User Guide

Figure 75 External microphone circuitry (Pop-Port™ connects to the right side)

Internal earpiece

Internal earpiece is used for the HandPortable (HP) call mode. A dynamic 8mm earpiece capsule is connected

to EM ASIC’s (N2200) differential output EarP and EarN.

Figure 76 Internal earpiece circuitry

Internal speaker

Internal speakers are used for Internal HandsFree (IHF) call mode, ringing tones and music listening.

A dynamic 11x15mm speaker is connected to EM ASIC's (N2200) HFSPP and HFSPN outputs.

External earpiece

All galvanic accessories are connected to the system connector.

The accessory audio mode is automatically enabled/disabled during connection/disconnection of dedicated

phone accessories.

EM ASIC (N2200) provides two output channels in either single-ended or differential format. EM ASIC (N2200)

outputs XearL and XearLC form the left channel audio output, and XearR and XearRC the right channel audio

output. XearLC and XearRC are the ground pins if the output works in a single-ended operation.

Xear lines have 22 Ω series resistors in each line.

In the system connector side, HSEAR P and HSEAR N form the left channel output, and HSEAR R P and HSEAR

R N the right channel output. Respectively, HSEAR N and HSEAR R N are the ground pins if the output works

in a single-ended operation.

Vibra circuitry

Vibra is used for vibra-alarm function.

RM-170; RM-171

System Module Nokia Customer Care

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