Interrupt Event Register
| TS_TIMER | Timestamp Timer |
| TS_AVAIL | Transmit Timestamp Available |
| WAKEUP | Node Wakeup Request Indication |
| PLR | Payload Receive Error |
| UN | Transmit FIFO Underrun |
| RL | Collision Retry Limit |
| LC | Late Collision |
| EBERR | Ethernet Bus Error |
| MII | MII Interrupt. |
| RXB | Receive Buffer Interrupt |
| RXF | Receive Frame Interrupt |
| TXB | Transmit Buffer Interrupt |
| TXF | Transmit Frame Interrupt |
| GRA | Graceful Stop Complete |
| BABT | Babbling Transmit Error |
| BABR | Babbling Receive Error |