User Guide

RH-30/RH-31 Company Confidential
System Module Nokia Customer Care
Page 30 © 2004 Nokia Corporation. Issue 2 11/2004
FM radio
The FM radio in the transceiver RH-30/RH-31 is a single chip electronically tuned FM
stereo radio with fully integrated IF selectivity and demodulation. The FM radio is com-
pletely 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
UPP8M
TEA5767
FMClk
FMCtrlDa
FMCtrlClk
FMWrEn
VIO
W/R
SCL
SDA
XTAL2
GenIO(3)
GenIO(12)
GenIO(8)
GenIO(11)