FUJITSU MHV2160BT User Manual

Page 195

5.3 Host Commands

C141-E239

5-119

Table 5.35 Features field values and settable modes (2/2)

Features

Field

Drive operation mode

X ' 85 '

Set the advanced power management mode to Mode-0.

X ' 86 '

Disables the Power-Up In Standby function. (Note)

X ' 88 '

Undefined (Note)

X ' 8B '

Disable Write Read Verify (T13 Proposal)

X ' 90’

Disables the Serial ATA function.

X ' AA '

Enables the read cache function.

X ' BB '

Specifies the transfer of 4-byte ECC for READ LONG and WRITE LONG
commands. (Note)

X ' C2 '

Disables the Acoustic management function.

X ' CC '

Enables the reverting to power-on default settings after software reset. (Note)

X ' DF '

Disable DRQ bit shall be zero when ERR bit is one. (T13 Proposal)

There is a dummy transferring when the error occurs by Read system command
of PIO.

Note: It does not actually function only by displaying Identify Device.

Note: Although there is a response to the command, nothing is done.

At power-on, the default mode is set as follows:

Write cashe function

: Enabled

Transfer mode

: PIO Mode-4, Multiworld DMA Mode-2

Advanced

power

management function

: Enabled (Mode-1)

Acoustic
management function

: State keeping

Read cashe function

: Enabled

At power-on or COMRESET, the default mode of Serial ATA function is set as
follows:

DMA Setup FIS Auto-Activate optimization

: Disabled

Device-initiated interface power state Transitions

: Disabled

Software Settings Preservation

: Enabled