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