User Guide

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.
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.
Because of stereo IHF solution a separate analog switch, N2100, is needed to switch external earpiece lines
off when needed.
Figure 99 External earpiece circuitry (system connector connected on the right)
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