User Guide

CCS Technical Documentation System Module and User Interface
Company confidential NPL-3
Issue 1 3/03 ãNokia Corporation. Page 29
FM Radio
The FM radio in the transceiver NPL-3 is a single chip electronically tuned FM stereo
radio with fully integrated IF selectivity and demodulation. The FM radio is completely
adjustment free.
It can be tuned the European, US and Japanese FM bands.
The channel tuning and bus data are controlled by UPP. A variable capacitance diode,
two coils and some resistors and capacitors are the external components for the FM
radio.
The audio frequency is fed via UEM to a headset of the phone. The FM radio antenna is
implemented in a cable of the headset.
Figure 6: FM radio
IR Module
The IR interface when using transceiver with 1.8V I/O is designed into the UPP. The IR
link supports speeds from 9600 bit/s to 1.152 MBit/s up to distance of 80 cm. Transmis-
sion over the IR if half-duplex.
SIM Interface
UEM contains the SIM interface logic level shifting. SIM interface can be programmed to
support 3V and 1.8V SIMs. SIM supply voltage is selected by a register in the UEM. It is
only allowed to change the SIM supply voltage when the SIM IF is powered down.
The SIM power up/down sequence is generated in the UEM. This means that the UEM
generates the RST signal to the SIM. Also the SIMCardDet signal is connected to UEM.
The card detection is taken from the BSI signal, which detects the removal of the battery.
The SIM interface is powered up when the SIMCardDet signal indicates "card in". This
UPP8M
TEA5767
FMClk
FMCtrlDa
FMCtrlClk
FMWrEn
VIO
W/R
SCL
SDA
XTAL2
GenIO(3)
GenIO(12)
GenIO(8)
GenIO(11)