Interrupt Status register for Master, Slave, and Monitor functions.
| MSTPENDING | Master Pending. |
| MSTARBLOSS | Master Arbitration Loss flag. |
| MSTSTSTPERR | Master Start/Stop Error flag. |
| SLVPENDING | Slave Pending. |
| SLVNOTSTR | Slave Not Stretching status. |
| SLVDESEL | Slave Deselected flag. |
| MONRDY | Monitor Ready. |
| MONOV | Monitor Overflow flag. |
| MONIDLE | Monitor Idle flag. |
| EVENTTIMEOUT | Event time-out Interrupt flag. |
| SCLTIMEOUT | SCL time-out Interrupt flag. |