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Siemens TC35 Application

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Cellular Engine TC35
The extra compact module for voice and data transmission
Application Note:
Version:
Date:
Technical Support:
DocId:
Status:
Copyright © Siemens AG 2001
GSM Engine TC35
TC35-AN-01-V00.04
Application Note
SIM Interface
03.00
09.05.2001
wm.support@mch.siemens.de
TC35-AN-01-V03.00
Released
Released
1/9
Application Note SIM Interface
Version 03.00

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Summary of Contents for Siemens TC35

  • Page 1 The extra compact module for voice and data transmission SIM Interface Application Note: Version: 03.00 Date: 09.05.2001 Technical Support: wm.support@mch.siemens.de DocId: TC35-AN-01-V03.00 Status: Released Copyright © Siemens AG 2001 GSM Engine TC35 Released Application Note SIM Interface TC35-AN-01-V00.04 Version 03.00...

  • Page 2: Table Of Contents

    Siemens AG customers using or selling this product for use in such applications do so at their own risk and agree to fully indemnify Siemens for any damages resulting from illegal use or resale.

  • Page 3: Introduction

    The purpose of this document is to provide technical recommendations for integrating a SIM card interface into a TC35 based customer application. Specifications are subject to change without notice. This product is an original Siemens product protected by US, European and other patents.

  • Page 4: General

    ZIF connector of the TC35 module. This pin serves to sense mechanically whether a card is inserted into the SIM card holder. The default level of this pin on TC35 is low (internal pull down resistor, no card inserted) and...

  • Page 5: Sim Interface Schematic

    Application Note SIM Interface Schematic The following schematic is a sample configuration that illustrates how the SIM card holder of the DSB35 Support Box connects to the TC35 GSM engine. Note : • To ensure EMC compliance, only a maximum line length of 200 mm is permitted between the GSM engine and the SIM card holder.

  • Page 6: Ccin Signal For Sim Interface (Switch In Dsb35 Support Box)

    = 20mA external C ≥ 200nF to CCGND required CCGND Ground (0V) Usage is mandatory. Do not connect CCGND to GND of the application. See Chapter 7.1 for recommendations. GSM Engine TC35 Released Application Note SIM Interface TC35-AN-01-V00.04 Version 03.00...

  • Page 7: Electrostatic Discharge Protection

    24 - 29 SIM signals >4kV 15kV VDDLP >4kV 1.5kV >4kV 1.5kV SYNC >4kV 1.5kV 33 - 40 Audio >4kV 1.5kV Antenna HF signal >4kV 15kV Antenna HF GND >4kV 15kV GSM Engine TC35 Released Application Note SIM Interface TC35-AN-01-V00.04 Version 03.00...

  • Page 8: How To Connect The Sim Interface To Ground

    An example can be gathered from the figure below. Customer application TC35 CCGND CCGND SIM card reader CCGND Insulation Ground plane Figure 2: Connecting a separate ground for SIM interface GSM Engine TC35 Released Application Note SIM Interface TC35-AN-01-V00.04 Version 03.00...

  • Page 9: Sim Card Holder (X1201)

    Fax: +49(7066)9555 29 Fax: 630-969-1352 Email: mxgermany@molex.com URL: http://www.molex.com/ Far East North Headquarters Far East South Headquarters Yamato, Kanagawa, Japan Jurong, Singapore Phone:81-462-65-2324 Phone: 65-268-6868 Fax: 81-462-65-2366 Fax. 65-265-6044 GSM Engine TC35 Released Application Note SIM Interface TC35-AN-01-V00.04 Version 03.00...

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