External signals and connections
Table 11 System connector
Signal From To Min Nom Max Condi-tion Note
XMICP HS/HF Mic UEMC
Lite
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 UEMC
Lite
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 UEMC
Lite
0/2.7V Dig in HS interrupt from bottom
connector switch when
plug inserted.
VCHARIN Charger UEMC
Lite
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-340; RM-341
System Module
Page 6 –18 COMPANY CONFIDENTIAL Issue 1
Copyright © 2007 Nokia. All rights reserved.
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