Interrupt status register
| RGSMIIIS | RGMII Interrupt Status |
| PHYIS | PHY Interrupt |
| PMTIS | PMT Interrupt Status |
| LPIIS | LPI Interrupt Status |
| MMCIS | MMC Interrupt Status |
| MMCRXIS | MMC Receive Interrupt Status |
| MMCTXIS | MMC Transmit Interrupt Status |
| TSIS | Timestamp Interrupt Status |
| TXSTSIS | Transmit Status Interrupt |
| RXSTSIS | Receive Status Interrupt |
| FPEIS | Frame Preemption Interrupt Status |
| MDIOIS | MDIO Interrupt Status |
| MFTIS | MMC FPE Transmit Interrupt Status |
| MFRIS | MMC FPE Receive Interrupt Status |