FUJITSU MCM3064AP - Manual (Page 107)

4.5 ATA Commands
C156-E227-01EN 4-37
4.5.10 SET FEATURES (EFh)
Table 4.31 SET FEATURES command
Bit
7 6 5 4 3 2 1 0
CM 1 1 1 0 1 1 1 1
DH X X X DRV X X X X
CH X X X X X X X X
CL X X X X X X X X
SN X X X X X X X X
SC Setting value
FR Setting value
The SET FEATURES command changes the ODD operating mode to the mode
set in the SC and FR registers. If the specified value is not supported by the ODD
or an invalid value, the ODD reports Aborted Command.