User Guide

Figure 49 Internal speaker circuitry

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.

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

signal is multiplexed with a video output signal coming from the application processor ASIC side.

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.

Figure 50 External earpiece circuitry (system connector connected on the right)

RA-6

System Module

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