Nokia N81 - Page 190

SIM IF connections.......................................................................................................................................... 6–39
Charger connector and charging interface connections & electrical characteristics .............................. 6–40
Internal interfaces.......................................................................................................................................... 6–40
Back-up battery interface electrical characteristics.................................................................................... 6–41
RF description ...................................................................................................................................................... 6–42
Block diagram................................................................................................................................................. 6–42
Receiver (RX)................................................................................................................................................... 6–42
Transmitter (TX) ............................................................................................................................................. 6–43
Frequency mappings........................................................................................................................................... 6–44
GSM850 frequencies....................................................................................................................................... 6–44
EGSM900 frequencies..................................................................................................................................... 6–44
GSM1800 frequencies..................................................................................................................................... 6–45
GSM1900 frequencies..................................................................................................................................... 6–47
WCDMA 2100 Rx frequencies......................................................................................................................... 6–48
WCDMA 2100 Tx frequencies ......................................................................................................................... 6–49
List of Tables
Table 7 Nominal voltages................................................................................................................................... 6–11
Table 8 General WLAN specifications ................................................................................................................ 6–17
Table 9 Display characteristics........................................................................................................................... 6–26
Table 10 AV interface electrical characteristics................................................................................................ 6–38
Table 11 Charging interface connections ......................................................................................................... 6–40
Table 12 Charging IF electrical characteristics ................................................................................................. 6–40
Table 13 Back-up battery connections.............................................................................................................. 6–41
Table 14 Back-up battery electrical characteristics ......................................................................................... 6–41
List of Figures
Figure 53 Battery pin order...................................................................................................................................6–9
Figure 54 Battery connector............................................................................................................................... 6–10
Figure 55 Small (right) and wide (left) charger plug....................................................................................... 6–10
Figure 56 Clocking scheme................................................................................................................................. 6–14
Figure 57 Bluetooth hardware block diagram................................................................................................. 6–15
Figure 58 SIM interface ....................................................................................................................................... 6–18
Figure 59 SD interface......................................................................................................................................... 6–19
Figure 60 Main camera image orientation ....................................................................................................... 6–20
Figure 61 Secondary camera mechanical outline ............................................................................................ 6–21
Figure 62 Flash LED.............................................................................................................................................. 6–22
Figure 63 Camera overview................................................................................................................................ 6–24
Figure 64 Display overview ................................................................................................................................ 6–25
Figure 65 Display mechanical outline ............................................................................................................... 6–26
Figure 66 ITUT and S60 keymat ......................................................................................................................... 6–27
Figure 67 S60 and Menue flex............................................................................................................................ 6–27
Figure 68 RM-179 key matrix ............................................................................................................................. 6–28
Figure 69 Illumination overivew ....................................................................................................................... 6–29
Figure 70 ITUT keyboard and side key backlight ............................................................................................. 6–30
Figure 71 High side driver schematic................................................................................................................ 6–31
Figure 72 Hall sensor connection ...................................................................................................................... 6–32
Figure 73 Internal microphone circuitry........................................................................................................... 6–34
Figure 74 MicBias circuitry.................................................................................................................................. 6–35
Figure 75 External mic circuitry ......................................................................................................................... 6–35
RM-179; RM-223
System Module and User Interface
Page 6 –4 COMPANY CONFIDENTIAL Issue 1
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