Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Toshiba/M369/PB/PDN#0x0
PB Pull-Down Control Register
PB0DN
PB1DN
PB2DN
PB3DN
PB4DN
PB5DN
PB6DN
https://github.com/cmsis-svd/cmsis-svd-data