Identify Device Command - Seagate Momentus Thin 5400-RPM Product Manual

5.3.1

Identify Device command

The Identify Device command (command code EC
power up. The data is organized as a single 512-byte block of data, whose contents are shown in the table on
page 27. 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 specifica-
tion.
Word Description
Configuration information:
• Bit 15: 0 = ATA; 1 = ATAPI
• Bit 7: removable media
0 • 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
Firmware revision (8 ASCII character string, padded with blanks to
23–26
end of string)
Drive model number: (40 ASCII characters, padded with blanks to
27–46
end of string)
(Bits 7–0) Maximum sectors per interrupt on Read multiple and
47
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
57–58 Current capacity in sectors
Number of sectors transferred during a Read Multiple or Write Mul-
59
tiple command
24
) transfers information about the drive to the host following
H
Value
0C5A
16,383
0000
16
0000
0000
003F
0000
= none) ASCII
H
0000
0400
0000
x.xx
ST320LT020 - 9YG142
ST250LT003 - 9YG14C
ST160LT003 - 9YG141
8010
0000
2F00
0000
0200
0200
0007
xxxx
xxxx
xxxx
xxxx
xxxx
Momentus Thin Product Manual, Rev. E
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H