12.32 S.M.A.R.T. Function Set (B0h)
see below
Status
1 0 1 1 0 0 0 0
Command
- - - - - - - -
Device/Head
1 - 1 D - - - -
Device/Head
- - - - - - - -
Cylinder High
1 1 0 0 0 0 1 0
Cylinder High
- - - - - - - -
Cylinder Low
0 1 0 0 1 1 1 1
Cylinder Low
- - - - - - - -
Sector Number
- - - - - - - -
Sector Number
- - - - - - - -
Sector Count
V V V V V V V V
Sector Count
see below
Error
V V V V V V V V
Feature
- - - - - - - -
Data
- - - - - - - -
Data
7 6 5 4 3 2 1 0
Register
7 6 5 4 3 2 1 0
Register
Command Block Input
Registers
Command Block Output
Registers
V
–
0
–
V
0
V
0
V
0
V
0
V
0
V
0
ERR
IDX
COR
DRQ
DSC
DF
RDY
BSY
AMN
T0N
ABT
0
IDN
0
UNC
CRC
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
Status Register
Error Register
Figure 127. S.M.A.R.T. Function Set Command (B0h)
The S.M.A.R.T. Function Set command provides access to Attribute Values, Attribute Thresholds, and
other low level subcommands that can be used for logging and reporting purposes and to accommodate
special user needs. The S.M.A.R.T. Function Set command has several separate subcommands which
are selectable via the Features Register of the device when the S.M.A.R.T. Function Set command is
issued by the host.
In order to select a subcommand the host must write the subcommand code to the Features Register of
the device before issuing the S.M.A.R.T. Function Set command. The subcommands and their respective
codes are listed below.
SMART Enable/Disable Automatic Off Line
DBh
SMART Return Status
DAh
SMART Disable Operations
D9h
SMART Enable Operations
D8h
SMART Write Log Sector
D6h
SMART Read Log Sector
D5h
SMART Execute Off-line Immediate
D4h
SMART Save Attribute Values
D3h
SMART Enable/disable Attribute Autosave
D2h
SMART Read Attribute Thresholds
D1h
SMART Read Attribute Values
D0h
Subcommand
Code
Deskstar 40GV & 75GXP hard disk drive specifications
165
Содержание DTLA-305040 - Deskstar 41.1 GB Hard Drive
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