Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Spansion/MB9AFB4xL/GPIO/PFR0#0x0
Port function setting register 0
Bit0 of PFR0
Bit1 of PFR0
Bit2 of PFR0
Bit3 of PFR0
Bit4 of PFR0
Bit10 of PFR0
Bit11 of PFR0
Bit12 of PFR0
Bit13 of PFR0
Bit14 of PFR0
Bit15 of PFR0
https://github.com/cmsis-svd/cmsis-svd-data