Fujitsu MHR2020AT Computer Drive User Manual


 
Interface
5-44 C141-E145-02EN
Table 5.5 Features register values and settable modes
Features
Register
Drive operation mode
X’02’ Enables the write cache function.
X’03’ Set the data transfer mode. *1
X’05’ Enables the advanced power management function. *2
X’42’ Enables the Acoustic management function. *3
X’55’ Disables read cache function.
X’66’ Disables the reverting to power-on default settings after software reset.
X’82’ Disables the write cache function.
X’85’ Disables the advanced power management function.
X’AA’ Enables the read cache function.
X’BB’ Specifies the transfer of 4-byte ECC for READ LONG and WRITE
LONG commands.
X’C2’ Disables the Acoustic management function.
X’CC’ Enables the reverting to power-on default settings after software reset.
At power-on or after hardware reset, 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 : Disabled (Standard Seek)
Read cashe function : Enabled
Default setting
after software reset : Disabled