Interface
Table 5.30 FEATURE CONTROL COMMAND
Byte | Name | Value |
| Description | |
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000h | Action Code | 0004h | FEATURE CONTROL COMMAND | ||
001h | |||||
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| 0001h | Set New State | ||
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002h |
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| Return Current State | ||
Function Code | 0002h | Current Feature Control State is displayed in SN/SC | |||
003h | |||||
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| field. |
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| 0003h | Return Option Flag | ||
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| Current Option Flag is displayed in SN/SC field. | |||
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004h |
| 0001h | Write Cache | ||
Feature Code | 0002h | Write Reordering | |||
005h | |||||
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| 0003h | Set time interval for temperature logging | ||
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| Feature Code = 0001h (Set Write Cache) | ||
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| 0001h: Allow write cache operation to be determined | ||
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| by ATA Set Feature command. | |
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| 0002h: Force Write Cache enabled. | ||
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| 0003h: Force Write Cache disable. | ||
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006h |
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| Feature Code = 0002h(Set Write Reordering) | ||
New State | (2 byte) | 0001h: | Enable Write Reordering | ||
007h | |||||
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| 0002h: | Disable Write Reordering | ||
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| Feature Code = 0003h(Set time interval) | ||
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| 0000h: Invalid | ||
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| (ex.) 0001h: Temperature data collection | ||
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| interval is 1min. | |
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| 000Fh: Temperature data collection | ||
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| interval is 15min. | |
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| Bit | ||
008h | Option Flag | (2 byte) | Bit0: 1 = Maintain the state at COMRESET/Power | ||
| cycle. | ||||
009h |
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| 0 = Revert to default setting at | |||
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| COMRESET/Power cycle. | |
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00Ah |
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to | (Reserved) | - | Reserved |
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1FFh |
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