| Bit | Default Value | Access Type | Description |
|---|---|---|---|
| Channel 1 | |||
| 2:0 | 0 | RO | Reserved |
| 4:3 | 0 | RW | TXBUFSTATUS[1:0] |
| Channel 2 | |||
| 10:5 | 0 | RO | Reserved |
| 12:11 | 0 | RW | TXBUFSTATUS[1:0] |
| Channel 3 | |||
| 18:13 | 0 | RO | Reserved |
| 20:19 | 0 | RW | TXBUFSTATUS[1:0] |
| Channel 4 | |||
| 28:27 | 0 | RW | TXBUFSTATUS[1:0] |
| 31:29 | 0 | RO | Reserved |