Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Fujitsu/MB9BF52xT/GPIO/PFRB#0x0
Port function setting register B
Bit0 of PFRB
Bit1 of PFRB
Bit2 of PFRB
Bit3 of PFRB
Bit4 of PFRB
Bit5 of PFRB
Bit6 of PFRB
Bit7 of PFRB
https://github.com/cmsis-svd/cmsis-svd-data