Seagate Barracuda ST3160021AS User Manual
Page 37
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