ATA COMMAND BLOCK AND SET DESCRIPTION |
Identify Drive — Drive Attribute Data
Table 35: Identify Drive — Drive Attribute Data
Word | Data Default | Bytes | Data Description |
Address | |||
|
|
|
|
0 | 045Ah | 2 | General configuration bit information |
|
|
| • 15: |
|
|
| • 14: Formatting speed latency |
|
|
| permissible gap needed |
|
|
| • 13: Track Offset option supported |
|
|
| • 12: Data Strobe Offset option supported |
|
|
| • 11: Over 0.5% rotational speed |
|
|
| difference |
|
|
| • 10: Disk transfer rate >10Mbps |
|
|
| • 9: 10Mbps >= disk transfer rate >5Mbps |
|
|
| • 8: 5Mbps >= disk transfer rate |
|
|
| • 7: Removable cartridge drive |
|
|
| • 6: Fixed drive |
|
|
| • 5: Spindle Motor Control option |
|
|
| executed |
|
|
| • 4: Over 15μs changing head time |
|
|
| • 3: |
|
|
| • 2: Soft sector allocation |
|
|
| • 1: Hard sector allocation |
|
|
| • 0: Reserved |
|
|
|
|
1 | XXXXh | 2 | Number of cylinders |
|
|
|
|
2 | 0000h | 2 | Reserved |
|
|
|
|
3 | 00XXh | 2 | Number of heads |
|
|
|
|
4 | 0000h | 2 | Number of unformatted bytes per track |
|
|
|
|
5 | XXXXh | 2 | Number of unformatted bytes per sector |
6 | XXXXh | 2 | Number of sectors per track |
|
|
|
|
XXXXh | 4 | Number of sectors per device | |
|
|
|
|
9 | 0000h | 2 | Reserved |
|
|
|
|
XXXXh | 20 | Serial number | |
|
|
|
|
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DOCUMENT: | JUNE 17, 2008 | PAGE 33 |