Fujitsu MHM2100AT - Mobile 10 GB Hard Drive Product Manual page 118

Table 5.5 Features register values and settable modes
Features
Register
X'02' Enables the write cache function.
X'03' Transfer mode depends on the contents of the Sector Count register.
(Details are given later.)
X'05' Enables the advanced power management function.
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'CC' Enables the reverting to power-on default settings after software reset.
At power-on or after hardware reset, the default mode is the same as that is set
with a value greater than X'85' (except for write cache). If X'66' is specified, it
allows the setting value greater than X'AA' which may have been modified to a
new value since power-on, to remain the same even after software reset.
C141-E104-03EN
Drive operation mode
5.3 Host Commands
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