Seagate ST660712DE ユーザーズマニュアル

28

ST1.3 Series Product Manual, Rev. C

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 28. 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-7 Standard.

 

0

Configuration information:

 

• Bit 15: 0 = ATA; 1 = ATAPI

 

• Bit 7: removable media

 

• Bit 6: removable controller

 

• Bit 0: reserved

848A

H

1

Number of logical cylinders

16,383

2

ATA-reserved

0000

H

3

Number of logical heads

16

4-5

Retired

0000

H

6

Number of logical sectors per logical track

003F

H

7-9

Retired

0000

H

10–19

Serial number: (20 ASCII characters, 0000

H

 = none)

ASCII

20

Retired

0003

H

21

Retired

0100

H

22

Obsolete

0004

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)

ST612712DEG, 

ST612712DE, 

ST610712DEG, 

ST610712DE, 

ST680712DEG, 

ST680712DE, 

ST660712DEG, 

ST660712DE

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 disabled

0B00

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 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