Seagate ST2000VN0001 ユーザーズマニュアル

SATA Interface

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  on page 19. 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 SATA 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)

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

59

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

H

60–61

Total number of user-addressable LBA sectors available
(see Section 2.2 for related information)
*Note: The maximum value allowed in this field is: 0FFFFFFFh 
(268,435,455 sectors, 137GB). Drives with capacities over 137GB will 
have 0FFFFFFFh in this field and the actual number of user-
addressable LBAs specified in words 100-103. This is required for 
drives that support the 48-bit addressing feature.

0FFFFFFFh*

62

Retired

0000

H

63

Multiword DMA active and modes supported
(see note following this table)

xx07

H

64

Advanced PIO modes supported (modes 3 and 4 supported)

0003

H