User Guide

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CCS Technical Documentation System Module LG4 and Grip Module LS4

Issue 2 11/02 ¤Nokia Corporation Page 3

Table of Contents

Page No

Abbreviations ................................................................................................................. 6

LG4 System Module ...................................................................................................... 8

IIntroduction ................................................................................................................8

Technical overview ........................................................................................................ 8

LG4 features ................................................................................................................8

Component placement and PWB outline .....................................................................8

Block diagram .............................................................................................................. 12

UI Interface ................................................................................................................12

Baseband Technical Summary..................................................................................... 13

Functional Description................................................................................................. 14

BB Description ..........................................................................................................14

Memory Configuration............................................................................................ 14

Energy Management ............................................................................................... 14

Modes of Operation ...................................................................................................15

Voltage limits .......................................................................................................... 15

Clocking Scheme .......................................................................................................16

UPP_WD2 voltage/clock frequency adjusting........................................................ 16

Power Distribution, Control and Reset ......................................................................17

Power-up sequence (Reset mode) ........................................................................... 18

Powering off............................................................................................................ 18

Controlled powering off .......................................................................................... 18

Uncontrolled powering off ...................................................................................... 18

Watchdogs............................................................................................................... 18

Charging .................................................................................................................. 19

Chargers .................................................................................................................. 19

Battery ..................................................................................................................... 19

Back-up battery and real time clock ..........................................................................20

Baseband Measurement A/D Converter ....................................................................20

NHL-2NA BB Features & HW interfaces ................................................................... 21

NHL-2NA BB User interface ....................................................................................21

UI-Module Interface................................................................................................ 21

Power Key ............................................................................................................... 21

Grip Interface .......................................................................................................... 21

Bluetooth ....................................................................................................................23

IR ...............................................................................................................................23

SIM Interface .............................................................................................................23

NHL-2NA Audio Concept .........................................................................................24

Earpiece................................................................................................................... 24

Microphone ............................................................................................................. 25

IHF Amplifier and Speaker ..................................................................................... 25

External Audio interface ......................................................................................... 26

Camera Interface ........................................................................................................26

Proximity Sensor .......................................................................................................27

Proximity Detector components ................................................................................28

Lightguides.............................................................................................................. 28

IRED........................................................................................................................ 28

Photodiode............................................................................................................... 28