Fm Radio; Ir Module; Backup Battery; Sim Interface - Nokia NPM-6 Series Manual

System Module and User Interface

FM Radio

FM radio circuitry is implemented using the integrated radio IC, TEA5767. Only a few
external components like filters, discriminator and capacitors are needed.
TEA5767 is an integrated AM/FM stereo radio circuit including digital tuning and control
functions. NPM-6 radio is implemented as FM stereo receiver.
UEM
Audio Am p.
H SEA RN
H SEA RP
H SEA RRN
H SEA RRP
Antenna
connection

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.

Backup Battery

Backup battery is used in case when main battery is either removed or discharged.
Backup battery is used for keeping real-time clock running for minimum of 30 minutes.
Rechargeable backup battery is connected between UEM VBACK and GND. In UEM
backup battery charging high limit is set to 3.2V. The cut–off limit voltage (V BUCoff–)
for backup battery is 2.0V. Backup battery charging is controlled by MCU by writing into
UEM register.
Li-Ion SMD battery type is used. The nominal capacity of the battery is 0.01 mAh.

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
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Figure 5: FM radio
VDIG
Vflash2 VCC
M ic3P VCCV CO
Lin VAFL
Rin VAFR
ãNokia Corporation.
CCS Technical Documentation
FM R adio
FM Clk
Xtal2
FM CtrlDa
SD A
FM CtrlClk
SCL
FM W rEn
RF W /R
RFI
IN
N2
1
U PP8M v2.X
Genio(3)
Genio(12)
Genio(11)
Genio(8)
Issue 1 01/03