Interface

Table 5.7 Features register values (subcommands) and functions (1 of 3)

Features Resister

 

Function

X’D0’

SMART READ DATE:

 

A device that received this subcommand asserts the BSY bit and saves all

 

the updated attribute values. The device then clears the BSY bit and

 

transfers 512-byte attribute value information to the host.

 

* For information about the format of the attribute value information, see

 

Table 5.8.

X’D1’

SMART READ ATTRIBUTE THRESHOLDS:

 

This subcommand is used to transfer 512-byte insurance failure threshold

 

value data to the host.

 

* For information about the format of the insurance failure threshold value

 

data, see Table 5.9.

X’D2’

SMART ENABLE/DISABLE ATTRIBUTE AUTOSAVE:

 

Enables (by setting the SC register to a value other than 00h) or disables (by

 

setting the SC register to 00h) a function that automatically saves device

 

attribute values (“automatic attribute save function”). This setting is held

 

regardless of whether the device is turned on or off. If the automatic

 

attribute save function is enabled and more than 15 minutes has elapsed

 

since the last time that attributes were saved, then the attributes are saved.

 

However, if the automatic attribute save function is disabled, the attributes

 

are not saved. Upon receiving this subcommand, a device asserts BSY,

 

enables or disables the automatic attribute save function, and clears BSY.

 

 

 

 

X’D3’

SMART SAVE ATTRIBUTE VALUES:

 

When the device receives this subcommand, it asserts the BSY bit, saves

 

device attribute value data, and then clears the BSY bit.

X’D4’

SMART EXECUTIVE OFF-LINE IMMEDIATE:

 

A device which receives this command asserts the BSY bit, then starts

 

collecting the off-line data specified in the SN register, or stops.

 

In the off-line mode, after BSY is cleared, off-line data are collected. In the

 

captive mode, it collects off-line data with the BSY assertion as is, then

 

clears the BSY when collection of data is completed.

 

 

SN Off-line data collection mode

 

 

 

00h: Off-line diagnosis (off-line mode)

 

 

01h: Simple self-test (off-line mode)

 

 

02h: Comprehensive self-test (off-line mode)

 

 

03h: Conveyance self-test (off-line mode)

 

 

04h: Selective self-test (off-line mode)

 

 

7Fh: Self-test stop

 

 

81h: Simple self-test (captive mode)

 

 

82h: Comprehensive self-test (captive mode)

 

 

83h: Conveyance self-test (captive mode)

 

 

84h: Selective self-test (captive mode)

 

 

 

 

5-42

C141-E217

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Fujitsu MHV2080AH, MHV2100AH, MHV2060AH, MHV2040AH manual Features register values subcommands and functions 1
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