ABBERVATIONS USED IN CELLPHONETECHNOLOGY

Definition of Abbreviations on Mobile Phones Circuit

0
2G  2nd Generation

3G 3rd Generation

3Gs 3rd Generation speed

4G 4th Generation

A
A/D-converter Analog-to-digital converter

ACI Accessory Control Interface

ADC Analog-to-digital converter

ADSP Application DPS (expected to run high level tasks)

AGC Automatic gain control (maintains volume)

ALS Ambient light sensor

AMSL After Market Service Leader

ARM Advanced RISC Machines

ARPU Average revenue per user (per month or per year)

ASIC Application Specific Integrated Circuit

ASIP Application Specific Interface Protector

B
B2B Board to board, connector between PWB and UI board

BB Baseband

BC02 Bluetooth module made by CSR

BIQUAD Bi-quadratic ,type of filter function)

BSI Battery Size Indicator

BT Bluetooth

C
CBus MCU controlled serial bus connected to UPP_WD2,UEME and Zocus

CCP Compact Camera Port

CDSP Cellular DSP (expected to run at low levels)

CLDC Connected limited device configuration

CMOS Complimentary metal-oxide semiconductor circuit (low power consumption)

COF Chip on Foil

COG Chip on Glass

CPU Central Processing Unit

CSR cambridge silicon radio

CSTN Color Super Twisted Nematic

CTSI Clock Timing Sleep and interrupt block of Tiku

CW   Continuous wave

D
D/A-converter   Digital-to-analouge converter

DAC Digital-to-analouge converter

DBI  Digital Battery Interface

DBus DSP controlled serial bus connected between UPP_WD2 and Helgo

DCT-4 Digital Core Technology

DMA  Direct memory access

DP    Data Package

DPLL Digital Phase Locked Loop

DSP Digital Signal Processor

DtoS Differential to Single ended

E
EDGE Enhanced data rates for global/GSM evaluation

EGSM Extended GSM

EM Energy management

EMC Electromagnetic compability

EMI Electromagnetic interference

ESD Electrostatic discharge

F
FCI Functional cover interface

FPS Flash Programming Tool

FR Full rate

FSTN Film compensated super twisted nematic

G
GND Ground, conductive mass

GPIB General-purpose interface bus

GPRS General Packet Radio Service

GSM Group Special Mobile/Global System for Mobile communication

H
HF Hands free

HFCM Handsfree Common

HS Handset

HSCSD High speed circuit switched data (data transmission connection faster than GSM)

HW Hardware

I
I/O Input/Output

IBAT Battery current

IC Integrated circuit

ICHAR Charger current

IF Interface

IHF Integrated hands free

IMEI International Mobile Equipment Identity

IR Infrared

IrDA Infrared Data Associasion

ISA Intelligent software architecture

J
JPEG/JPG Joint Photographic Experts Group

L
LCD Liquid Crystal Display

LDO Low Drop Out

LED Light-emitting diode

LPRF Low Power Radio Frequency 

M
MCU Micro Controller Unit (microprocessor) 

MCU Multiport control unit 

MIC, mic Microphone 

MIDP Mobile Information Device Profile 

MIN Mobile identification number 

MIPS Million instructions per second 

MMC Multimedia card 

MMS Multimedia messaging service 

N
NTC Negative temperature coefficient, temperature sensitive resistor used as a 

temperature sensor 

O
OMA Object management architechture 

OMAP Operations, maintenance, and administartion part 

Opamp Operational Amplifier 

P
PA Power amplifier 

PDA Pocket Data Application 

PDA Personal digital assistant 

PDRAM Program/Data RAM (on chip in Tiku) 

Phoenix Software tool of DCT4.x 

PIM Personal Information Management 

PLL Phase locked loop 

PM (Phone) Permanent memory 

PUP General Purpose IO (PIO), USARTS and Pulse Width Modulators 

PURX Power-up reset 

PWB Printed Wiring Board 

PWM Pulse width modulation 

R
RC-filter Resistance-Capacitance filter 

RF Radio Frequency 

RF PopPort TM Reduced function PopPortTM interface 

RFBUS Serial control Bus For RF 

RSK Right Soft Key 

RS-MMC Reduced size Multi Media Card 

RSSI Receiving signal strength indicator 

RST Reset Switch 

RTC Real Time Clock (provides date and time) 

RX Radio Receiver 

S
SARAM Single Access RAM 


SAW filter Surface Acoustic Wave filter 

SDRAM Synchronous Dynamic Random Access Memory 

SID Security ID

SIM Subscriber Identity Module 

SMPS Switched Mode Power Supply

SNR Signal-to-noice ratio 

SPR Standard Product requirements 

SRAM Static random access memory 

STI Serial Trace Interface

SW Software 

SWIM Subscriber/Wallet Identification Module

T
TCXO Temperature controlled Oscillator 

Tiku Finnish for Chip, Successor of the UPP, Official Tiku3G 

TX Radio Transmitter

U
UART Universal asynchronous receiver/transmitter

UEME Universal Energy Management chip (Enhanced version)

UEMEK See UEME 

UI User Interface 

UPP Universal Phone Processor

UPP_WD2Communicator version of DCT4 system ASIC

USB Universal Serial Bus


V
VBAT Battery voltage 

VCHAR Charger voltage 

VCO Voltage controlled oscillator 

VCTCXO Voltage Controlled Temperature Compensated Crystal Oscillator 

VCXO Voltage Controlled Crystal Oscillator

Vp-p Peak-to-peak voltage 

VSIM SIM voltage

W
WAP Wireless application protocol 

WD Watchdog

X
XHTML Extensible hypertext markup language


Z
Zocus Current sensor, (used to monitor the current flow to and from the battery)