There are three audio transducers:
• 1 dynamic earpiece
• 1 dynamic speaker
• 1 microphone module
Retu also provides an output for the vibra motor.
All external audio accessories are connected to the specific audio connector.
Figure 56 Audio block diagram
Internal audio
The internal audio components are used in these modes:
Hand portable (HP) mode Internal hands free (IHF) mode
Microphone X X
Earpiece X
Speaker X
RM-217; RM-222
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