Huawei Ascend - Bluetooth

Y210 Mobile Phone
Maintenance Manual
9 Principles and Failure Analysis
Issue 1.0 (2012-11-28)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
23
Subsystem
Module
Unit
Function
interfaces.
Multimedia and game engine
The multimedia and game engine of
the MSM7227 runs Mpeg/jpeg
hardware engine and game engine,
JAVA accelerator, and provides
MP3/MMS/MIDI functions.

MP3 = MPEG audio layer-3

MMS = multimedia messaging
service

MIDI = musical instrument digital
interface
PM8029
Power supply voltage
monitoring
Lists objects being monitored, such as
the external power supply input,
Li-ion battery, and charger.
Temperature monitoring
Monitors the battery temperature.
NAND
NAND feature, power
consumption, file system
support
Stores applications and NV items.
Capacity: 4 GB.
DDR1 RAM
Memory
Provides storage space for running
applications. Capacity: 512 GB.
RAM = random access memory
RF
subsystem
WCDMA, and
GSM/DCS signal
transmission and
reception
AFC circuit, APC circuit, AGC
circuit, and each component
Performs the RF function of
WCDMA signal reception and
transmission, and mainly includes the
RTR6285A RF chip and the
peripheral circuit.
GPS
GPS reception
Receives and processes GPS signals
and mainly includes the RTR6285A
chip and the peripheral circuit.
Bluetooth interface
Bluetooth/Wi-Fi/Frequency
modulation (FM) 3-in-1
module
Performs baseband function for
Bluetooth and Wi-Fi signals, and
transmits and receives Bluetooth and
Wi-Fi RF signals. It mainly includes
the Bluetooth and Wi-Fi module and
its peripheral circuit.
Wi-Fi interface
Same as the Bluetooth
interface.
Same as the Bluetooth interface.
Oscillator and
frequency
synthesizer
Crystal oscillators
Generates highly accurate VCTCXO
frequency for the 19.2 MHz local
reference clock. The RTR6285A has a
built-in local oscillator (LO)
providing clock frequency for
transmitting and receiving WCDMA
and GPS signals.
VCTCXO = Voltage Controlled