User Guide

Table of Contents
Baseband description............................................................................................................................................8–5
System module block diagram........................................................................................................................8–5
Baseband functional description.....................................................................................................................8–5
Absolute maximum ratings..............................................................................................................................8–6
Phone modes of operation...............................................................................................................................8–6
Power distribution............................................................................................................................................8–7
Clocking scheme................................................................................................................................................8–8
Bluetooth...........................................................................................................................................................8–9
USB......................................................................................................................................................................8–9
WLAN..................................................................................................................................................................8–9
WLAN signals and interfaces..........................................................................................................................8–11
WLAN BB/MAC..................................................................................................................................................8–12
IrDA...................................................................................................................................................................8–12
SIM interface....................................................................................................................................................8–12
RS MMC interface.............................................................................................................................................8–13
Battery interface..............................................................................................................................................8–13
User interface..................................................................................................................................................8–14
Display interface.........................................................................................................................................8–14
Keyboard.....................................................................................................................................................8–14
Display and keyboard backlight...............................................................................................................8–14
ALS interface...............................................................................................................................................8–15
ASICs.................................................................................................................................................................8–16
RAP ASIC.......................................................................................................................................................8–16
EM ASIC N2200............................................................................................................................................8–16
EM ASIC N2300............................................................................................................................................8–16
Device memories.............................................................................................................................................8–16
RAP memories NOR flash and SDRAM.......................................................................................................8–16
Combo memory..........................................................................................................................................8–17
Audio concept.......................................................................................................................................................8–17
Audio HW architecture....................................................................................................................................8–17
Internal microphone.......................................................................................................................................8–18
External microphone.......................................................................................................................................8–19
Internal earpiece.............................................................................................................................................8–19
Internal speaker..............................................................................................................................................8–19
External earpiece.............................................................................................................................................8–20
Vibra circuitry..................................................................................................................................................8–20
Pop-portTM connector....................................................................................................................................8–21
Baseband technical specifications......................................................................................................................8–22
External interfaces..........................................................................................................................................8–22
SIM IF connections...........................................................................................................................................8–22
RS MMC interface connections........................................................................................................................8–23
Charger connector and charging interface connections & electrical characteristics...............................8–23
Battery connector and interface connections & electrical characteristics................................................8–24
Internal interfaces...........................................................................................................................................8–24
UI module connector and IF connections.....................................................................................................8–25
Keyboard interface electrical characteristics................................................................................................8–26
Display connector and interface connections..............................................................................................8–27
Back-up battery interface connections and electrical characteristics.......................................................8–28
RF description.......................................................................................................................................................8–29
Introduction to receiver functionality...........................................................................................................8–29
RM-49
System Module Nokia Customer Care
Issue 1 COMPANY CONFIDENTIAL Page 8 –3
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