SEAGATE 600 SSD PRODUCT MANUAL, REV. A 24 4.3.1 Identify Device commandThe 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 Table 8 on page 22. 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. see Section 2.0 on page 3 for default parameter settings.The following commands contain drive-specific features that may not be included in the Serial ATA specification.
WORD DESCRIPTION VALUE
0 General configuration 0040H
1 Number of logical cylinders (obsolete) 16,383 3FFFH
2 Specific configuration C837H
3 Number of logical heads (obsolete) 16 0010H
4-5 Retired 0000H
6 Number of logical sectors per logical track (obsolete) 63 003FH
7–8 Reserved for CompactFlash Association 0000H
9 Retired 0000H
10–19 Serial number: (ATA ASCII string padded with spaces (20H)) ASCII
20-21 Retired 0000H
22 Obsolete 0000H
23–26 Firmware revision (ATA ASCII string padded with spaces (20h)) ASCII
27–46 Model number (ATA ASCII string padded with spaces (20h)) ASCII
47 (Bits 7-0) Maximum number of logical sectors that shall be transferred per DRQ data
block on READ/WRITE MULTIPLE commands. 16 8010H
48 Reserved for Trusted Computing feature set options 4000H
49 Capabilities – Standby Timer, IORDY Support, etc 2F00H
50 Capabilities Continued 4000H
51 PIO data transfer cycle timing option (Obsolete) 0000H
52 Retired 0000H
53 Words 54–58, 64–70 and 88 are valid 0006H
54 Number of current logical cylinders (Obsolete) 3FFFH
55 Number of current logical heads (Obsolete) 0010H
56 Number of current logical sectors per logical track (Obsolete) 003FH
57–58 Current capacity in sectors (Obsolete) FC10H 00FBH
59 Number of LBAs transferred per Read Multiple or Write Multiple. Sanitize Command
Support 9110H
60–61 Total number of user addressable logical sectors for 28-bit commands Note: The maxi-
mum value allowed in this field is: 0FFFFFFFh. If this field contains 0FFFFFFFh and the
device has user addressable LBAs greater than or 137GB, then words 100..103 contain
the total number of user addressable LBAs
XXXXXXXXH
62 Obsolete 0000H
63 Multiword DMA active and modes supported
(see note following this table) 0007H
64 Advanced PIO modes supported. SATA = 0003h 0003H
65 Minimum Multiword DMA transfer cycle time per word (120ns) 0078H
66 Recommended Multiword DMA transfer cycle time (120ns) 0078H