Network control register
| LOOPBACKLOCAL | Loopback local |
| ENBRX | Receive enable |
| ENBTX | Transmit enable |
| MANPORTEN | Management port enable |
| CLRALLSTATSREGS | Clear statistics registers |
| INCALLSTATSREGS | Incremental statistics registers |
| STATSWREN | Write enable for statistics registers |
| BACKPRESSURE | Back pressure will force collisions on all received frames |
| TXSTRT | Start transmission |
| TXHALT | Transmit halt |
| TXPFRMREQ | Transmit pause frame |
| TXPFRMZERO | Transmit zero quantum pause frame |
| STORERXTS | Store receive time stamp to memory. |
| PFCENB | Enable PFC Priority Based Pause Reception capabilities. |
| TXPFCPRIORPFRM | Write a one to transmit PFC priority based pause frame. |
| FLUSHRXPKT | Flush the next packet from the external RX DPRAM. |
| TXLPIEN | Enable LPI transmission when set LPI (low power idle) is immediately transmitted. |
| PTPUNICASTEN | Enable detection of unicast PTP unicast frames. |
| STOREUDPOFFSET | Store UDP / TCP offset to memory. |
| ONESTEPSYNCMODE | 1588 One Step Sync Mode. |
| PFCCTRL | Enable multiple PFC pause quantums, one per pause priority |