PHY Interrupt Status Register
| PHY_ERRSOTHS_0 | Start of transmission error on data lane 0 (synchronization can still be achieved). |
| PHY_ERRSOTHS_1 | Start of transmission error on data lane 1 (synchronization can still be achieved). |
| PHY_ERRESC_0 | Start of Transmission Error on data lane 0 (no synchronization achieved). |
| PHY_ERRESC_1 | Start of Transmission Error on data lane 1 (no synchronization achieved). |