SV35 Series SATA Product Manual, Rev. C 334.3.1 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 7 on page 30. 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 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
0C5AH
1Number of logical cylinders 16,383
2ATA-reserved 0000H
3Number of logical heads 16
4Retired 0000H
5Retired 0000H
6Number of logical sectors per logical track: 63 003FH
7–9 Retired 0000H
10–19 Serial number: (20 ASCII characters, 0000H = none) ASCII
20 Retired 0000H
21 Retired 0400H
22 Obsolete 0000H
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)
ST3500641SV
ST3250824SV
ST3160812SV
47 (Bits 7–0) Maximum sectors per interrupt on Read multiple and Write
multiple (16)
8010H
48 Reserved 0000H
49 Standard Standby timer, IORDY supported and may be disabled 2F00H
50 ATA-reserved 0000H
51 PIO data-transfer cycle timing mode 0200H
52 Retired 0200H