Target Interrupt Flag Register.
| START | START detected. |
| ADDRMATCH | Address matched interrupt. |
| STOP | STOP detected. |
| RX_RDY | Receive data ready. |
| TX_NFULL | Ready for transmit data, |
| DYNADDR_CHG | Dynamic Address Changed interrupt enable. |
| CCC | CCC Reveived Interrupt. |
| ERRWARN | Error or warning interrupt. |
| CCCH_DONE | CCC Handled Interrupt. |
| EVENT_REQ | Event Reqeusted Interrupt. |
| TARG_RST | I3C Target Reset Interrupt. |