Interface
Table 5.7 Features Register values (subcommands) and functions (2 of 3)
Features Resister |
|
|
| Function | |
X’D5’ | SMART READ LOG: |
|
| ||
| A device which receives this | ||||
| the log sector specified in the SN register. Next, it clears the BSY bit and | ||||
| transmits the log sector to the host computer. | ||||
|
| SN: | SC: | Log sector |
|
|
| 00h: | 01h: | SMART log directory | |
|
| 01h: | 01h: | SMART summary error log | |
|
| 02h: | 33h: | SMART comprehensive error log | |
|
| 06h: | 01h: | SMART | |
|
| 09h: | 01h: | SMART selective | |
|
| Host vendor log |
*See Table 5.16 concerning the SMART error log data format. See Table 5.18 concerning the SMART
X’D6’ | SMART WRITE LOG: |
| |
| A device which receives this | ||
| has prepared to receive data from the host computer, it sets DRQ and clears | ||
| the BSY bit. Next, it receives data from the host computer and writes the | ||
| specified log sector in the SN register. | ||
| SN: | SC: | Log sector |
| 09h: | 01h: | SMART selective |
| Host vendor log | ||
| * The host can write any desired data in the host vendor log. | ||
X’D8’ | SMART ENABLE OPERATIONS: | ||
| This subcommand enables the failure prediction feature. The setting is | ||
| maintained even when the device is turned off and then on. | ||
| When the device receives this subcommand, it asserts the BSY bit, enables | ||
| the failure prediction feature, then clears the BSY bit. | ||
X’D9’ | SMART DISABLE OPERATIONS: | ||
| This subcommand disables the failure prediction feature. The setting is | ||
| maintained even when the device is turned off and then on. | ||
| When the device receives this subcommand, it asserts the BSY bit, disables | ||
| the failure prediction feature, then clears the BSY bit. |