channel status register
| SOF0 | Synchronization overrun event flag |
| SOF1 | Synchronization overrun event flag |
| SOF2 | Synchronization overrun event flag |
| SOF3 | Synchronization overrun event flag |
| SOF4 | Synchronization overrun event flag |
| SOF5 | Synchronization overrun event flag |
| SOF6 | Synchronization overrun event flag |
| SOF7 | Synchronization overrun event flag |
| SOF8 | Synchronization overrun event flag |
| SOF9 | Synchronization overrun event flag |
| SOF10 | Synchronization overrun event flag |
| SOF11 | Synchronization overrun event flag |
| SOF12 | Synchronization overrun event flag |
| SOF13 | Synchronization overrun event flag |