User Guide

Table of Contents
Introduction............................................................................................................................................................9–5
Phone description .............................................................................................................................................9–5
Energy management..............................................................................................................................................9–7
Battery and charging ........................................................................................................................................9–7
Backup battery...................................................................................................................................................9–8
Normal and extreme voltages .........................................................................................................................9–9
Power key and system power-up....................................................................................................................9–9
Modes of operation...........................................................................................................................................9–9
Power distribution......................................................................................................................................... 9–11
Clocking scheme............................................................................................................................................. 9–11
Bluetooth ............................................................................................................................................................. 9–12
FM radio................................................................................................................................................................ 9–13
USB........................................................................................................................................................................ 9–14
lrda interface ....................................................................................................................................................... 9–14
CBUS interface...................................................................................................................................................... 9–15
FBUS ...................................................................................................................................................................... 9–15
ECI interface ......................................................................................................................................................... 9–15
Charger interface................................................................................................................................................. 9–15
SIM interface ........................................................................................................................................................ 9–15
µSD card interface ............................................................................................................................................... 9–16
Camera concept ................................................................................................................................................... 9–17
Cameras........................................................................................................................................................... 9–17
Main camera characteristics.......................................................................................................................... 9–17
Camera flash ................................................................................................................................................... 9–17
Secondary camera characteristics ................................................................................................................ 9–18
User interface....................................................................................................................................................... 9–18
Display module............................................................................................................................................... 9–18
Keyboard and other keys............................................................................................................................... 9–19
Backlight and illumination............................................................................................................................ 9–21
MR sensor........................................................................................................................................................ 9–21
ASICs...................................................................................................................................................................... 9–22
RAP ASIC........................................................................................................................................................... 9–22
EM ASIC N2300 ................................................................................................................................................ 9–22
EM ASIC N2200 ................................................................................................................................................ 9–22
Device memories................................................................................................................................................. 9–23
RAP memories NOR flash and SDRAM ........................................................................................................... 9–23
Combo memory .............................................................................................................................................. 9–23
Audio concept...................................................................................................................................................... 9–23
Audio HW architecture................................................................................................................................... 9–23
Internal microphone...................................................................................................................................... 9–24
External microphone...................................................................................................................................... 9–24
Internal earpiece............................................................................................................................................ 9–25
Internal speakers............................................................................................................................................ 9–25
External earpiece............................................................................................................................................ 9–26
Vibra circuitry ................................................................................................................................................. 9–26
AV connector................................................................................................................................................... 9–27
Baseband technical specifications..................................................................................................................... 9–27
External interfaces ......................................................................................................................................... 9–27
SIM IF connections.......................................................................................................................................... 9–28
Charger connector and charging interface connections & electrical characteristics .............................. 9–28
RM-176
System Module and User Interface Nokia Customer Care
Issue 1 COMPANY CONFIDENTIAL Page 9 –3
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