Only For Training And Service Purposes - LG GB220 Service Manual

3. TECHNICAL BRIEF
3.2.14 Power Down Sequence
Setting bit OFF in the GeneralControl register switches the system into OFF mode. After the turn off event,
the state-machine switches to the SHUTDOWN state. The reset_pmu_n_o signal changes to low, the I/O
pads are isolated using the padisolation_n signal, the LCORE LDO and the SD1 DC/DC converter are
switched off, the LPMU LDO is switched to ultra-low power mode, the DCXO is turned off and the bandgap
buffer is disabled. Before switching OFF the software shall have enabled the 32 kHz oscillator and has
switched the PMU clock to the 32 kHz clock to archive the target OFF current
LGE Internal Use Only
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
- 34 - Copyright © 2009 LG Electronics. Inc. All right reserved.

Only for training and service purposes

Only for training and service purposes