Nokia 6680 RM-36 Service Manual page 410

Nokia Customer Care
Battery connector and interface connections & electrical characteristics.....................................................9-37
Internal interfaces.................................................................................................................................................................9-37
Internal interfaces...........................................................................................................................................................9-37
UI module connector and IF connections................................................................................................................9-38
Keyboard interface electrical characteristics..........................................................................................................9-39
Display connector and interface connections.........................................................................................................9-39
Camera interface connections and electrical characteristics.............................................................................9-41
Front camera interface and electrical characteristics..........................................................................................9-43
Flash LED interface and electrical characteristics..................................................................................................9-45
Slider switch electrical characteristics......................................................................................................................9-45
Back-up battery interface connections and electrical characteristics.............................................................9-46
RF description...............................................................................................................................................................................9-46
Receiver.....................................................................................................................................................................................9-46
Introduction to receiver functionality.......................................................................................................................9-46
WCDMA receiver................................................................................................................................................................9-46
GSM receiver......................................................................................................................................................................9-47
Transmitter..............................................................................................................................................................................9-47
Introduction to transmitter functionality................................................................................................................9-47
WCDMA transmitter.........................................................................................................................................................9-47
GSM transmitter................................................................................................................................................................9-49
Frequency synthesizers........................................................................................................................................................9-52
Regulators................................................................................................................................................................................9-53
Frequency mappings..................................................................................................................................................................9-54
EGSM900 frequencies............................................................................................................................................................9-54
GSM1800 frequencies...........................................................................................................................................................9-55
GSM1900 frequencies...........................................................................................................................................................9-56
WCDMA Rx frequencies.........................................................................................................................................................9-57
WCDMA Tx frequencies.........................................................................................................................................................9-58
List of Tables
Table 16 Keymatrix......................................................................................................................................................................9-23
Table 17 ALS resistor values......................................................................................................................................................9-24
Table 18 Audio connector pin assignments.........................................................................................................................9-31
Table 19 Charging interface connections..............................................................................................................................9-36
Table 20 Charging IF electrical characteristics....................................................................................................................9-36
Table 21 Battery interface connections.................................................................................................................................9-37
Table 22 Battery IF electrical characteristics........................................................................................................................9-37
Table 23 User interface connections......................................................................................................................................9-38
Table 24 Display interface connections.................................................................................................................................9-40
Table 25 Camera interface connections................................................................................................................................9-41
Table 26 Camera CCP IF electrical characteristics...............................................................................................................9-42
Table 27 Camera supply voltage characteristics.................................................................................................................9-42
Table 28 Camera control IF electrical characteristics........................................................................................................9-42
Table 29 Front camera interface connections.....................................................................................................................9-43
Table 30 Front camera voltage levels from Helen point of view...................................................................................9-44
Table 31 Front camera voltage levels from camera module point of view...............................................................9-45
Table 32 Front camera supply voltage characteristics......................................................................................................9-45
Table 33 Flash LED interface connections.............................................................................................................................9-45
Table 34 Flash LED interface electrical characteristics .....................................................................................................9-45
Table 35 Back-up battery connections...................................................................................................................................9-46
Table 36 Back-up battery electrical characteristics...........................................................................................................9-46
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RM-36
System Module
Issue 1