Seagate ST9320310AS ユーザーズマニュアル

Momentus Product Manual, Rev. D

27

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 (for ST9640320AS, ST9500320AS, ST9320310AS, 
ST9250310AS and ST9160316AS models) or 4096-byte (for ST9640322AS, ST9320312AS and 
ST9400321AS models) 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 specifica-
tion.

 

 

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)

ST9640322AS

 

ST9640320AS

 

ST9500320AS

 

ST9400321AS

 

ST9320312AS

 

ST9320310AS

 

ST9250310AS

 

ST9160316AS

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