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28 Momentus Thin Product Manual, Rev. C Gen-2
6.3.1 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 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 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 Retired 0000
H
21 Retired 0400
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)
ST320LT007 - 9ZV142
ST320LT009 - 9WC142
ST320LT011 - 9ZVG42
ST320LT014 - 9YK142
ST250LT007 - 9ZV14C
ST250LT009 - 9WC14C
ST250LT011 - 9ZVG4C
ST250LT014 - 9YK14C
ST160LT007 - 9ZV14D
ST160LT009 - 9WC14D
ST160LT011 - 9ZVG4D
ST160LT014 - 9YK14D
47
(Bits 7–0) Maximum sectors per interrupt on Read multiple and
Write multiple (16)
8010
H
48 Reserved 0000
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 Number of current logical cylinders xxxx
H