User Guide

Internal earpiece

Internal earpiece is used for the HandPortable (HP) call mode. A dynamic 7x11 mm earpiece capsule is

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

Internal speakers

Internal speakers are used for Internal HandsFree (IHF) call mode, video call, ringing tones, FM radio and

music listening.

Two dynamic 11x15mm speakers are connected to Avilma ASIC’s outputs XearR/XearL via stereo D-class IHF

amplifier TPA2012D2. The amplifier has 24 dB fixed gain and it is put to shutdown mode when not in use.

Figure 56 Internal speaker circuitry

Vibra circuitry

Vibra is used for the vibra alarm function.

RM-244

System Module and User Interface

Page 6 –24 COMPANY CONFIDENTIAL Issue 1