Seagate ST3300631A ユーザーズマニュアル

30

Barracuda 7200.8 PATA Product Manual, Rev. F

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 7
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

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)

ST3400832A
ST3400632A
ST3300831A
ST3300631A
ST3250823A
ST3250623A
ST3200826A

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

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