Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Microchip Technology/ATSAME51J19A/SERCOM0/I2CS/INTFLAG#0x0
I2CS Interrupt Flag Status and Clear
Stop Received Interrupt
Address Match Interrupt
Data Interrupt
Combined Error Interrupt
https://github.com/cmsis-svd/cmsis-svd-data