Interface

Table 5.9 Features Field values (subcommands) and functions (2/3)

Features Field

 

 

 

Function

X 'D5'

SMART READ LOG:

 

 

 

A device which receives this sub-command reads the log sector specified in

 

the Sector Number Field. Next, it transfers the PIOSU and transmits the log

 

sector to the host computer.

 

 

SN:

SC:

Log sector

 

 

 

00h:

01h:

SMART log directory

 

 

01h:

01h:

SMART summary error log

 

 

02h:

33h:

SMART comprehensive error log

 

 

06h:

01h:

SMART self-test log

 

 

09h:

01h:

SMART selective self-test log

 

 

80h-9Fh:

01h-10h:

Host vendor log

 

 

E0h:

01h:

SCT Status Request

 

 

E1h:

 

SCT Read Data

*See Table 5.18 concerning the SMART error log data format. See Table 5.20 concerning the SMART self-test log data format. See Table 5.21 concerning the SMART selective self-test log data format.

See Table 5.24 concerning the SCT Status Request data format.

X 'D6'

SMART WRITE LOG:

 

 

A device which receives this sub-command, when it has prepared to receive

 

data from the host computer, it transfers the PIOSU. Next, it receives data

 

from the host computer and writes the specified log sector in the Sector

 

Number Field.

 

 

 

SN:

SC:

Log sector

 

09h:

01h:

SMART selective self-test log

 

80h-9Fh: 01h-10h

Host vendor log

 

E0h:

01h:

SCT Command Set

 

E1h:

 

SCT Read Data

 

* The host can write any desired data in the host vendor log.

 

See Table 5.27 to 5.30 concerning the SCT Command Set data format.

 

 

X 'D8'

SMART ENABLE OPERATIONS:

 

This subcommand enables SMART. The setting is maintained even when

 

the device is turned off and then on.

 

When the device receives this subcommand, it enables SMART, then

 

transfers the RegDH.

 

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