User Guide

A/D-converter Analogue-to-digital converter
ACI Accessory Control Interface
ADC Analogue-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
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
CBus MCU controlled serial bus connected to UPP_WD2, UEME and Zocus
CCP Compact Camera Port
CDMA Code division multiple access
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
CSD Circuit-switched data
CSR Cambridge silicon radio
CSTN Colour Super Twisted Nematic
CTSI Clock Timing Sleep and interrupt block of Tiku
CW Continuous wave
D/A-converter Digital-to-analogue converter
DAC Digital-to-analogue converter
DBI Digital Battery Interface
DBus DSP controlled serial bus connected between UPP_WD2 and Helgo
DCT-4 Digital Core Technology
RM-429
Glossary
Issue 1 COMPANY CONFIDENTIAL Page Glossary–3
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