User Guide

System Module LG4 and Grip Module LS4 CCS Technical Documentation
Page 4 ¤Nokia Corporation Issue 2 11/02
HW Implementation................................................................................................ 28
Ambient Light Sensor ................................................................................................30
Flashing ......................................................................................................................31
Connections to Baseband ........................................................................................ 31
Testing interfaces .......................................................................................................32
Extreme Voltages ......................................................................................................33
Temperature Conditions ............................................................................................33
Humidity and Water Resistance ................................................................................33
RF Module .................................................................................................................34
Functional block descriptions.................................................................................. 34
The Frequency synthesizer...................................................................................... 34
RF Frequency Plan .................................................................................................. 36
DC characteristics ................................................................................................... 37
Regulators................................................................................................................ 37
Power Distribution Diagram ................................................................................... 38
RF characteristics .................................................................................................... 39
RF Block Diagram .................................................................................................. 40
Voltage Supplies and References ..............................................................................41
Receiver .....................................................................................................................43
Transmitter .................................................................................................................44
AGC strategy........................................................................................................... 45
AFC function........................................................................................................... 47
DC-compensation.................................................................................................... 48
Power control with analog temperature compensation scheme .............................. 48
Grip Module................................................................................................................. 50
Abbreviations .............................................................................................................50
Introduction ................................................................................................................50
General Interface between Grip and Transceiver ......................................................53
Grip Keyboard ...........................................................................................................56
Electrical implementation ....................................................................................... 56
Unit limits................................................................................................................ 57
Vibra ..........................................................................................................................57
Electrical interface .....................................................................................................57
Current Gauge ............................................................................................................59
Interfacing the current gauge................................................................................... 59
Backlight ....................................................................................................................61
Electrical interface................................................................................................... 61
Hall Sensor and Magnet .............................................................................................62
Magnet..................................................................................................................... 62
DC Jack and Battery Connector ................................................................................63
Electrical interface................................................................................................... 63
Table of Schematic Diagrams
Page No
RF-BB connection diagram 1
Accessories interface diagaram 2
AEM diagram 3
Baseband Diagram 4
BB-RF Interface diagram 5