Seagate BARRACUDA PRO ST2000DM012, Product Manual

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Seagate BarraCuda Pro SATA Product Manual, Rev. A 32
4.3.1 Identify Device command
The Identify Device command (command code EC
H
) transfers information about the drive to the host following power up. The data is
organized as a single 512-byte block of data, whose contents are shown in Table 10 on page 30. All reserved bits or words should be
set to zero. Parameters listed with an “x” are drive-specific or vary with the state of the drive. See Section 2.0 on page 7 for default
parameter settings.
The following commands contain drive-specific features that may not be included in the Serial ATA specification.
Word Description Value
0
Configuration information:
• Bit 15: 0 = ATA; 1 = ATAPI
• Bit 7: removable media
• Bit 6: removable controller
• Bit 0: reserved
0C5A
H
1 Number of logical cylinders 16,383
2 ATA-reserved 0000
H
3 Number of logical heads 16
4 Retired 0000
H
5 Retired 0000
H
6 Number of logical sectors per logical track: 63 003F
H
7–9 Retired 0000
H
10–19 Serial number: (20 ASCII characters, 0000
H
= none) ASCII
20-21 Retired 0000
H
22 Obsolete 0000
H
23–26 Firmware revision (8 ASCII character string, padded with blanks to end of string) x.xx
27–46 Drive model number: (40 ASCII characters, padded with blanks to end of string)
47 (Bits 7–0) Maximum sectors per interrupt on Read multiple and Write multiple (16) 8010
H
48 Trusted computing feature set options 4000
H
49 Standard Standby timer, IORDY supported and may be disabled 2F00
H
50 ATA-reserved 0000
H
51 PIO data-transfer cycle timing mode 0200
H
52 Retired 0200
H
53 Words 54–58, 64–70 and 88 are valid 0007
H
54-58 Obsolete xxxx
H
59 Number of sectors transferred during a Read Multiple or Write Multiple command xxxx
H
60–61
Total number of user-addressable LBA sectors available
(see Section 2.2 for related information)
*Note: The maximum value allowed in this field is: 0FFFFFFFh (268,435,455 sectors,
137GB). Drives with capacities over 137GB will have 0FFFFFFFh in this field and the actual
number of user-addressable LBAs specified in words 100-103. This is required for drives
that support the 48-bit addressing feature.
0FFFFFFFh*
62 Retired 0000
H
63 Multiword DMA active and modes supported (see note following this table) x4 07
H
64 Advanced PIO modes supported (modes 3 and 4 supported) 0003
H
65 Minimum multiword DMA transfer cycle time per word (120 ns) 0078
H
66 Recommended multiword DMA transfer cycle time per word (120 ns) 0078
H
67 Minimum PIO cycle time without IORDY flow control (120 ns) 0078
H