Huawei U9500 Maintenance Manual page 44

U9500 Maintenance Guide
Subsystem Module
Vibrator
interface
Acceleration
sensor
Gyroscope
Compass
Proximity
sensor
Power Internal
Supply backup
battery
External
power supply
(travel
charger)
Power
distribution
network and
power
management
function
TWL6030's
enhanced
functions
Issue 1.2 (2012-6-30)
Unit Function
Drive mode, Vibrates when a call is received.
connection mode,
and vibrator
Controlled by the The acceleration sensor is an auxiliary module of the game
I2C interface engine.
Controlled by the
Tri-axis angular rate sensor
I2C interface
Controlled by the Geomagnetic sensor.
I2C interface
Controlled by the Senses ambient light and proximity light.
I2C interface
Li-ion battery and The nominal output of Li-ion battery is 4.35 V/1800 mAh
interface related with the number of charging/discharging times over 500.
components (The Li-ion battery must meet the safety requirements in
GB18287.)
Power adapter The charger with 90–240 V, 45–55 Hz AC input can be
and interface used in China, Europe, America, and Australia. The output
related voltage of the charger is 5± 0.25 V. The charger must pass
components CE (Europe), 3C (China), FCC (North America), A-tick
(Australia) authentication. The charger can charge and
supply power to the phone simultaneously.
Power Includes all filtering networks and cables.
distribution
network
Backup battery Manages battery charging and discharging, protects the
management, battery from being over-charged and over-discharged, and
charging circuit, charges the capacitor that maintains the RTC current.
charging mode,
over charge
protection
Power Mainly indicates LDO, which manages power supply
management for flexibly. The PCBA software manages power supplies to
PCBA circuits circuits on the PCBA according to service status,
(power-on and protocols, or power-saving analysis to decrease the mobile
power-off phone's power consumption. The software also provides a
analysis) three-line 32 kHz clock.
A 32.768 kHz sleep clock is used for embedded RTC
RTC
circuit to provide accurate time.
HKADC 17-line 10 bit analog signal input supported.
Dual I2C I2C controller and SMART REFLEX I2C.
interfaces
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
9 Troubleshooting
39