G700-U10 Smartphone
Maintenance Manual
10 Circuit and Failure Analysis
Issue 1.0 (2013-07-22)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
66
Circuit Signals
Table 10-10
Circuit signals of this section
Signal
Description
Reference Value or
Waveform
VDD28_PMU
Sensor power supply
2.8 V
EINT2_P_SENSOR Interrupt signal
Effective when at low level
When no signal is
transferring, the level is
high.
SCL0
I2C signal, used to read the light,
proximity, and IR sensing information
High and low pulses
SDA0
High and low pulses
10.4.7 Key Circuit
Circuit Diagram
Figure 10-39
Key circuit