HW Feature Register
| MIISEL | 10 or 100 Mbps support |
| GMIISEL | 1000 Mbps support |
| HDSEL | Half-Duplex support |
| EXTHASHEN | Expanded DA Hash Filter |
| HASHSEL | HASH Filter |
| ADDMACADRSEL | Multiple MAC Address Registers |
| PCSSEL | PCS registers (TBI, SGMII, or RTBI PHY interface) |
| L3L4FLTREN | Layer 3 and Layer 4 Filter Feature |
| SMASEL | SMA (MDIO) Interface |
| RWKSEL | PMT Remote Wakeup |
| MGKSEL | PMT Magic Packet |
| MMCSEL | RMON Module |
| TSVER1SEL | Only IEEE 1588-2002 Timestamp |
| TSVER2SEL | IEEE 1588-2008 Advanced Timestamp |
| EEESEL | Energy Efficient Ethernet |
| AVSEL | AV Feature |
| TXCOESEL | Checksum Offload in Tx |
| RXTYP1COE | IP Checksum Offload (Type 1) in Rx |
| RXTYP2COE | IP Checksum Offload (Type 2) in Rx |
| RXFIFOSIZE | Rx FIFO > 2,048 Bytes |
| RXCHCNT | Number of additional Rx channels |
| TXCHCNT | Number of additional Tx channels |
| ENHDESSEL | Alternate (Enhanced Descriptor) |
| INTTSEN | Timestamping with Internal System Time |
| FLEXIPPSEN | Flexible Pulse-Per-Second Output |
| SAVLANINS | Source Address or VLAN Insertion |
| ACTPHYIF | Active or Selected PHY interface |