Internal Microphone - Nokia E62 Service Manual

RM-88
Nokia Customer Care System Module
Figure 59 Audio block diagram

Internal microphone

Internal microphone is used for HandPortable (HP) and Internal HandsFree (IHF) call modes.
An analogue electret microphone is connected to Retu ASIC's Mic1P and Mic1N is connected ground near Retu.
Figure 60 Internal microphone passive circuitry
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