Identify Device Command - Seagate Pipeline HD ST2000VM0002 Product Manual

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4.3.1 Identify Device command

The Identify Device command (command code EC
power up. The data is organized as a single 4096-byte block of data, whose contents are shown on page 22. 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.
The following commands contain drive-specific features that may not be included in the Serial ATA specification.
Table 7 Identify Device commands
Word Description
0 Configuration information:
• Bit 15: 0 = ATA; 1 = ATAPI
• Bit 7: removable media
• Bit 6: removable controller
• Bit 0: reserved
1 Number of logical cylinders
2 ATA-reserved
3 Number of logical heads
4 Retired
5 Retired
6 Number of logical sectors per logical track: 63
7–9 Retired
10–19 Serial number: (20 ASCII characters, 0000
20 Retired
21 Retired
22 Obsolete
23–26 Firmware revision (8 ASCII character string,
padded with blanks to end of string)
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)
48 Reserved
49 Standard Standby timer, IORDY supported
and may be disabled
50 ATA-reserved
51 PIO data-transfer cycle timing mode
52 Retired
53 Words 54–58, 64–70 and 88 are valid
54 Number of current logical cylinders
55 Number of current logical heads
56 Number of current logical sectors per logical track
Pipeline HD Product Manual, Rev. A
) transfers information about the drive to the host following
H
= none)
H
Value
0C5A
H
16,383
C837
H
16
0000
H
0000
H
003F
H
0000
H
ASCII
0000
H
0000
H
0000
H
x.xx
8010
H
0000
H
2F00
H
4000
H
0200
H
0200
H
0007
H
xxxx
H
xxxx
H
xxxx
H
25