Specifications

TC35 / TC37 Hardware Interface Description
TC35_37_HD_02_V03.10 - Released Page 15 of 92 21.12.2001
2 Functions overview
TC35 and TC37 GSM engines operate in the GSM 900 MHz and GSM 1800 MHz frequency
bands. Designed to easily provide radio connection for voice and data transmission both
modules integrate seamlessly with a wide range of GSM application platforms and are
ideally suited to design and set up innovative cellular solutions with minimum effort.
The complete RF part is incorporated and the GSM protocol runs autonomously on a GSM
baseband processor. The GSM engine uses a single 40-pin ZIF connector that connects to
the cellular device application. The ZIF connector establishes the application interface for
control data, audio signals and power supply lines.
The cellular device application forms the Man-Machine Interface (MMI). Access to the GSM
engine is enabled by a serial interface (RS232).