Interrupt Status Register
| MFS | Management Frame Sent |
| RCOMP | Receive Complete |
| RXUBR | RX Used Bit Read |
| TXUBR | TX Used Bit Read |
| TUR | Transmit Underrun |
| RLEX | Retry Limit Exceeded |
| TFC | Transmit Frame Corruption Due to AHB Error |
| TCOMP | Transmit Complete |
| ROVR | Receive Overrun |
| HRESP | HRESP Not OK |
| PFNZ | Pause Frame with Non-zero Pause Quantum Received |
| PTZ | Pause Time Zero |
| PFTR | Pause Frame Transmitted |
| DRQFR | PTP Delay Request Frame Received |
| SFR | PTP Sync Frame Received |
| DRQFT | PTP Delay Request Frame Transmitted |
| SFT | PTP Sync Frame Transmitted |
| PDRQFR | PDelay Request Frame Received |
| PDRSFR | PDelay Response Frame Received |
| PDRQFT | PDelay Request Frame Transmitted |
| PDRSFT | PDelay Response Frame Transmitted |
| SRI | TSU Seconds Register Increment |
| WOL | Wake On LAN |