5.3 Host Commands
(12) STANDBY (X '96' or X 'E2')
Upon receipt of this command, the device enters the standby mode. If the device has already spun down, the
If the Sector Count field has a value other than "0," the APS timer is set when the command is received. When the device receives the command involving a seek such as media access command, the device processes the command after transition to Active mode. After that, the device enters the command waiting state, and the timer starts to count down. If a command is not received within the period specified as the APS timer value, the device automatically enters Standby mode. If the Sector Count field value is "0" the APS timer is disabled when the command is received.
Under the standby mode, the spindle motor is stopped. Thus, when the command involving a seek such as READ SECTOR(s) command is received, the device processes the command after driving the spindle motor.
•Error reporting conditions
(1)A SATA communication error occurred (ST = 51h, ER = 14h).
At command issuance (Shadow Block Registers setting contents)
CM |
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| X '96' or X 'E2' |
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DH | x | x | x | x |
| xx |
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CH |
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| xx |
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CL |
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| xx |
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SN |
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| xx |
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SC |
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| Period of timer |
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FR |
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| xx |
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At command completion (Shadow Block Registers contents to be read)
ST |
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| Status information |
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DH | x | x | x |
| x |
| xx |
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CH |
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| xx |
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CL |
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| xx |
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SN |
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| xx |
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SC |
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| xx |
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ER |
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| Error information |
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