Figure 76 Audio system block
Internal microphone
The internal microphone is used for HandPortable (HP) and Internal HandsFree (IHF) call modes. A digital
MEMS microphone data and clock line are connected to Rapidoyawe and operating voltage is received from
Avilma.
Figure 77 Internal microphone
Internal earpiece
Internal earpiece is used for the HandPortable (HP) call mode. A dynamic 8x12 mm earpiece capsule is
Connected to Avilma ASIC’s differential output EarP and EarN.
RM-484; RM-485; RM-486
System Module and User Interface
Page 8 –26 COMPANY CONFIDENTIAL Issue 1
Copyright © 2009 Nokia. All rights reserved.
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