User Guide

Figure 67 Internal microphone

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.

Figure 68 Internal earpiece circuitry

Internal speakers

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

music listening. Two dynamic 8x12mm 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 69 Internal speakers

Vibra circuitry

Vibra is used for the vibra alarm function.

The vibra motor is connected to the Avilma ASIC VibraP and VibraN Pulse Width Modulated (PWM) outputs.

RM-348; RM-349; RM-350

System Module and User Interface

Issue 2 COMPANY CONFIDENTIAL Page 8 –21