Nokia RM-243 - Page 156

RF description ...................................................................................................................................................... 6–25
Block diagram................................................................................................................................................. 6–25
Receiver (RX)................................................................................................................................................... 6–25
Transmitter (TX) ............................................................................................................................................. 6–26
Frequency mappings........................................................................................................................................... 6–27
GSM850 frequencies....................................................................................................................................... 6–27
EGSM900 frequencies..................................................................................................................................... 6–27
GSM1800 frequencies..................................................................................................................................... 6–28
GSM1900 frequencies..................................................................................................................................... 6–30
WCDMA V (850) frequencies .......................................................................................................................... 6–31
WCDMA 2100 Rx frequencies......................................................................................................................... 6–32
WCDMA 2100 Tx frequencies ......................................................................................................................... 6–33
List of Tables
Table 14 Nominal voltages....................................................................................................................................6–8
Table 15 AV interface electrical characteristics................................................................................................ 6–22
Table 16 Charging interface connections ......................................................................................................... 6–24
Table 17 Charging IF electrical characteristics ................................................................................................. 6–24
Table 18 Back-up battery connections.............................................................................................................. 6–24
Table 19 Back-up battery electrical characteristics ......................................................................................... 6–25
List of Figures
Figure 35 Battery pin order...................................................................................................................................6–7
Figure 36 LYNX battery connector ........................................................................................................................6–7
Figure 37 Small (left) and wide (right) charger plugs ........................................................................................6–8
Figure 38 Clocking scheme................................................................................................................................. 6–11
Figure 39 Bluetooth interface............................................................................................................................ 6–12
Figure 40 FM interface ........................................................................................................................................ 6–12
Figure 41 SIM interface ....................................................................................................................................... 6–14
Figure 42 Camera flash and driver design ........................................................................................................ 6–16
Figure 43 Keyboard layout ................................................................................................................................. 6–17
Figure 44 Audio block diagram.......................................................................................................................... 6–19
Figure 45 Internal microphone circuitry........................................................................................................... 6–20
Figure 46 External earpiece and microphone circuitry (AV connected on the right) ................................... 6–20
Figure 47 Internal earpiece circuitry................................................................................................................. 6–21
Figure 48 Internal speaker circuitry .................................................................................................................. 6–21
Figure 49 External earpiece and microphone circuitry (AV connected on the right) ................................... 6–22
Figure 50 Vibra circuitry ..................................................................................................................................... 6–22
Figure 51 RF block diagram using RF ASIC N7505............................................................................................ 6–25
RM-243
System Module and User Interface
Page 6 –4 COMPANY CONFIDENTIAL Issue 1
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