Seagate Barracuda Green Product Manual - Page 30

Description, Value

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Table 7 Identify Device commands (Continued) Word Description Value 50 51 52 53 54 55 56 57-58 59 ATA-reserved PIO data-transfer cycle timing mode Retired Words 54-58, 64-70 and 88 are valid Number of current logical cylinders Number of current logical heads Number of current logical sectors per logical track Current capacity in sectors Number of sectors transferred during a Read Multiple or Write Multiple command 4000H 0200H 0200H 0007H xxxxH xxxxH xxxxH xxxxH xxxxH 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, 137 Gbytes). Drives with capacities over 137 Gbytes 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 63 Multiword DMA active and modes supported (see note following this table) 0000H xx07H 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 68 69-74 75 76 77 78 79 80 81 82 83 Minimum PIO cycle time without IORDY flow control (240 nsec) Minimum PIO cycle time with IORDY flow control (120 nsec) ATA-reserved Queue depth Serial ATA capabilities Reserved for future Serial ATA definition Serial ATA features supported Serial ATA features enabled Major version number Minor version number Command sets supported Command sets supported 0078H 0078H 0000H 001FH xxxxH xxxxH xxxxH xxxxH 01F0H 0028H 346BH 7F01H 30 Barracuda Green SATA Product Manual, Rev. A

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30
Barracuda Green SATA Product Manual, Rev. A
50
ATA-reserved
4000
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
xxxx
H
55
Number of current logical heads
xxxx
H
56
Number of current logical sectors per logical track
xxxx
H
57–58
Current capacity in sectors
xxxx
H
59
Number of sectors transferred during a Read Multiple
or Write Multiple command
xxxx
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, 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.
0FFFFFFFh*
62
Retired
0000
H
63
Multiword DMA active and modes supported
(see note following this table)
xx
07
H
64
Advanced PIO modes supported (modes 3 and 4 supported)
0003
H
65
Minimum multiword DMA transfer cycle time per word (120 nsec)
0078
H
66
Recommended multiword DMA transfer cycle time per word
(120 nsec)
0078
H
67
Minimum PIO cycle time without IORDY flow control (240 nsec)
0078
H
68
Minimum PIO cycle time with IORDY flow control (120 nsec)
0078
H
69–74
ATA-reserved
0000
H
75
Queue depth
001F
H
76
Serial ATA capabilities
xxxx
H
77
Reserved for future Serial ATA definition
xxxx
H
78
Serial ATA features supported
xxxx
H
79
Serial ATA features enabled
xxxx
H
80
Major version number
01F0
H
81
Minor version number
0028
H
82
Command sets supported
346B
H
83
Command sets supported
7F01
H
Table 7
Identify Device commands
(Continued)
Word
Description
Value