User Guide

PAMS Technical Documentation System Module & UI
NHM-8NX
Issue 1 05/02 ãNokia Corporation Page 3
RF frequency plan ................................................................................................... 68
DC characteristics ................................................................................................... 68
Functional descriptions ..............................................................................................71
RF block diagram .................................................................................................... 71
Frequency synthesizers ........................................................................................... 71
Receiver................................................................................................................... 73
Transmitter .............................................................................................................. 75
Synthesizer and RF Control .................................................................................... 76
RF characteristics .......................................................................................................77
Channel numbers and frequencies........................................................................... 77
Main RF characteristics........................................................................................... 77
Transmitter characteristics ...................................................................................... 77
Receiver characteristics........................................................................................... 81
List of Figures
Page No
Fig 1 NHM-8NX baseband block diagram..........................................................................6
Fig 2 UEM charging circuitry..............................................................................................21
Fig 3 Shared LED driver circuit for LCD and Keyboard backlight ....................................29
Fig 4 Complete overview of LCD module ..........................................................................29
Fig 5 BW4 LCD module......................................................................................................30
Fig 6 BSI Detection .............................................................................................................31
Fig 7 UEM & UPP SIM connections...................................................................................32
Fig 8 Speaker Interface ........................................................................................................33
Fig 9 Internal microphone electrical interface .....................................................................34
Fig 10 Interface between the MIDI-circuit and the UEM....................................................35
Fig 11 Mechanical layout and interconnections of DCT-4 battery......................................36
Fig 12 Headset interface ......................................................................................................37
Fig 13 DC-OUT Interface....................................................................................................39
Fig 14 Keyboard layout .......................................................................................................40
Fig 15 Intel-AMD signal deviations description .................................................................45
Fig 16 An XOR comparison of the data indicates more equal bits .....................................46
Fig 17 An XOR comparison indicates more unequal bits ...................................................46
Fig 18 Intel Asynchronous Read .........................................................................................50
Fig 19 Intel Synchronous Four-Word Burst Read ...............................................................51
Fig 20 Intel Write.................................................................................................................52
Fig 21 AMD Asynchronous Read .......................................................................................53
Fig 22 AMD Synchronous Burst Read ................................................................................53
Fig 23 Production/Test/After sales interface .......................................................................60
Fig 24 RF Frequency plan ...................................................................................................68
Fig 25 Power distribution diagram ......................................................................................70
Fig 26 Block Schematic.......................................................................................................71
Fig 27 Simplified Synthesizer..............................................................................................73
Fig 28 Simplified Mjoelner BB, either I or Q channel ........................................................73
Fig 29 Gain control ..............................................................................................................74
Fig 30 DC compensation principle ......................................................................................75
Fig 31 Power Loop ..............................................................................................................76