43
within plumbum or powder etc.
11.Abbreviation:
ABB
：
Analog Base Band
AFC
：
Automatic Frequency Control
APC
：
Automatic Power Control
BGA
：
Ball Grid Array
：
a kind of encapsulation of chip in common
CMII
：
Ministry of Information Industry, China. Abbreviation of The Information Industries Department which
issues permit to enters the net
CPU
：
Central Process Unit
CSTN
：
Color Super Twisted Nematic
DBB
：
Digital Base Band
DNP
：
Don’t Process
，
as the same meaning with NC, denote element which no need to jointing in the
structure figure
DSP
：
Digital Signal Processor
GSM
：
Global System for Mobile communications
H/W
：
HardWare
I2C
：
Inter IC Control
：
A bunch communication protocol standard that advanced by Philps, contains two
circuitry which are clock and data
IMEI
：
International Mobile Equipment Identity
IMSI
：
International Mobile Subscriber Identification
I/O
：
Input/Output
ISO
：
International Standards Organization
JTAG
：
Joint Test Action Group
Flash
：
Flash E2PROM
LCD
：
Liquid Crystal Display
LCM
：
LCD Module
：
Indicate a module in mobile phone----it not only contain LCD display function, but also
contain backlight control function, Speaker, Receiver and Motor (even Sensor) and any other interface
commonly. It is an important composing module in mobile phone
MCC
：
Mobile Country Code
：
3digit, stand for country code that user in
MCU
：
Micro-Controller Unit
MNC
：
Mobile Network Code
：
2digit, stand for network code user in
MSIN
：
Mobile Subscriber Identification Number
：
Use to identify mobile subscriber in mobile
communication network
NC
：
Not Connect
：
As the same meaning of DNP, denote element which no need to jointing in the
structure figure
PLL
：
Phase Loop Lock
PWL
：
Pseudo-noise pulse Width Light
：
A function module in U201 DBB, output pulse width modulated
signal
PWT
：
Pulse Width Tone Generator
：
Similar with PWL, output pulse width modulated signal too
RISC
：
Reduced Instruction Set Computer
RAM
：
Random Access Memory
ROM
：
Read Only Memory
RTC
：
Real Time Clock
SIM
：
Subscriber Identity Module
S/W
：
SoftWare
TDMA
：
Time Division Multiple Access
TMSI
：
Temporary Mobile Subscriber Identification
TPU
：
Time Processing Unit
——
A function processing unit in U200 DBB unit
TSP
：
Time Serial Port
——
A function processing unit in U200 DBB unit
USART
：
Universal Synchronous/Asynchronous Receiver Transmitter
USB
：
Universal Serial Bus
Summary of Contents for W420
Page 1: ...Voxtel Repair Manual Item W420 ...
Page 23: ...23 3 LDO circuit ...
