User Guide

Nokia Customer Care System Module
Company Confidential RH-21
Issue 2 07/2004  2004 Nokia Corporation. Page 25
4 TXIP UEM RFIC Out Ana 2.2Vpp max
diff.
0.6VppTyp
Bias 1.30V
Differential positive/nega-
tive in-phase Tx Signal
5TXIN
6 TXQP Differential positive/nega-
tive quadrature phase Tx
Signal
7TXQN
9 VREFRFO1 UEM RFIC Out Vref 1.35V RF IC Reference voltage
from UEM
HP INTERNAL AUDIO
AUDIO(4:0) HP Internal analog ear & microphone IF between UEM and Mic/Ear circuitry
0 EARP UEM Ear-
piece
Out Ana 1.25V Audio Differential signal to HP
internal Earpiece.
Load resistance 32 ohm.
1EARN
2 MIC1N Mic UEM In Ana 100mVpp
max diff.
Audio Differential signal from HP
internal MIC, 2mV nominal
3MIC1P
4 MICB1 Mic UEM Out V bias 2.1V typ./
<600 uA
DC Bias Bias voltage for internal
MIC
EXTERNAL AUDIO INTERFACE
XAUDIO(9:0)* External Audio IF between UEM and X-audio circuitry
0 HEADINT SysCo
n/
HSet
UEM In Dig 0/2.7V Input for Headset Connector
HeadInt Switch
1 HF UEM SysCo
n/
HSet
Out Ana 1.0Vpp
bias 0.8V
Audio External Earpiece Audio Sig-
nal
Reference output for DC
coupled external Earpiece
2 HFCM Ana 0.8 Vdc
3 MICB2 UEM SysCo
n/
HSet
Out V bias 2.1V typ/
600 uA
Bias voltage for external
MIC
4MIC2P
MIC2N
SysCo
n/
Head-
set
UEM In Ana 200mVpp
max diff
Audio Differential signal from
external MIC
5
6 HOOKINT Sys
Con
UEM In Ana/
Dig
0...2.7V DC HS Button interrupt, Exter-
nal Audio Accessory Detect
(EAD)
CHARGER INTERFACE
CHARGER lines, no bus*
RIP
Signal
name
Connected
from - to
UEM I/O
Signal Properties
A/D Levels-Freq./
Timing resolution
Description / Notes