Interface

Table 5.30 FEATURE CONTROL COMMAND

Byte

Name

Value

 

Description

 

 

 

 

 

000h

Action Code

0004h

FEATURE CONTROL COMMAND

001h

 

 

 

 

 

 

0001h

Set New State

 

 

 

 

002h

 

 

Return Current State

Function Code

0002h

Current Feature Control State is displayed in SN/SC

003h

 

 

field.

 

 

 

 

 

 

 

0003h

Return Option Flag

 

 

Current Option Flag is displayed in SN/SC field.

 

 

 

 

 

 

 

004h

 

0001h

Write Cache

Feature Code

0002h

Write Reordering

005h

 

 

 

 

 

 

0003h

Set time interval for temperature logging

 

 

 

 

 

 

 

Feature Code = 0001h (Set Write Cache)

 

 

 

0001h: Allow write cache operation to be determined

 

 

 

 

by ATA Set Feature command.

 

 

 

0002h: Force Write Cache enabled.

 

 

 

0003h: Force Write Cache disable.

 

 

 

 

006h

 

 

Feature Code = 0002h(Set Write Reordering)

New State

(2 byte)

0001h:

Enable Write Reordering

007h

 

 

0002h:

Disable Write Reordering

 

 

 

 

 

 

Feature Code = 0003h(Set time interval)

 

 

 

0000h: Invalid

 

 

 

0001h-FFFFh: Logging interval in minutes

 

 

 

(ex.) 0001h: Temperature data collection

 

 

 

 

interval is 1min.

 

 

 

000Fh: Temperature data collection

 

 

 

 

interval is 15min.

 

 

 

Bit 15-1: Reserved

008h

Option Flag

(2 byte)

Bit0: 1 = Maintain the state at COMRESET/Power

 

cycle.

009h

 

 

 

0 = Revert to default setting at

 

 

 

 

 

 

 

COMRESET/Power cycle.

 

 

 

 

 

00Ah

 

 

 

 

to

(Reserved)

-

Reserved

 

1FFh

 

 

 

 

5-80

C141-E249

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Fujitsu MHW2060BS, MHW2100BS, MHW2080BS, MHW2120BS, MHW2040BS manual Feature Control Command