Key Circuit - Huawei G700-U10 Maintenance Manual

G700-U10 Smartphone
Maintenance Manual
Circuit Signals
Table 10-10 Circuit signals of this section
Signal
VDD28_PMU
EINT2_P_SENSOR Interrupt signal
SCL0
SDA0

10.4.7 Key Circuit

Circuit Diagram
Figure 10-39 Key circuit
Issue 1.0 (2013-07-22)
Description
Sensor power supply
I2C signal, used to read the light,
proximity, and IR sensing information
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10 Circuit and Failure Analysis
Reference Value or
Waveform
2.8 V
Effective when at low level
When no signal is
transferring, the level is
high.
High and low pulses
High and low pulses
66