Seagate ST1500DL003 manual Identify Device command, Word, Value, Command name, Command code in hex

www.seagate.com	Serial ATA Interface
Table 6 Supported ATA commands (Continued)
Command name	Command code (in hex)
Write Sectors Extended	34H
Write Uncorrectable	45H

4.3.1 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 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.

The following commands contain drive-specific features that may not be included in the Serial ATA specification.

Table 7 Identify Device commands

Word	Description	Value
0	Configuration information:	0C5AH
	• Bit 15: 0 = ATA; 1 = ATAPI
	• Bit 7: removable media
	• Bit 6: removable controller
	• Bit 0: reserved
1	Number of logical cylinders	16,383
2	ATA-reserved	0000H
3	Number of logical heads	16
4	Retired	0000H
5	Retired	0000H
6	Number 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	x.xx
	(8 ASCII character string, padded with blanks to end of string)
27–46	Drive model number:	ST2000DL003
	(40 ASCII characters, padded with blanks to end of string)	ST1500DL003
47	(Bits 7–0) Maximum sectors per interrupt on Read multiple and	8010H
	Write multiple (16)
48	Reserved	0000H
49	Standard Standby timer, IORDY supported and may be disabled	2F00H
50	ATA-reserved	4000H
51	PIO data-transfer cycle timing mode	0200H

Barracuda Green SATA Product Manual, Rev. D 33