5.3 Host Commands

 

 

Table 5.29 FEATURE CONTROL COMMAND

 

 

 

 

 

 

 

 

 

Byte(hex)

Name

Value

 

 

Description

 

 

 

 

 

 

 

 

00, 01

Action Code

0004h

FEATURE CONTROL COMMAND

 

 

 

 

 

 

 

 

 

 

 

0001h

Set New State

 

 

 

 

 

 

 

 

 

 

Function

 

Return Current State

 

 

02, 03

0002h

Current Feature Control State is displayed in SN/SC

 

 

Code

 

 

 

 

field.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0003h

Return Option Flag

 

 

 

 

Current Option Flag is displayed in SN/SC field.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0001h

Write Cache

 

 

 

04, 05

Feature Code

 

 

 

 

 

0002h

Write Reordering

 

 

 

 

 

 

 

 

 

 

 

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.

 

 

 

 

 

 

 

 

 

 

 

Feature Code = 0002h(Set Write Reordering)

 

 

06, 07

New State

(2 byte)

0001h: Enable Write Reordering

 

 

 

 

 

 

 

 

 

 

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

 

 

 

 

 

Bit0: 1 = Maintain the state at COMRESET/Power

 

 

08, 09

Option Flag

(2 byte)

 

cycle.

 

 

 

 

 

 

0 = Revert to default setting at

 

 

 

 

 

 

COMRESET/Power cycle.

 

 

 

 

 

 

 

 

 

 

0A to 1FF

(Reserved)

-

Reserved

 

 

 

 

 

 

 

 

 

 

 

C141-E269

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Fujitsu MHY2040BS, MHY2160BS, MHY2200BS, MHY2120BS, MHY2080BS, MHY2060BS, MHY2100BS manual Feature Control Command