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Interface
Table 5.30 FEATURE CONTROL COMMAND
Byte
Name
000h
Action Code
001h
002h
Function Code
003h
004h
Feature Code
005h
006h
New State
007h
008h
Option Flag
009h
00Ah
to
(Reserved)
1FFh
5-80
Value
0004h
FEATURE CONTROL COMMAND
0001h
Set New State
Return Current State
0002h
Current Feature Control State is displayed in SN/SC
field.
Return Option Flag
0003h
Current Option Flag is displayed in SN/SC field.
0001h
Write Cache
Write Reordering
0002h
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
(2 byte)
0002h: Disable Write Reordering
Feature Code = 0003h(Set time interval)
0000h: Invalid
0001h-FFFFh: Logging interval in minutes
(ex.) 0001h:
000Fh:
Bit 15-1: Reserved
Bit0: 1 = Maintain the state at COMRESET/Power
(2 byte)
cycle.
0 = Revert to default setting at
COMRESET/Power cycle.
-
Reserved
Description
Temperature data collection
interval is 1min.
Temperature data collection
interval is 15min.
C141-E244
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