Table Of Contents - Nokia RH-27 Series Technical Documentation Manual

RH-27
System Module
Contents
Introduction.................................................................................................................... 4
BB Hardware Characteristics ......................................................................................4
Technical Summary .....................................................................................................4
Functional Description .................................................................................................5
Modes of Operation................................................................................................... 5
RH-27 BB Functional Blocks ......................................................................................6
UEM and UPP........................................................................................................... 7
Battery ....................................................................................................................... 7
Charger Detection ................................................................................................... 10
Charger Interface Protection ................................................................................... 10
LED Driver Circuit.................................................................................................. 11
LCD Display ........................................................................................................... 12
RF Interface Block .................................................................................................. 13
Combo Memory Module......................................................................................... 13
Combo Memory Interface ....................................................................................... 13
SRAM Memory Description ................................................................................... 13
Flash Memory Description...................................................................................... 13
Flash Architecture ................................................................................................... 14
Keyboard (UI Module)............................................................................................ 14
Keyboard ESD Protection ....................................................................................... 14
Internal Audio ......................................................................................................... 14
External Audio Connector....................................................................................... 16
External Microphone Connection ........................................................................... 17
External Earphone Connection................................................................................ 17
IrDa Interface .......................................................................................................... 18
Vibra........................................................................................................................ 18
FM Radio................................................................................................................. 18
System Connector (Tomahawk).............................................................................. 19
PWB Strategy ............................................................................................................20
PWB Construction................................................................................................... 20
PWB Immunity ....................................................................................................... 21
Keyboard ................................................................................................................. 21
Audio Lines ............................................................................................................. 21
Microphone Lines ................................................................................................... 21
EAR Lines ............................................................................................................... 22
Charger Lines .......................................................................................................... 22
HEADINT ............................................................................................................... 22
Battery Supply Filtering .......................................................................................... 22
System Connector ................................................................................................... 22
Mechanical Shielding.............................................................................................. 22
EMC Strategy ............................................................................................................22
Test Interfaces ............................................................................................................23
Production / After Sales Interface ........................................................................... 23
Flash Interface ......................................................................................................... 24
FBUS Interface........................................................................................................ 24
BB_RF Interface Connections ...................................................................................25
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