User Guide

Issue 1 04/2005 COMPANY CONFIDENTIAL 3

RM-94

7 - System Module Nokia Customer Care

Table of Contents

Page No

Glossary of Terms............................................................................................... 5

Baseband............................................................................................................. 8

Block diagram .................................................................................................... 9

Frequencies in baseband................................................................................. 11

PWB................................................................................................................. 11

Characteristics of the PWB ............................................................................ 11

Key components ............................................................................................ 11

Technical Specifications .................................................................................. 13

Baseband core................................................................................................. 13

UPP ................................................................................................................ 13

UEMEK .......................................................................................................... 13

External SRAM and Flash .............................................................................. 14

Energy management........................................................................................ 14

Modes of operation ........................................................................................ 14

No Supply ...................................................................................................... 14

Backup ........................................................................................................... 14

Acting Dead ................................................................................................... 14

Active ............................................................................................................. 15

Sleep Mode .................................................................................................... 15

Charging ........................................................................................................ 15

Power distribution ............................................................................................ 15

DC characteristics............................................................................................ 16

Supply voltage ranges ................................................................................... 16

Baseband regulators ...................................................................................... 17

Function Groups ............................................................................................... 18

Battery.............................................................................................................. 18

Audio................................................................................................................ 18

Internal microphone ....................................................................................... 18

Internal speaker ............................................................................................. 19

IHF speaker ................................................................................................... 20

External audio ................................................................................................ 20

External microphone connection .................................................................... 20

Headset connections ..................................................................................... 20

Test possibilities ............................................................................................. 20

Vibra................................................................................................................. 20

Test possibility ............................................................................................... 21

LCD module..................................................................................................... 21

Characteristics ............................................................................................... 21

LCD connector ............................................................................................... 22

Test possibility ............................................................................................... 23

Keypad............................................................................................................. 24

Test possibility ............................................................................................... 24