Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Keil/AT32F413xx_v2/IOMUX/EXINTC3#0x0
External interrupt configuration register 3
Configure EXINT8 source
Configure EXINT9 source
Configure EXINT10 source
Configure EXINT11 source
https://github.com/cmsis-svd/cmsis-svd-data