User Guide

External signals and connections
Table 11 System connector
Signal From To Min Nom Max Condi-tion Note
XMICP HS/HF Mic Liteplu
s
2/60m
V diff
Analog
audio in
Headset Mic bias and
audio signal 2mV
nominal. HF Mic signal
60mV nominal.
Differential symmetric
input.
DC bias
2V2kohm
Accessory detection by
bias loading
XMICN 2/60m
V diff
Ana in / 1k
to GND
Hook interrupt by heavy
bias loading
XEARP HS/HF Liteplu
s
100 mV
diff
Ana in Quasi-differential DC-
coupled earpiece/HF
amplifier signal to
accessory. DC biased to
0.8V
XEARN EAR/
Amp.
INT
HEADINT
Switch Liteplu
s
0/2.7V Dig in HS interrupt from bottom
connector switch when
plug inserted.
VCHARIN Charger Liteplu
s
11.1Vp
eak
16.9
Vpeak
Standard Vch from Charger
Connector, max 20V
7.9
VRMS
1.0
Apeak
7.0
VRMS
8.4
VRMS
9.2
VRMS
Fast charger
850 mA
GND GND GND from/to Charger
connector
Battery connector
Table 12 Battery IF
Signal From To Min Nom Max Note
GND Global Batt (-) Global GND
VBAT Batt (+) 3.1 5.1 Battery Voltage
RM-392; RM-393
System Module
Page 6 –18 COMPANY CONFIDENTIAL Issue 1
Copyright © 2008 Nokia. All rights reserved.