Internal microphone
Internal microphone is used for Handportable (HP) and Internal Handsfree (IHF) call modes.
A digital MEMS-microphone is connected directly to Rapido via Data (MicData on Genio42) and CLK (AudioCLK).
Mic is powered by VSIM2.
Figure 73 Internal microphone circuitry
External microphone
Headsets provide external analog microphone via AV connector.
RM-179; RM-223
System Module and User Interface
Page 6 –34
COMPANY CONFIDENTIAL
Issue 1
Copyright © 2007 Nokia. All rights reserved.
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