Seagate BARRACUDA ST31000524AS User Manual
Page 37
Barracuda SATA Product Manual, Rev. A
37
87
Command sets enable extension
4000
H
88
Ultra DMA support and current mode (see note fol-
lowing this table)
xx3F
H
89
Security erase time
0000
H
90
Enhanced security erase time
0000
H
92
Master password revision code
FFFE
H
93
Hardware reset value
xxxx
H
95–99
ATA-reserved
0000
H
100–103
Total number of user-addressable LBA sectors avail-
able (see Section 2.1 for related information). These
words are required for drives that support the 48-bit
addressing feature. Maximum value:
0000FFFFFFFFFFFFh.
ST31000524AS = 1,953,525,168
ST3750525AS = 1,465,149,168
ST3500413AS = 976,773,168
ST3320413AS = 625,142,448
ST3250312AS = 488,397,168
ST3160316AS = 312,581,808
104–107
ATA-reserved
0000
H
108–111
The mandatory value of the world wide name (WWN)
for the drive. NOTE: This field is valid if word 84, bit 8
is set to 1 indicating 64-bit WWN support.
Each drive will have a unique value.
112–127
ATA-reserved
0000
H
128
Security status
0001
H
129–159
Seagate-reserved
xxxx
H
160–254
ATA-reserved
0000
H
255
Integrity word
xxA5
H
Note
Advanced Power Management (APM) and Automatic Acoustic Management (AAM) features are not
supported.
Note
See the bit descriptions below for words 63, 84, and 88 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 84
Word
Description
Value