User Guide

Figure 97 Internal microphone circuitry......................................................................................................... 10–23
Figure 98 External microphone circuitry (system connector connects to right side) ................................ 10–23
Figure 99 External earpiece circuitry (system connector connected on the right) .................................... 10–24
Figure 100 Switch for external earpiece......................................................................................................... 10–25
Figure 101 Internal handsfree speakers (upper block) ................................................................................. 10–26
Figure 102 Internal handsfree speaker amplifier circuitry ........................................................................... 10–26
Figure 103 External audio connector .............................................................................................................. 10–27
Figure 104 Charger connector.......................................................................................................................... 10–31
Figure 105 Battery connector .......................................................................................................................... 10–32
Figure 106 RF block diagram RM-100 using RF ASIC N7500.......................................................................... 10–40
Figure 107 RF frequency plan........................................................................................................................... 10–41
Figure 108 WCDMA receiver after duplexer, LNA and SAW filter................................................................... 10–42
Figure 109 GSM receiver after the antenna switch........................................................................................ 10–42
RM-100
System Module Nokia Customer Care
Issue 2 COMPANY CONFIDENTIAL Page 10 –5
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