FUJITSU MHZ2250BJ - Manual (Page 153)

5.3 Host Commands
Table 5.29 FEATURE CONTROL COMMAND
Byte(hex) Name Value Description
00, 01 Action Code 0004h FEATURE CONTROL COMMAND
0001h Set New State
0002h
Return Current State
Current Feature Control State is displayed in SN/SC
field. 02, 03
Function
Code
0003h
Return Option Flag
Current Option Flag is displayed in SN/SC field.
0001h Write Cache
0002h Write Reordering 04, 05 Feature Code
0003h Set time interval for temperature logging
Feature Code = 0001h (Set Write Cache)
0001h: Allow write cache operation to be determined
by ATA Set Feature command.
0002h: Force Write Cache enabled.
0003h: Force Write Cache disable.
Feature Code = 0002h(Set Write Reordering)
0001h: Enable Write Reordering
0002h: Disable Write Reordering
06, 07 New State (2 byte)
Feature Code = 0003h(Set time interval)
0000h: Invalid
0001h-FFFFh: Logging interval in minutes
(ex.) 0001h: Temperature data collection
interval is 1min.
000Fh: Temperature data collection
interval is 15min.
08, 09 Option Flag (2 byte)
Bit 15-1: Reserved
Bit0: 1 = Maintain the state at
COMRESET/Power cycle.
0 = Revert to default setting at
COMRESET/Power cycle.
0A to 1FF (Reserved) - Reserved
C141-E280 5-79