Interface

Table 5.26 Features field values and settable modes (2/2)

Features

Drive operation mode

Field

 

 

 

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)

 

 

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

Error reporting conditions

(1)An undefined code is specified in the FR or SC field (ST = 51h, ER = 04h).

(2)A SATA communication error occurred (ST = 51h, ER = 14h).

At command issuance (Shadow Block O registers setting contents)

CM

1

1

1

0

1

 

1

 

1

1

 

 

 

 

 

 

 

 

 

 

 

DH

x

x

x

x

 

 

 

xx

 

 

 

 

 

 

 

 

 

 

 

CH

 

 

 

 

xx

 

 

 

 

CL

 

 

 

 

xx

 

 

 

 

SN

 

 

 

 

xx

 

 

 

 

SC

 

 

 

xx or *1~3

 

 

 

 

FR

 

 

 

[See Table 5.6]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5-102

C141-E224

Page 178
Image 178
Fujitsu MHV2040BH, MHV2100BH, MHV2080BH, MHV2060BH Features field values and settable modes 2/2, Error reporting conditions