User Guide

Figure 89 Audio block diagram
Internal microphone
The internal microphone is used for HandPortable (HP) and Internal HandsFree (IHF) call modes.
A digital MEMS microphone data and clock line are connected to Rapido ASIC while power supply is received
from Avilma.
Figure 90 Internal microphone circuitry
External microphone
Galvanic accessories are connected to the AV connector.
RM-176
Nokia Customer Care System Module and User Interface
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