Operations
takes longer than the active or Idle mode because the access to the disk medium cannot be made immediately.
The drive enters the standby mode under the following conditions:
•
•
•
A STANDBY or STANDBY IMMEDIATE command is issued in the active or idle mode.
When automatic power down sequence is enabled, the timer has elapsed.
A reset is issued in the sleep mode.
When one of following commands is issued, the command is executed normally and the device is still stayed in the standby mode.
•
•
•
•
•
Reset (hardware or software)
STANDBY command
STANDBY IMMEDIATE command
INITIALIZE DEVICE PARAMETERS command
CHECK POWER MODE command
(4) Sleep mode
The power consumption of the drive is minimal in this mode. The drive enters only the standby mode from the sleep mode. The only method to return from the standby mode is to execute a software or hardware reset.
The drive enters the sleep mode under the following condition:
•A SLEEP command is issued.
Issued commands are invalid (ignored) in this mode.
6.2.2 Power commands
The following commands are available as power commands.
•
•
•
•
•
•
IDLE
IDLE IMMEDIATE
STANDBY
STANDBY IMMEDIATE
SLEEP
CHECK POWER MODE
