Function Subcommands; Figure 109. S.m.a.r.t. Function Set Command (B0H) - IBM DJSA-210 - Travelstar 10 GB Hard Drive Specifications

13.32 S.M.A.R.T. Function Set (B0h)
Command Block Output Registers
Register
Data
Feature
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Command
Error Register
7 6 5
CRC UNC 0
0 0 0

Figure 109. S.M.A.R.T. Function Set command (B0h)

The Function Set command provides access to the Attribute Values, the Attribute Thresholds,
S.M.A.R.T.
and other low level subcommands that can be used for logging and reporting purposes and to
accommodate special user needs. The
subcommands which are selectable via the device's Features Register when the
command is issued by the host.
In order to select a subcommand the host must write the subcommand code to the device's Features
Register before issuing the
codes are listed below.
Code Subcommand
D0h
D1h
D2h
D3h
D4h
D5h
D6h
7 6 5 4 3 2 1 0
– – – – – – – –
V V V V V V V V
V V V V V V V V
– – – – – – – –
0 1 0 0 1 1 1 1
1 1 0 0 0 0 1 0
1 – 1 D – – – –
1 0 1 1 0 0 0 0
4 3 2 1
IDN 0 ABT T0N AMN
0 0 V 0
S.M.A.R.T.
Function Set command. The subcommands and their respective
S.M.A.R.T.
S.M.A.R.T. Read Attribute Values
S.M.A.R.T. Read Attribute Thresholds
S.M.A.R.T. Enable/disable Attribute Autosave
S.M.A.R.T. Save Attribute Values
S.M.A.R.T. Execute Off-line Immediate
S.M.A.R.T. Read Log Sector
S.M.A.R.T. Write Log Sector
Travelstar 32GH/30GT/20GN hard disk drive specifications
Command Block Input Registers
Register
Data
Error
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Status
Status Register
0 7 6 5
BSY RDY DF
0 0 V 0
Function Set command has several separate
159
7 6 5 4 3 2 1 0
– – – – – – – –
see below
– – – – – – – –
– – – – – – – –
– – – – – – – –
– – – – – – – –
– – – – – – – –
see below
4 3 2 1 0
DSC DRQ COR IDX ERR
V – 0 – V
Function Set
S.M.A.R.T.