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DSB75 Development Support Board Rev. B1 Hardware Description

Strictly confidential / Released

DSB75_hd_v08 Page 11 of 94 29.09.2005

1 Introduction

This document describes the

DSB75 Development Support Board

Rev. B1

The DSB75 Development Support Board is designed to assist system integrators in

developing and evaluating products based on Siemens GSM modules. Furthermore, it is part

of the Siemens reference equipment submitted for Type Approval GSM modules.

This document describes all interfaces of the DSB75, provides technical specifications and

presents guidelines for connecting and operating the GSM modules to be evaluated.

At present, the DSB75 has not been approved to comply with the CE marking regulations

and can be used for laboratory purposes only. Also, please note that the DSB75 and the

connected GSM module are not ESD protected. Because of these current limitations, take

care that the device is only used by authorized staff.

Note: The document is only valid for the DSB75 Rev. B1. DSB75 Rev. A2 boards are no

longer considered in the document.

1.1 Supported Products

DSB75 comes as a universal evaluation kit for variety of different Siemens GSM modules. At

present these are the following:

 MC75

 TC63

 TC65

The diversity of the supported products implies that, due to hardware or software specific

properties, major differences occur regarding the availability of interfaces and the

implementation of features. Therefore, please consult the specifications supplied with your

module, especially [1] and [2], to make sure whether or not a described interface, signal,

operating mode or function offered by the DSB75 is supported.

1.2 Related Documents

[1] Hardware Interface Description of your GSM module

[2] AT Command Set of your GSM module

[3] Application 07: Rechargeable Lithium Batteries in GSM Applications

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