Seagate ST3250823SCE Manual Do Utilizador

DB35 Serial ATA Product Manual, Rev. E

25

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 Table 6 on
page 23. 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 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)

ST3400832SCE

 

ST3300831SCE

 

ST3250823SCE

 

ST3200826SCE

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