User Guide

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 56 Internal microphone

Internal earpiece

Internal earpiece is used for the HandPortable (HP) call mode. A dynamic 5x11 mm earpiece capsule is

connected to Avilmas ASIC’s differential output EarP and EarN.

RM-412; RM-413

System Module and User Interface

Issue 1 COMPANY CONFIDENTIAL Page 6 –23