Serial ATA Interface

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Table 7

Identify Device commands (Continued)

 

 

 

 

 

Word

 

Description

Value

 

 

 

 

52

 

Retired

0200H

 

 

 

 

53

 

Words 54–58, 64–70 and 88 are valid

0007H

 

 

 

 

54

 

Number of current logical cylinders

xxxxH

55

 

Number of current logical heads

xxxxH

 

 

 

 

56

 

Number of current logical sectors per logical track

xxxxH

 

 

 

 

57–58

 

Current capacity in sectors

xxxxH

59

 

Number of sectors transferred during a Read Multiple

xxxxH

 

 

or Write Multiple command

 

 

 

 

 

60–61

 

Total number of user-addressable LBA sectors available

0FFFFFFFh*

 

 

(see Section 2.2 for related information)

 

 

 

*Note: The maximum value allowed in this field is: 0FFFFFFFh

 

 

 

(268,435,455 sectors, 137 Gbytes). Drives with capacities over

 

 

 

137 Gbytes will have 0FFFFFFFh in this field and the actual num-

 

 

 

ber of user-addressable LBAs specified in words 100-103. This is

 

 

 

required for drives that support the 48-bit addressing feature.

 

 

 

 

 

62

 

Retired

0000H

 

 

 

 

63

 

Multiword DMA active and modes supported

xx07H

 

 

(see note following this table)

 

 

 

 

 

64

 

Advanced PIO modes supported (modes 3 and 4 supported)

0003H

65

 

Minimum multiword DMA transfer cycle time per word (120 nsec)

0078H

 

 

 

 

66

 

Recommended multiword DMA transfer cycle time per word

0078H

 

 

(120 nsec)

 

 

 

 

 

67

 

Minimum PIO cycle time without IORDY flow control (240 nsec)

0078H

 

 

 

 

68

 

Minimum PIO cycle time with IORDY flow control (120 nsec)

0078H

69–74

 

ATA-reserved

0000H

 

 

 

 

75

 

Queue depth

001FH

 

 

 

 

76

 

Serial ATA capabilities

xxxxH

77

 

Reserved for future Serial ATA definition

xxxxH

78

 

Serial ATA features supported

xxxxH

 

 

 

 

79

 

Serial ATA features enabled

xxxxH

80

 

Major version number

01F0H

81

 

Minor version number

0028H

 

 

 

 

82

 

Command sets supported

346BH

83

 

Command sets supported

7F01H

 

 

 

 

84

 

Command sets support extension

4163H

 

 

(see note following this table)

 

 

 

 

 

85

 

Command sets enabled

34xxH

 

 

 

 

34

Barracuda Green SATA Product Manual, Rev. D

Page 34
Image 34
Seagate ST2000DL003, ST1500DL003 manual Number of current logical heads, Number of current logical sectors per logical track