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Word
Description
93
Hardware reset value
(see description following this table)
94
Auto acoustic management setting
95–99
ATA-reserved
100–
Total number of user-addressable LBA sectors available
103
(see Section 2.2 for related information)
These words are required for drives that support the 48-bit
addressing feature. Maximum value: 0000FFFFFFFFFFFFh.
104–
ATA-reserved
127
128
Security status
129–
Seagate-reserved
159
160–
ATA-reserved
254
255
Integrity word
Note.
See the bit descriptions below for words 63, 88, 93 and 94 of the Identify Drive data:
Description (if bit is set to 1)
Bit
Word 63
0
Multiword DMA mode 0 is supported.
1
Multiword DMA mode 1 is supported.
2
Multiword DMA mode 2 is supported.
8
Multiword DMA mode 0 is currently active.
9
Multiword DMA mode 1 is currently active.
10
Multiword DMA mode 2 is currently active.
Bit
Word 88
0
Ultra DMA mode 0 is supported.
1
Ultra DMA mode 1 is supported.
2
Ultra DMA mode 2 is supported.
3
Ultra DMA mode 3 is supported.
4
Ultra DMA mode 4 is supported.
8
Ultra DMA mode 0 is currently active.
9
Ultra DMA mode 1 is currently active.
10
Ultra DMA mode 2 is currently active.
11
Ultra DMA mode 3 is currently active.
12
Ultra DMA mode 4 is currently active.
28
Value
xxxx
H
xxxx
H
0000
H
ST9160821AS = 312,581,808
ST9120822AS = 234,441,648
ST9100828AS = 195,371,568
ST980811AS = 156,301,488
ST960813AS = 117,210,240
ST940814AS = 78,140,160
0000
H
0001
H
xxxx
H
0000
H
xxA5
H
Momentus 5400.3 SATA Product Manual, Rev. D
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