User Guide

Vibra circuitry

The vibra circuitry is used for the vibra-alarm function.

The vibra motor is connected to the EM ASIC (N2200) VibraP and VibraN Pulse Width Modulated (PWM) outputs.

Figure 101 Vibra circuitry

System connector

System connector provides a fully differential 4–wire stereo line-level output connection and fully differential

2-wire mono line-level or microphone level input connection.

The handsfree driver in EM ASIC (N2200) is meant for the headset.

The earpiece and headset signals are multiplexed so that the outputs cannot be used simultaneously.

Figure 102 External audio connector

Table 17 Audio connector pin assignments

Pin #/ Signal

name

Signal

description

Spectral range Voltage/

Current levels

Max or

nominal serial

impedance

Notes

1/ Charge V Charge DC 0-9V/ 0.85A

2/ GND Charge GND - 0.85A 100mΩ (PWB+

conn.)

3/ ACI ACI 1kbits/s Digital 0 / 47Ω Insertion &

removal

detection

2.5-2.78V

RM-10;RM-24

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