Fujitsu MJA2500BH Maintenance Manual - Page 153
Table 5.29, FEATURE CONTROL COMMAND, Current Feature Control State is displayed in SN/SC
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5.3 Host Commands Table 5.29 FEATURE CONTROL COMMAND Byte(hex) Name 00, 01 Action Code 02, 03 Function Code 04, 05 Feature Code Value Description 0004h FEATURE CONTROL COMMAND 0001h Set New State 0002h 0003h 0001h 0002h 0003h Return Current State Current Feature Control State is displayed in SN/SC field. Return Option Flag Current Option Flag is displayed in SN/SC field. Write Cache Write Reordering 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. 06, 07 New State 08, 09 Option Flag 0A to 1FF (Reserved) (2 byte) (2 byte) - Feature Code = 0002h(Set Write Reordering) 0001h: Enable Write Reordering 0002h: Disable Write Reordering 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. Bit 15-1: Reserved Bit0: 1 = Maintain the state at COMRESET/Power cycle. 0 = Revert to default setting at COMRESET/Power cycle. Reserved C141-E293 5-79