Seagate ST250LT007 - 9ZV14C ユーザーズマニュアル

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The Identify Device command (command code EC

H

) 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 the table on page 27. 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.

 
 
0

Configuration information: 
• Bit 15: 0 = ATA; 1 = ATAPI 
• Bit 7: removable media 
• Bit 6: removable controller 
• Bit 0: reserved

0C5A

H

1

Number of logical cylinders

16,383

2

ATA-reserved

0000

H

3

Number of logical heads

16

4

Retired

0000

H

5

Retired

0000

H

6

Number of logical sectors per logical track: 63

003F

H

7–9

Retired

0000

H

10–19

Serial number: (20 ASCII characters, 0000

H

 = none)

ASCII

20

Retired

0000

H

21

Retired

0400

H

22

Obsolete

0000

H

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)

ST320LT007 - 9ZV142 
ST320LT009 - 9WC142 
ST320LT014 - 9YK142 
ST250LT007 - 9ZV14C 
ST250LT009 - 9WC14C 
ST250LT014 - 9YK14C 
ST160LT007 - 9ZV14D 
ST160LT009 - 9WC14D 
ST160LT014 - 9YK14D

47

(Bits 7–0) Maximum sectors per interrupt on Read multiple 
and Write multiple (16)

8010

H

48

Reserved

0000

H

49

Standard Standby timer, IORDY supported and may be dis-
abled

2F00

H

50

ATA-reserved

0000

H

51

PIO data-transfer cycle timing mode

0200

H

52

Retired

0200

H

53

Words 54–58, 64–70 and 88 are valid

0007

H

54

Number of current logical cylinders 

H

55

Number of current logical heads 

H

56

Number of current logical sectors per logical track

H

57–58

Current capacity in sectors

H

59

Number of sectors transferred during a Read Multiple or 
Write Multiple command

H