Seagate ST930218A, ST980829A, ST960812A, ST950814A Identify Device command, Word Description Value

Table 7:	Supported commands
Command name		Command code (in hex)
Security Freeze Lock		F5H
Security Disable Password		F6H

4.1.2Identify 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 Table 7 on page 24. 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 Draft ATA-6 Standard.

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: (40 ASCII characters, padded with	ST9120824A
	blanks to end of string)	ST9100825A
		ST980829A
		ST960812A
		ST950814A
		ST9402112A
		ST930218A
47	(Bits 7–0) Maximum sectors per interrupt on Read multiple	8010H
	and Write multiple (16)
48	Reserved	0000H
49	Standard Standby timer, IORDY supported and may be	2F00H
	disabled
50	ATA-reserved	0000H

26 Momentus 4200.2 Product Manual, Rev. C