User Guide

NSM–5
UI section
PAMS Technical Documentation
Page 8
Issue 1 02/2002
 Nokia Corporation
XEARP
XEARN
10
10
33n
33n
HeadDet
HF
HFCM
100k
2.8 V
MIC1N
MIC1P
33n
33n
MIC3N
MIC3P
XMICP
MAD
AUXOUT
EAD
CCONT
Baseband
470R
COBBA
HookDet
33k
100k
100k
XMICN
100k
2.8 V
220k
33k
1k
10k
10k
PData(2)
2k2
2k2
100R
470R
100R
100R
CTIM
CHAPS
10k
10k
CCUT
Analog audio accessory detection
In XEARP signal there is a 100 k pullup and 33k pulldown in the trans-
ceiver for HeadDet. The HeadDet is pulled up when an accessory is con-
nected, and pulled down when disconnected. To get HeadDet work prop-
erly the system connector must be assembled otherwise the transceiver