Travelstar 5K160 (SATA) Hard Disk Drive Specification

14.40S.M.A.R.T Function Set (B0h)

Command Block Output Registers

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Command Block Input Registers

 

 

 

 

 

 

 

 

 

 

 

 

 

Register

 

 

 

7

6

5

 

4

3

 

2

 

1

 

0

 

 

 

Register

 

 

 

7

6

 

 

 

5

 

4

3

2

 

1

 

0

Data

 

 

 

 

-

-

-

 

-

 

-

 

-

 

-

 

-

 

 

 

Data

 

 

 

 

-

-

 

-

-

-

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-

 

-

Feature

 

 

 

V

V

V

 

V

V

 

V

V

V

 

 

Error

 

 

 

 

 

 

 

...See Below...

 

 

 

Sector Count

 

 

 

V

V

V

 

V

V

 

V

V

 

V

 

 

Sector Count

 

 

 

-

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-

 

-

LBA Low

 

 

 

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LBA Low

 

 

 

-

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-

 

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-

 

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LBA Mid

 

 

 

0

1

0

 

0

1

 

1

 

1

 

1

 

 

 

LBA Mid

 

 

 

-

-

 

 

-

 

-

-

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-

 

-

LBA High

 

 

 

1

1

0

 

0

0

 

0

 

1

 

0

 

 

 

LBA High

 

 

 

-

-

 

 

-

 

-

-

-

 

-

 

-

Device

 

 

 

 

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Device

 

 

 

 

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Command

 

 

 

1

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Status

 

 

 

 

 

 

 

...See Below...

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Error Register

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Status Register

 

 

 

 

 

 

 

 

 

 

 

7

 

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5

4

 

3

 

 

2

 

 

 

1

 

 

 

0

 

 

 

 

7

 

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5

4

3

 

 

2

 

 

1

 

 

0

 

CRC

 

UNC

0

IDN

 

0

 

ABT

 

 

T0N

 

AM

 

 

 

BSY

 

RDY

DF

DSC

DRQ

 

 

COR

IDX

 

ERR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

0

0

0

 

0

 

 

V

 

 

0

 

 

 

0

 

 

 

 

0

 

V

0

V

-

 

 

0

 

 

0

 

 

V

 

Figure 80 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 device’s Features Register when the S.M.A.R.T. Function Set command is issued by the host.

14.40.1S.M.A.R.T. Sub commands

In order to select a subcommand the host must write the subcommand code to the device’s Features Register before issuing the S.M.A.R.T. Function Set command. The subcommands and their respective codes are listed below.

Code

Subcommand

D0h

S.M.A.R.T. Read Attribute Values

D1h

S.M.A.R.T. Read Attribute Thresholds

D2h

S.M.A.R.T. Enable/disable Attribute Autosave

D3h

S.M.A.R.T. Save Attribute Values

D4h

S.M.A.R.T. Execute Off-line Immediate

D5h

S.M.A.R.T. Read Log Sector

D6h

S.M.A.R.T. Write Log Sector

D8h

S.M.A.R.T. Enable Operations

D9h

S.M.A.R.T. Disable Operations

DAh

S.M.A.R.T. Return Status

DBh

S.M.A.R.T. Enable/Disable Automatic Off-Line

14.40.1.1S.M.A.R.T. Read Attribute Values (Subcommand D0h)

This subcommand returns the device’s Attribute Values to the host. Upon receipt of the S.M.A.R.T. Read Attribute Values subcommand from the host, the device saves any updated Attribute Values to the Attribute Data sectors, and then waits for the host to transfer the 512 bytes of Attribute Value information from the device.

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