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4.4.7.6 Sleep mode
Sleep mode uses power consumption as standby mode. To set the ODD in sleep mode, the host
must issue the Sleep command. To restore the ODD from sleep mode, hardware reset or software
reset is required. The host must not issue any command after the Sleep command. The ODD
requires 15 seconds (standard) to respond.
4.4.7.7 Standby timer
The standby timer is used to count the time during which the host issues no command.
The standby timer value is programmable with the MODE SELECT command. The default value
is 32 minutes.
4.4.7.8 Power mode transition
The power mode transits as shown in Figure 4.1.
(1) The ODD enters idle mode because it receives the Idle Immediate command or because it receives
no commands within a specified time.
(2) The ODD enters idle mode with the Idle Immediate command.
(3) The ODD enters standby mode with the Standby Immediate command and standby timer.
(4) The ODD enters active mode because it receives a media access command.
(5) The ODD enters sleep mode with the Sleep command.
Figure 4.1 Power mode
Media is inserted.
Active
Reset
Standby mode
Idle
Sleep
Media is ejected.
(1)
(4)
(5)
(5)
(2)
(3)
(5)
(4)
(3)