Read (32)
The Read(32) command uses a 64-bit LBA fields (capable of addressing 8 388 608 PiB) and uses a 32-bit Transfer Length field. 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 (0009h) | |||||||
| 10 | RDPROTECT | DPO | FUA | Reserved | FUA_NV | Reserved | ||
| 11 | Reserved | |||||||
| 12-19 | LBA | |||||||
| 20-23 | 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 Read Commands
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