LG -A290 Service Manual page 23

3.2.1 Power On
Together with Power Management IC (PMIC), MT653 offers both fine and coarse resolutions of power control through
software programming. With this efficient method, the developer can turn on selective resources accordingly in order to
achieve optimized power consumption. The operating modes of MT653 as well as main power states provided by the
PMIC are shown in Figure.3..1.
Power On
Power On
Active State
Figure 3.2.1. Major Phone Power States and Operating Modes for MT6253 based terminal
LGE Internal Use Only
Active
Software
Mode
Program
Core
Processors
Power Software
Down Mode
Program
Core
Processors
Phone Power State
Core Operating Mode
Sleep
Mode
Software
Program
Active
Mode
- 3 - Copyright © 01 LG Electronics. Inc. All right reserved.
3. TECHNICAL BRIEF
Pause
Mode
Core
Standby State
Only for training and service purposes