Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Keil/AT32F413xx_v2/IOMUX/EXINTC4#0x0
External interrupt configuration register 4
Configure EXINT12 source
Configure EXINT13 source
Configure EXINT14 source
Configure EXINT15 source
https://github.com/cmsis-svd/cmsis-svd-data