Fujitsu MHV2040BH Product Manual page 178

Interface
Table 5.26 Features field values and settable modes (2/2)
Features
Field
X ' AA ' Enables the read cache function.
Specifies the transfer of 4-byte ECC for READ LONG and WRITE LONG
X ' BB '
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
Transfer mode
Advanced power
management function
Acoustic
management function
Read cashe function
At power-on or COMRESET, the default mode of Serial ATA function is set as
follows:
DMA Setup FIS Auto-Activate optimization
Device-initiated interface power state Transitions
Software Settings Preservation
•
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
DH
CH
CL
SN
SC
FR
5-102
Drive operation mode
: Enabled
: PIO Mode-4, Multiworld DMA Mode-2
: Enabled (Mode-1)
: State keeping
: Enabled
1 1 1 0
x x x x
xx
xx
xx
xx or *1~3
[See Table 5.6]
: Disabled
: Disabled
: Enabled
1 1 1 1
xx
C141-E224