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RM-240
System Module
Audio concept
Audio concept
The functional core of the audio hardware is built around two ASICs; Energy management ASICs N2200 and
N2300.
N2200 provides an interface for the trancducers and the AV connector.
There are four audio transducers:
• 1 earpiece
• 1 IHF speaker
• 1 digital microphone module
• 1 AV out connector
N2200 also provides an output for the vibra motor.
All external audio accessories are connected to the specific audio connector.
Figure 25 Audio block diagram
Internal audio
The internal audio components are used in these modes:
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