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Table of Contents

Introduction............................................................................................................................................................6–5

Phone description .............................................................................................................................................6–5

Energy management..............................................................................................................................................6–6

Battery and charging ........................................................................................................................................6–6

Backup battery...................................................................................................................................................6–8

Normal and extreme voltages .........................................................................................................................6–8

Power key and system power-up....................................................................................................................6–9

Modes of operation...........................................................................................................................................6–9

Power distribution......................................................................................................................................... 6–10

Clocking scheme............................................................................................................................................. 6–10

Bluetooth ............................................................................................................................................................. 6–11

FM radio................................................................................................................................................................ 6–12

USB........................................................................................................................................................................ 6–13

CBUS interface...................................................................................................................................................... 6–13

FBUS ...................................................................................................................................................................... 6–13

ECI interface ......................................................................................................................................................... 6–13

Charger interface................................................................................................................................................. 6–13

SIM interface ........................................................................................................................................................ 6–13

µSD card interface ............................................................................................................................................... 6–14

Camera concept ................................................................................................................................................... 6–15

Cameras........................................................................................................................................................... 6–15

Main camera characteristics.......................................................................................................................... 6–15

Camera flash ................................................................................................................................................... 6–15

Secondary camera characteristics ................................................................................................................ 6–16

User interface....................................................................................................................................................... 6–16

Display module............................................................................................................................................... 6–16

Keyboard and other keys............................................................................................................................... 6–17

Display and keypad backlight ....................................................................................................................... 6–18

ASICs...................................................................................................................................................................... 6–18

RAP ASIC........................................................................................................................................................... 6–18

EM ASIC N2300 (Betty).................................................................................................................................... 6–18

EM ASIC N2200 (Avilma)................................................................................................................................. 6–18

Device memories................................................................................................................................................. 6–18

RAP memories NOR flash and SDRAM ........................................................................................................... 6–18

Combo memory .............................................................................................................................................. 6–19

Audio concept...................................................................................................................................................... 6–19

Audio HW architecture................................................................................................................................... 6–19

Internal microphone...................................................................................................................................... 6–19

External microphone...................................................................................................................................... 6–20

Internal earpiece............................................................................................................................................ 6–20

Internal speaker ............................................................................................................................................. 6–21

External earpiece............................................................................................................................................ 6–21

Vibra circuitry ................................................................................................................................................. 6–22

AV connector................................................................................................................................................... 6–22

Baseband technical specifications..................................................................................................................... 6–23

External interfaces ......................................................................................................................................... 6–23

SIM IF connections.......................................................................................................................................... 6–23

Charging interface connections & electrical characteristics ...................................................................... 6–24

Internal interfaces.......................................................................................................................................... 6–24

Back-up battery interface electrical characteristics.................................................................................... 6–24

RM-243

System Module and User Interface

Issue 1 COMPANY CONFIDENTIAL Page 6 –3