
PB6F4
https://github.com/cmsis-svd/cmsis-svd-data