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Barracuda 7200.7 Serial ATA Product Manual, Rev. N 29
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 number of user-
addressable LBAs specified in words 100-103. This is required for drives
that support the 48-bit addressing feature.
ST3200822AS = 0FFFFFFFh*
ST3160827AS = 0FFFFFFFh*
ST3160023AS = 0FFFFFFFh*
ST3160021AS = 0FFFFFFFh*
ST3120827AS = 234,441,648
ST3120026AS = 234,441,648
ST3120022AS = 234,441,648
ST380817AS = 156,301,488
ST380013AS = 156,301,488
ST380011AS = 156,301,488
ST340111AS = 78,165,360
ST340014AS = 78,165,360
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
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) 00F0
H
68 Minimum PIO cycle time with IORDY flow control (120 nsec) 0078
H
69–
74
ATA-reserved 0000
H
75 Queue depth 0000
H
76–
79
ATA-reserved 0000
H
80 Major version number 003E
H
81 Minor version number 0000
H
82 Command sets supported 306B
H
83 Command sets supported 4001
H
84 Command sets support extension 4000
H
85 Command sets enabled 30xx
H
86 Command sets enabled 0001
H
87 Command sets enable extension 4000
H
88 Ultra DMA support and current mode (see note following this table) xx3F
H
89 Security erase time 0000
H
Word Description Value