Seagate Momentus 7200 FDE.1 SATA, Product Manual

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36 Momentus 7200 FDE.1 SATA Product Manual, Rev. A
4.2.5 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
below. 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) ST9320424AS
ST9250424AS
ST9160414AS
ST9120414AS
ST9320424ASG
ST9250424ASG
ST9160414ASG
ST9120414ASG
ST980414ASG
47 (Bits 7–0) Maximum sectors per interrupt on Read multiple
and Write multiple (16) 8001
H
48 Reserved 0000
H
49 Standard Standby timer, IORDY supported and may be dis-
abled 2F00
H
50 ATA-reserved 0000
H
51 PIO data-transfer cycle timing mode 0200
H
52 Retired 0200
H