User Guide

Table of Contents
Baseband description............................................................................................................................................8–5
System module block diagram........................................................................................................................8–5
Baseband functional description.....................................................................................................................8–6
Absolute maximum ratings..............................................................................................................................8–7
Phone modes of operation...............................................................................................................................8–7
Power distribution............................................................................................................................................8–8
Bluetooth...........................................................................................................................................................8–8
USB......................................................................................................................................................................8–9
MR sensor...........................................................................................................................................................8–9
FM radio..............................................................................................................................................................8–9
Camera................................................................................................................................................................8–9
Backup battery...................................................................................................................................................8–9
CBUS interface..................................................................................................................................................8–10
FBUS..................................................................................................................................................................8–10
ACI interface.....................................................................................................................................................8–10
VOUT interface.................................................................................................................................................8–10
Charger interface.............................................................................................................................................8–10
MicroSD interface.............................................................................................................................................8–10
SIM/USIM...........................................................................................................................................................8–10
Battery interface..............................................................................................................................................8–11
User interface..................................................................................................................................................8–12
Main display................................................................................................................................................8–12
Cover display...............................................................................................................................................8–13
Keyboard.....................................................................................................................................................8–13
Backlights....................................................................................................................................................8–13
ASICs.................................................................................................................................................................8–14
RAP ASIC.......................................................................................................................................................8–14
EM ASIC (N2200)..........................................................................................................................................8–14
EM ASIC (N2300)..........................................................................................................................................8–14
Device memories.............................................................................................................................................8–14
RAPGSM memories NOR flash and SDRAM................................................................................................8–14
Audio concept.......................................................................................................................................................8–14
Audio HW architecture....................................................................................................................................8–14
Internal microphone.......................................................................................................................................8–15
External microphone.......................................................................................................................................8–15
Internal earpiece.............................................................................................................................................8–16
Internal speakers.............................................................................................................................................8–16
External earpiece.............................................................................................................................................8–16
Vibra circuitry..................................................................................................................................................8–17
Baseband technical specifications......................................................................................................................8–17
External interfaces..........................................................................................................................................8–17
Pop-portTM connector....................................................................................................................................8–18
VOUT electrical characteristics.......................................................................................................................8–19
USB/FBUS connections and electrical characteristics...................................................................................8–19
Audio signal electrical characteristics...........................................................................................................8–19
Charger connector and charging interface connections & electrical characteristics...............................8–20
Battery connector and interface connections & electrical characteristics................................................8–20
Internal interfaces...........................................................................................................................................8–21
Upper block connectors..................................................................................................................................8–21
Back-up battery interface connections and electrical characteristics.......................................................8–22
RM-198
System Module Nokia Customer Care
Issue 1 COMPANY CONFIDENTIAL Page 8 –3
Copyright © 2006 Nokia. All rights reserved.