Identify Device Command - Seagate ST500LM000 Product Manual

5.3.1

Identify Device command

The Identify Device command (command code EC
The data is organized as a single 512-byte block of data, whose contents are shown in
should be set to zero. Parameters listed with an "x" are drive-specific or vary with the state of the drive. Refer to
on page 4 for default parameter settings.
Specifications
The following commands contain drive-specific features that may not be included in the Serial ATA specification.
Table 10 Identify Device command
Word Description
Configuration information:
• Bit 15: 0 = ATA; 1 = ATAPI
• Bit 7: removable media
• Bit 6: removable controller
0
• Bit 0: reserved
1 Number of logical cylinders
2 Specific configuration
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:
23–26
(8 ASCII character string, padded with blanks to end of string)
Drive model number:
27–46
(40 ASCII characters, padded with blanks to end of string)
(Bits 7–0)
47
Maximum sectors per interrupt on Read multiple and Write multiple (16)
48 Trusted Computing Feature set options
49 Standard Standby timer, IORDY supported and may be disabled
50 Capabilities
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
59
Read Multiple or Write Multiple command
Total number of user-addressable sectors
This field contains a value that is one greater than the total number of
60–61 user-addressable sectors. The maximum value that shall be placed in this
field is 0FFFFFFFh. The 0FFFFFFFh value applies to all capacities over
137GB (see Section 2.1 for related information).
S L T SSHD SATA P
EAGATE APTOP HIN
) transfers information about the drive to the host following power up.
H
= none)
H
M , R . D
RODUCT ANUAL EV
S ATA (SATA) I
ERIAL
. All reserved bits or words
Table 10
Value
0C5A
H
16,383
C837
H
16
0000
H
0000
H
003F
H
0000
H
ASCII
0000
H
8000
H
0004
H
x.xx
ST500LM000
ST500LM001
ST500LM020
ST320LM002
8010
H
0000
H
2F00
H
4000
H
0200
H
0200
H
0007
H
xxxx
H
xxxx
H
xxxx
H
xxxx
H
xxxx
H
ST500LM000 = 0FFFFFFFh
ST500LM001 = 0FFFFFFFh
ST500LM020 = 0FFFFFFFh
ST320LM002 = 0FFFFFFFh
NTERFACE
Drive
23