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12.12 Idle (E3h/97h)
The Idle command causes the device to enter Idle mode immediately and set auto power down timeout parameter
(standby timer). And then the timer starts counting down.
When the Idle mode is entered, the device is spun up to operating speed. If the device is already spinning, the spin
up sequence is not executed.
During Idle mode the device is spinning and ready to respond to host commands immediately.
Table 108 Idle Command (E3h/97h)
Command Input
Field
Description
FEATURE
N/A
COUNT
Standby timer period
LBA
N/A
DEVICE
Bit Description
7 Obsolete
6 N/A
5 Obsolete
4 Transport Dependent
3:0 Reserved
Command
7:0 E3h or 97h
Normal Outputs
See Normal Outputs in 12.7 Flush Cache (E7h)
Error Outputs
Field
Description
ERROR
Bit Description
7:3 N/A
2 ABORT bit
1:0 N/A
COUNT
N/A
LBA
LBA of First Unrecoverable Error
DEVICE
Bit Description
7 Obsolete
6 N/A
5 Obsolete
4 Transport Dependent
3:0 Reserved
STATUS
Bit Description
7:6 Transport Dependent
5 DEVICE FAULT bit
4 N/A
3 Transport Dependent
2 N/A
1 SENSE DATA AVAILABLE bit
0 ERROR bit
173
Hard Disk Drive Specification