Identify Device Command - Seagate Exos 512N Product Manual

6.3.1

Identify Device command

The Identify Device command (command code EC
organized as a single 512-byte block of data, whose contents are shown in
set to zero. Parameters listed with an "x" are drive-specific or vary with the state of the drive.
parameter settings.
The following commands contain drive-specific features that may not be included in the Serial ATA specification.
Table 11 Identify Device command
Word Description
Configuration information:
• Bit 15: 0 = ATA; 1 = ATAPI
0 • Bit 7: removable media
• Bit 6: removable controller
• Bit 0: reserved
1 Obsolete
2 Specific configuration
3-6 Retired
7–8 Reserved
9 Retired
10–19 Serial number: (20 ASCII characters, 0000
20-21 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 Trusted computing feature set options
49 Standard Standby timer, IORDY supported and may be disabled
50 Capabilities
51-52 Obsolete
53 Words 54–58, 64–70 and 88 are valid
54-58 Obsolete
59 Number of sectors transferred during a Read Multiple or Write Multiple command
Total number of user-addressable LBA sectors available
(see Section 2.2
*Note: The maximum value allowed in this field is: 0FFFFFFFh (268,435,455 sectors,
60–61
137GB). Drives with capacities over 137GB will have 0FFFFFFFh in this field and the actual
number of user-addressable LBAs specified in words 100-103. This is required for drives
that support the 48-bit addressing feature.
62 Obsolete
63 Multiword DMA active and modes supported (see note following this table)
64 Advanced PIO modes supported (modes 3 and 4 supported)
65 Minimum multiword DMA transfer cycle time per word (120 ns)
66 Recommended multiword DMA transfer cycle time per word (120 ns)
67 Minimum PIO cycle time without IORDY flow control (240 ns)
68 Minimum PIO cycle time with IORDY flow control (120 ns)
69 Additional supported
70–74 ATA-reserved
Seagate Exos 7E8 SATA Product Manual, Rev. C
) transfers information about the drive to the host following power up. The data is
H
= none)
H
for related information)
Table 10 on page 33. All reserved bits or words should be
See Section 2.0 on page 7
Value
0C5A
0000
C837
0000
0000
0000
ASCII
0000
0000
xxxx
8010
4000
2F00
4000
0200
0007
xxxx
H
xxxx
H
0FFFFFFFh*
0000
xx07
0003
0078
0078
0078
0078
00008
0000
for default
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
35