Write (32)
The CDB structure is:
| bit→ ↓byte |
7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
|---|---|---|---|---|---|---|---|---|
| 0 | Operation code = 7Fh | |||||||
| 1 | Control | |||||||
| 2–5 | Reserved | |||||||
| 6 | Reserved | Group Number | ||||||
| 7 | Additional CDB Length (18h) | |||||||
| 8-9 | Service Action (000Bh) | |||||||
| 10 | WRProtect | DPO | FUA | Reserved | FUA_NV | Reserved | ||
| 12–19 | LBA | |||||||
| 20–23 | Expected Initial Logical Block Reference Tag | |||||||
| 24–25 | Expected Logical Block Application Tag | |||||||
| 26–27 | Logical Block Application Tag Mask | |||||||
| 28–31 | Transfer Length | |||||||
Read more about this topic: SCSI Write Commands
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—Ernest Hemingway (1899–1961)