Seagate ST9500327AS Momentus 5400 FDE.4 SATA Product Manual - Page 39

Identify Device command, Table 9, Supported commands

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Table 9: Op Code 3A 3B Supported commands ATA Security API DriveTrust Security API Command Locked Unlocked Frozen Secure State Authenticated State WRITE STREAM DMA EXT Aborted Executable Executable Aborted Executable WRITE STREAM EXT Aborted Executable Executable Aborted Executable 4.2.5 Identify Device command The Identify Device command (command code ECH) 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 specification. Word 0 1 2 3 4 5 6 7-9 10-19 20 21 22 23-26 27-46 Description Configuration information: • Bit 15: 0 = ATA; 1 = ATAPI • Bit 7: removable media • Bit 6: removable controller • Bit 0: reserved Number of logical cylinders ATA-reserved Number of logical heads Retired Retired Number of logical sectors per logical track: 63 Retired Serial number: (20 ASCII characters, 0000H = none) Retired Retired Obsolete Firmware revision (8 ASCII character string, padded with blanks to end of string) 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) Value 0C5AH 16,383 0000H 16 0000H 0000H 003FH 0000H ASCII 0000H 0400H 0000H x.xx ST9500327AS ST9320327AS ST9250317AS ST9160317AS ST9120317AS ST980314AS 8001H Momentus 5400 FDE.4 SATA Product Manual, Rev. B 33

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Momentus 5400 FDE.4 SATA Product Manual, Rev. B
33
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.
3A
WRITE STREAM DMA EXT
Aborted
Executable
Executable
Aborted
Executable
3B
WRITE STREAM EXT
Aborted
Executable
Executable
Aborted
Executable
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)
ST9500327AS
ST9320327AS
ST9250317AS
ST9160317AS
ST9120317AS
ST980314AS
47
(Bits 7–0) Maximum sectors per interrupt on Read multiple
and Write multiple (16)
8001
H
Table 9:
Supported commands
ATA Security API
DriveTrust Security API
Op
Code
Command
Locked
Unlocked
Frozen
Secure
State
Authenticated
State