User Guide

CC Technical Documentation System Module

RM-11

IrDa Interface

When using transceiver with 1.8V I/O, the IrDa interface is designed into the UPP. The IR

link supports speeds from 9600 bit/s to 1.152 MBit/s up to a distance of 80 cm.

Transmission over the IR is half-duplex.

The length of the transmitted IR pulse depends on the speed of the transmission. When

230.4 kbit/s or less is used as a transmission speed, pulse length is a maximum of

1.63ms. If the transmission speed is set to 1.152Mbit/s, the pulse length is 154ns.

The IR transceiver can be set into SIR or MIR modes. In SIR mode the transceiver is

capable of transmission speeds up to 115.2kbit/s. In MIR mode faster transmission speeds

are used. The maximum speed is 1.152Mbit/s. The IR transceiver can be set into shut-

down mode by setting the SD pin to logic '1' to save current.

Vibra

A vibra-alerting device is used to generate a vibration signal for an incoming call. Vibra

is located in the bottom end of the phone and a connection is done with spring contacts.

The vibra interface is the same as in other DCT4 projects. The vibra is controlled by a

PWM signal from the UEM. The frequency can be set to 64, 129, 258, or 520 Hz and the

duty cycle can vary between 3% - 97%. To ensure compatibility with different UEM

versions, the RM-11 uses 40.5% duty cycle of the vibra PWM signal.

FM Radio

FM radio circuitry is implemented by using a highly integrated radio IC (TEA5767).

TEA5767 is a single-chip, electronically tuned, FM stereo radio with fully integrated IF

selectivity and demodulation. The IF frequency is 225 kHz. The radio is completely

adjustment-free and only requires a minimum of small, low-cost, external components.

It has signal-dependent mono/stereo blend [Stereo Noise Cancelling (SNC)]. The radio

can tune the European, US, and Japan FM bands.

Channel tuning and other controls are controlled through a serial bus interface by the

MCUSW. The reference clock (32kHz) is generated by the UPP CTSI block (routed from the

sleep clock).

Figure 15: FM radio digital interface connections

UPP8M

TEA5767

FMClk

FMCtrlDa

FMCtrlClk

FMWrEn

VIO

W/R

SCL

SDA

XTAL2

GenIO(3)

GenIO(12)

GenIO(8)

GenIO(11)