Identify Device Command - Seagate MOMENTUS ST9120315AS Product Manual

4.3.1

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
0 • 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 dis-
abled
50 ATA-reserved
51 PIO data-transfer cycle timing mode
52 Retired
53 Words 54–58, 64–70 and 88 are valid
Momentus 5400.6 SATA Product Manual, Rev. E
) transfers information about the drive to the host following
H
Value
0C5A
16,383
0000
H
16
0000
H
0000
H
003F
H
0000
H
= none) ASCII
H
0000
H
0400
H
0000
H
x.xx
ST9500325AS
ST9500325ASG
ST9400326AS
ST9320325AS
ST9320325ASG
ST9250315AS
ST9250315ASG
ST9160301AS
ST9160314AS
ST9160314ASG
ST9120315AS
ST9120315ASG
ST980313AS
ST980313ASG
8010
H
0000
H
2F00
H
0000
H
0200
H
0200
H
0007
H
H
29