User Guide

PAMS Technical Documentation System Module
NSB-5
Issue 1 03/01 Nokia Mobile Phones Ltd. Page 15
Figure 3: Combined headset, system connector audio signals
Battery Connector
The BSI contact on the battery connector is used to detect when thebattery is removed
with power switched on enabling the SIM card operation to shut down first. The BSI con-
tact in the battery pack should be shorter than the supply power contacts to give enough
time for the SIM shut down.
XEAR
SGND
47R
10m
100n
100n
HEADDET
HF
HFCM
47k
VBB
MIC1N
MIC1P
100n
100n
MIC3N
MIC3P
XMIC
220k
MAD
100n
HOOKDET
AUX
OUT
EAD
CCONT
2k2
27p
Note 1: Grey resistor are in the border of ”EMI clean” and ”dirty” areas.
Note 2: AGND is connected directly to the GND on PCB close to HF parts.
Note 3: ESD protection diodes are not shown.
Baseband
COBBA
–GJP
220k
LGND
+
+
+
R01
C01
C02
C03
L01
Z01
SW01
PC–Board
R01= 100R
C01=33uF
C02=1000pF
C03=22pF
L01=MMZ2012Y6
01BT/TDK
AGND
330R
27p
2k2
AGND AGND AGND
100n
AGND
PD2
AGND
1u
AGND
10u
AGND
27p
VBB VBB
10k
2k2
33R
2k2 47k
100MHz
100R
100R