User Guide

Name of Connection Connector reference
SIM X2701
Pop-port
TM
connector
Pop-Port
TM
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 earpiece and headset signals are multiplexed so that the outputs cannot be used simultaneously.
Figure 65 External audio connector
Table 14 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
4/ Vout DC out DC 2.78V 70 mA 100mΩ (PWB+
conn.)
200mW
2.5V 90mA
9 / XMIC N Audio in 300-8k 1Vpp &
2.5-2.78VDC
10 / XMIC P Audio in 300-8k 1Vpp &
2.5-2.78VDC
11 / HEAR N Audio out 20-20k 1Vpp 22Ω
12 / HEAR P Audio out 20-20k 1Vpp 22Ω
13 / HEAR R N Audio out 20-20k 1Vpp 22Ω Not conn. in
mono
RM-198
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