Interrupt Register (IR). The IR can be written to clear interrupts. The IR can be read to identify which of five possible interrupt sources are pending.
| MR0Int | Interrupt flag for match channel 0. |
| MR1Int | Interrupt flag for match channel 1. |
| MR2Int | Interrupt flag for match channel 2. |
| MR3Int | Interrupt flag for match channel 3. |
| CR0Int | Interrupt flag for capture channel 0 event. |
| RESERVED | Reserved |