User Guide

Table of Contents
Introduction............................................................................................................................................................6–5
Phone description .............................................................................................................................................6–5
System module block diagram ........................................................................................................................6–6
Energy management..............................................................................................................................................6–7
Battery and charging ........................................................................................................................................6–7
Backup battery...................................................................................................................................................6–8
Normal and extreme voltages .........................................................................................................................6–8
Power key and system power-up....................................................................................................................6–8
Modes of operation...........................................................................................................................................6–8
Power distribution......................................................................................................................................... 6–10
Clocking scheme............................................................................................................................................. 6–10
Bluetooth ............................................................................................................................................................. 6–11
WLAN .................................................................................................................................................................... 6–12
FM radio................................................................................................................................................................ 6–13
USB........................................................................................................................................................................ 6–13
CBUS interface...................................................................................................................................................... 6–14
FBUS ...................................................................................................................................................................... 6–14
ECI interface ......................................................................................................................................................... 6–14
Charger interface................................................................................................................................................. 6–14
SIM interface ........................................................................................................................................................ 6–14
µSD card interface ............................................................................................................................................... 6–15
Camera ................................................................................................................................................................. 6–16
Camera characteristics................................................................................................................................... 6–16
User interface....................................................................................................................................................... 6–16
Display module............................................................................................................................................... 6–16
Keyboard ........................................................................................................................................................ 6–17
Backlight and illumination............................................................................................................................ 6–18
ASICs...................................................................................................................................................................... 6–19
RAPIDO ............................................................................................................................................................ 6–19
BETTY N2300 ................................................................................................................................................... 6–20
VILMA N2200................................................................................................................................................... 6–20
Device memories................................................................................................................................................. 6–21
Combo memory .............................................................................................................................................. 6–21
Audio concept...................................................................................................................................................... 6–21
Audio HW architecture................................................................................................................................... 6–21
Internal microphone...................................................................................................................................... 6–22
External microphone and earpiece .............................................................................................................. 6–22
Internal earpiece............................................................................................................................................ 6–23
Internal speakers............................................................................................................................................ 6–23
Vibra circuitry ................................................................................................................................................. 6–23
AV connector................................................................................................................................................... 6–24
Baseband technical specifications..................................................................................................................... 6–24
External interfaces ......................................................................................................................................... 6–24
SIM IF connections.......................................................................................................................................... 6–24
Charger connector and charging interface connections & electrical characteristics .............................. 6–25
Internal interfaces.......................................................................................................................................... 6–25
Back-up battery interface electrical characteristics.................................................................................... 6–26
RF description ...................................................................................................................................................... 6–27
Block diagram................................................................................................................................................. 6–27
Receiver (RX)................................................................................................................................................... 6–27
RM-437; RM-449; RM-450
System Module and User Interface
Issue 1 COMPANY CONFIDENTIAL Page 6 –3
Copyright © 2008 Nokia. All rights reserved.