Audio Concept - Nokia RM-364 Service Manual

RM-364
System Module Description

Audio concept

The functional core of the audio hardware is built around EM ASIC N2200 and RAP.
N2200 provides an interface for the trancducers. Integrated hands free (IHF) stereo speakers are driven by
D-class audio amplifiers.
There are three audio transducers:
• 1digital microphone
• 1 earpiece
• 1 IHF (internal handsfree) speaker
N2200 also provides an output for the vibra motor.
Figure 27 Audio block diagram
Internal audio
The internal audio components are used in these modes:
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