Internal Microphone - Nokia RM-509 Service Manual

RM-509; RM-510; RM-511
System Module
Internal audio
The internal audio components are used in these modes:
Microphone
Earpiece
Speaker

Internal microphone

The digital internal microphone (B2100) is located near the BB shield. To save current when the microphone
is not needed, its supply voltage is controlled by VDIGIMIC. The Data and Clk lines are directly connected to
RAP3Gv4.
Issue 2
Figure 45 Audio block diagram
Hand portable (HP) mode
X
X
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Internal hands free (IHF) mode
X
X
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