Siemens TC35i User Manual download pdf (Page 15)

TC35i Terminal Hardware Interface Description

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TC35i_T_HD_v01.05 Page 15/37 10.07.2003

3.3 The TC35i GSM engine

The TC35i GSM engine is a major functional component of the TC35i Terminal that handles

all the processing for audio, signal and data within a GSM cellular device. Internal software

runs the application interface and the whole GSM protocol stack. A UART forms the

interface to the Terminal Circuit.

A GSM baseband processor contains all analog and digital functionality of a cellular radio.

Designed to meet the increasing demands of the GSM/PCS cellular subscriber market, it

supports FR, HR and EFR speech and channel coding without the need for external

hardware.

The RF part of the GSM engine TC35i is based on a highly integrated single transceiver chip

solution.

The internal antenna cable connects to the connector type GSC from Murata with a 50!

impedance. This GSC connector is the ARP (Antenna Reference Point) for type approval

measurements as well as for electrical characteristics.

Figure 2: TC35i GSM engine

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