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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