Siemens XT65,XT75 Hardware Overview

XT65/XT75 Siemens Cellular Engine

Version: 00.130 DocId: XT65_XT75_HO_v00.130

Supported Products: XT65, XT75

Hardware Interface Overview

XT65/XT75 Hardware Interfa ce Overview

XT65_XT75_HO_v00.130 Page 2 of 58 2006-10-12 Confidential / Preliminary

General Notes

Product is deemed accepted by Recipient and is provided without interface to Recipient´s products. The Product constitutes pre-release version and code and may be changed substantially before commercial release. The Product is provided on an “as is” basis only and may contain deficiencies or inadequacies. The Product is provided without warranty of any kind, express or implied. To the maximum extent permitted by applicable law, Siemens further disclaims all warranties, including without limitation any implied warranties of merchantability, fitness for a particular purpose and noninfringement of third-party rights. The entire risk arising out of the use or performance of the Product and documentation remains with Recipient. This Product is not intended for use in life support appliances, devices or systems where a malfunction of the product can reasonably be expected to result in personal injury. Applications incorporating the described product must be designed to be in accordance with the technical specifications provided in these guidelines. Failure to comply with any of the required procedures can result in malfunctions or serious discrepancies in results. Furthermore, all safety instructions regarding the use of mobile technical systems, including GSM products, which also apply to cellular phones must be followed. Siemens AG customers using or selling this product for use in any applications do so at their own risk and agree to fully indemnify Siemens for any damages resulting from illegal use or resale. To the maximum extent permitted by applicable law, in no event shall Siemens or its suppliers be liable for any consequential, incidental, direct, indirect, punitive or other damages whatsoever (including, without limitation, damages for loss of business profits, business interruption, loss of business information or data, or other pecuniary loss) arising out the use of or inability to use the Product, even if Siemens has been advised of the possibility of such damages. Subject to change without notice at any time.

Transmittal, reproduction, dissemination and/or editing of this document as well as utilization of its contents and communication thereof to others without express authorization are prohibited. Offenders will be held liable for payment of damages. All rights created by patent grant or registration of a utility model or design patent are reserved.

Document Name:

XT65/XT75 Hardware Interface Overview

Version:

00.130

Date:

2006-10-12

DocId:

XT65_XT75_HO_v00.130

Status

Confidential / Preliminary

Supported Products:

XT65, XT75

XT65/XT75 Hardware Interfa ce Overview

Contents

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Contents

1 Introduction.............................................................................................................................................. 6

1.1 Related Documents......................................................................................................................... 6

1.2 Terms and Abbreviations ................................................................................................................ 7

1.3 Regulatory and Type Approval Information................................................................................... 10

1.3.1 Directives and Standards............................................................................................... 10

1.3.2 SAR requirements specific to portable mobiles ............................................................. 11

1.3.3 SELV Requirements ...................................................................................................... 12

1.3.4 Safety Precautions.........................................................................................................12

2 Product Concept.... ....... ...... ....... ...... ....... ...... ....... ...... ....... ............................................. ........................14

2.1 Key Features at a Glance.............................................................................................................. 14

3 Application Interface .............................................................................................................................18

3.1 Operating Modes........................................................................................................................... 19

4 GSM Antenna Interface......................................................................................................................... 20

4.1 Antenna Installation....................................................................................................................... 20

4.2 Antenna Pad.................................................................................................................................. 21

4.2.1 Suitable Cable Types..................................................................................................... 22

4.3 Antenna Connector ....................................................................................................................... 23

5 GPS Antenna Interface.......................................................................................................................... 27

5.1 Antenna Installation....................................................................................................................... 27

5.2 GPS Antenna ................................................................................................................................ 28

6 Electrical, Reliability and Radio Characteristics ................................................................................ 29

6.1 Absolute Maximum Ratings........................................................................................................... 29

6.2 Operating Temperatures ............................................................................................................... 30

6.3 Storage Conditions........................................................................................................................ 31

6.4 Reliability Characteristics .............................................................................................................. 32

6.5 Pin Assignment and Signal Description ........................................................................................33

6.6 Power Supply Ratings ................................................................................................................... 43

7 Mechanics .............................................................................................................................................. 44

7.1 Mechanical Dimensions of XT65/XT75 ......................................................................................... 44

7.2 Mounting XT65/XT75 to the Application Platform ......................................................................... 46

7.3 Board-to-Board Application Connector.......................................................................................... 47

8 Reference Approval............................................. ...... ....... ...... ...... ....... ...... ............................................ 51

8.1 Reference Equipment for Type Approval ...................................................................................... 51

8.2 Compliance with FCC Rules and Regulations .............................................................................. 52

9 Appendix ................................................................................................................................................53

9.1 List of Parts and Accessories ........................................................................................................ 53

9.2 Fasteners and Fixings for Electronic Equipment........................................................................... 55

9.2.1 Fasteners from German Supplier ETTINGER GmbH .................................................... 55

XT65/XT75 Hardware Interfa ce Overview

List of Tables

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Tables

Table 1: Directives .................................................................................................................................... 10

Table 2: Standards of North American type approval ...............................................................................10

Table 3: Standards of European type approval ........................................................................................ 10

Table 4: Requirements of quality .............................................................................................................. 11

Table 5: Overview of operating modes ..................................................................................................... 19

Table 6: Return loss in the active band .................................................................................................... 20

Table 7: Product specifications of U.FL-R-SMT connector....................................................................... 23

Table 8: Material and finish of U.FL-R-SMT connector and recommended plugs .................................... 24

Table 9: Ordering information for Hirose U.FL Series .............................................................................. 26

Table 10: GPS antenna: Active versus Passive ......................................................................................... 28

Table 11: Absolute maximum ratings ......................................................................................................... 29

Table 12: Board temperature...................................................................................................................... 30

Table 13: Ambient temperature according to IEC 60068-2 (without forced air circulation) ........................ 30

Table 14: Charging temperature ................................................................................................................. 30

Table 15: Storage conditions ...................................................................................................................... 31

Table 16: Summary of reliability test conditions ......................................................................................... 32

Table 17: Signal description ....................................................................................................................... 34

Table 18: Power supply ratings .................................................................................................................. 43

Table 19: Technical specifications of Molex board-to-board connector...................................................... 47

Table 20: List of parts and accessories ...................................................................................................... 53

Table 21: Molex sales contacts (subject to change)................................................................................... 54

Table 22: Hirose sales contacts (subject to change) .................................................................................. 54

XT65/XT75 Hardware Interfa ce Overview

List of Figures

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Figures

Figure 1: GSM antenna connector placement ........................................................................................... 20

Figure 2: Figure 41: Restricted area around antenna pad ......................................................................... 21

Figure 3: GSM antenna pad placement ..................................................................................................... 22

Figure 4: Mechanical dimensions of U.FL-R-SMT connector .................................................................... 23

Figure 5: U.FL-R-SMT connector with U.FL-LP-040 plug .......................................................................... 24

Figure 6: U.FL-R-SMT connector with U.FL-LP-066 plug .......................................................................... 24

Figure 7: Specifications of U.FL-LP-(V)-040(01) plug................................................................................ 25

Figure 8: GPS antenna connector placement............................................................................................ 27

Figure 9: GPS antenna pad placement...................................................................................................... 27

Figure 10: Pin assignment (component side of XT65/XT75) ....................................................................... 33

Figure 11: XT65/XT75– top view ................................................................................................................. 44

Figure 12: Dimensions of XT65/XT75 (all dimensions in mm) ..................................................................... 45

Figure 13: Mating board-to-board connector 53748-0808 on application .................................................... 48

Figure 14: Molex board-to-board connector 52991-0808 on XT65/XT75 .................................................... 49

Figure 15: Mating board-to-board connector 53748-0808 on application .................................................... 50

Figure 16: Reference equipment for Type Approval .................................................................................... 51

XT65/XT75 Hardware Interfa ce Overview

1 Introduction

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1 Introduction

This document applies to the following Siemens products:

• XT65 Module

• XT75 Module

The document describes the hardware of the XT65 and XT75 modules, both designed to connect to a cellular device application and the air interface. It helps you quickly retrieve interface specifications, electrical and mechanical details and information on the requirements to be considered for integrating further components.

The difference between both modules is that the XT75 additionally features EGPRS. Please note that except for EGPRS specific statements, all information provided below applies to both module types.

Throughout the document, both modules are generally referred to as XT65/XT75.

1.1 Related Documents

[1] XT65 AT Command Set 00.130

XT75 AT Command Set 00.130

[2] XT65/XT75 Release Notes 00.130 [3] DSB75 Support Box - Evaluation Kit for Siemens Cellular Engines [4] Application Note 02: Audio Interface Design for GSM Applications [5] Application Note 07: Rechargeable Lithium Batteries in GSM Applications [6] Application Note 16: Upgrading Firmware [7] Application Note 17: Over-The-Air Firmware Update [8] Application Note 22: Using TTY / CTM Equipment

[9] Application Note 24: Application Developer’s Guide [10] Application Note 26: Power Supply Design for GSM Applications [11] Application Note 32: Integrating USB into GSM Applications [12] Multiplexer User's Guide [13] Multiplex Driver Developer’s Guide for Windows 2000 and Windows XP [14] Multiplex Driver Installation Guide for Windows 2000 and Windows XP [15] Remote SAT User's Guide [16] Java User’s Guide [17] Java doc \wtk\doc\html\index.html

XT65/XT75 Hardware Interfa ce Overview

1.2 Terms and Abbreviations

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1.2 Terms and Abbreviations

Abbreviation Description

ADC Analog-to-Digital Converter

AGC Automatic Gain Control

ANSI American National Standards Institute

ARFCN Absolute Radio Frequency Channel Number

ARP Antenna Reference Point

ASC0 Asynchronous Controller. Abbreviations used for the serial interface of XT65/XT75

B Thermistor Constant

B2B Board-to-board connector

BER Bit Error Rate

BTS Base Transceiver Station

CB or CBM Cell Broadcast Message

CE Conformité Européene (European Conformity)

CHAP Challenge Handshake Authentication Protocol

CPU Central Processing Unit

CS Coding Scheme

CSD Circuit Switched Data

CTS Clear to Send

DAC Digital-to-Analog Converter

DAI Digital Audio Interface

dBm0 Digital level, 3.14dBm0 corresponds to full scale, see ITU G.711, A-law

DCE Data Communication Equipment (typically modems, e.g. Siemens GSM engine)

DCS 1800 Digital Cellular System, also referred to as PCN

DRX Discontinuous Reception

DSB Development Support Box

DSP Digital Signal Processor

DSR Data Set Ready

DTE Data Terminal Equipment (typically computer, terminal, printer or, for example, GSM applica-

tion)

DTR Data Terminal Ready

DTX Discontinuous Transmission

EFR Enhanced Full Rate

EGSM Enhanced GSM

EIRP Equivalent Isotropic Radiated Power

EMC Electromagnetic Compatibility

ERP Effective Radiated Power

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1.2 Terms and Abbreviations

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ESD Electrostatic Discharge

ETS European Telecommunication Standard

FCC Federal Communications Commission (U.S.)

FDMA Frequency Division Multiple Access

FR Full Rate

GMSK Gaussian Minimum Shift Keying

GPIO General Purpose Input/Output

GPRS General Packet Radio Service

GSM Global Standard for Mobile Communications

HiZ High Impedance

HR Half Rate

I/O Input/Output

IC Integrated Circuit

IMEI International Mobile Equipment Identity

ISO International Standards Organization

ITU International Telecommunications Union

kbps kbits per second

LED Light Emitting Diode

Li-Ion / Li+ Lithium-Ion

Li battery Rechargeable Lithium Ion or Lithium Polymer battery

Mbps Mbits per second

MMI Man Machine Interface

MO Mobile Originated

MS Mobile Station (GSM engine), also referred to as TE

MSISDN Mobile Station International ISDN number

MT Mobile Terminated

NTC Negative Temperature Coefficient

OEM Original Equipment Manufacturer

PA Power Amplifier

PAP Password Authentication Protocol

PBCCH Packet Switched Broadcast Control Channel

PCB Printed Circuit Board

PCL Power Control Level

PCM Pulse Code Modulation

PCN Personal Communications Network, also referred to as DCS 1800

PCS Personal Communication System, also referred to as GSM 1900

PDU Protocol Data Unit

Abbreviation Description

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1.2 Terms and Abbreviations

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PLL Phase Locked Loop

PPP Point-to-point protocol

PSK Phase Shift Keying

PSU Power Supply Unit

R&TTE Radio and Telecommunication Terminal Equipment

RAM Random Access Memory

RF Radio Frequency

RMS Root Mean Square (value)

ROM Read-only Memory

RTC Real Time Clock

RTS Request to Send

Rx Receive Direction

SAR Specific Absorption Rate

SELV Safety Extra Low Voltage

SIM Subscriber Identification Module

SMS Short Message Service

SPI Serial Peripheral Interface

SRAM Static Random Access Memory

TA Terminal adapter (e.g. GSM engine)

TDMA Time Division Multiple Access

TE Terminal Equipment, also referred to as DTE

Tx Transmit Direction

UART Universal asynchronous receiver-transmitter

URC Unsolicited Result Code

USB Universal Serial Bus

USSD Unstructured Supplementary Service Data

VSWR Voltage Standing Wave Ratio

Phonebook abbreviations

FD SIM fixdialing phonebook

LD SIM last dialing phonebook (list of numbers most recently dialed)

MC Mobile Equipment list of unanswered MT calls (missed calls)

ME Mobile Equipment phonebook

ON Own numbers (MSISDNs) stored on SIM or ME

RC Mobile Equipment list of received calls

SM SIM phonebook

Abbreviation Description

XT65/XT75 Hardware Interfa ce Overview

1.3 Regulatory and Type Approval Information

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1.3 Regulatory and Type Approval Information

1.3.1 Directives and Standards

XT65/XT75 is designed to comply with the directives and standards listed below. Please note that the product is still in a pre-release state and, therefore, type approval and testing procedures have not yet been completed.

It is the responsibility of the application manufacturer to ensure compliance of the final product with all provisions of the applicable directives and standards as well as with the technical specifications provided in the "XT65/XT75 Hardware Interface Description".

Manufacturers of applications which can be used in the US shall ensure that their applications have a PTCRB approval. For this purpose they can refer to the PTCRB approval of the respective module.

Table 1: Directives

99/05/EC Directive of the European Parliament and of the council of 9 March 1999 on radio

equipment and telecommunications terminal equipment and the mutual recognition of their conformity (in short referred to as R&TTE Directive 1999/5/EC).

The product is labeled with the CE conformity mark

89/336/EC Directive on electromagnetic compatibility

73/23/EC Directive on electrical equipment designed for use within certain voltage limits (Low

Voltage Directive)

95/94/EC Automotive EMC directive

2002/95/EC Directive of the European Parliament and of the Council of 27 Jan-

uary 2003 on the restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS)

Table 2: Standards of North American type approval

CFR Title 47 Code of Federal Regulations, Part 22 and Part 24 (Telecommunications, PCS); US

Equipment Authorization FCC

UL 60 950 Product Safety Certification (Safety requirements)

NAPRD.03 V3.6.1 Overview of PCS Type certification review board Mobile Equipment Type Certifica-

tion and IMEI control

PCS Type Certification Review board (PTCRB)

RSS133 (Issue2) Canadian Standard

Table 3: Standards of European type approval

3GPP TS 51.010-1 Digital cellular telecommunications system (Phase 2); Mobile Station (MS) con-

formance specification

ETSI EN 301 511 V9.0.2 Candidate Harmonized European Standard (Telecommunications series) Global

System for Mobile communications (GSM); Harmonized standard for mobile stations in the GSM 900 and DCS 1800 bands covering essential requirements under article 3.2 of the R&TTE directive (1999/5/EC) (GSM 13.11 version 7.0.1 Release

1998)

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1.3 Regulatory and Type Approval Information

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1.3.2 SAR requirements specific to portable mobiles

Mobile phones, PDAs or other portable transmitters and receivers incorporating a GSM module must be in accordance with the guidelines for human exposure to radio frequency energy. This requires the Specific Absorption Rate (SAR) of portable XT65/XT75 based applications to be evaluated and approved for compliance with national and/or international regulations.

Since the SAR value varies significantly with the individual product design manufacturers are advised to submit their product for approval if designed for portable use. For European and US markets the relevant directives are mentioned below. It is the responsibility of the manufacturer of the final product to verify whether or not further standards, recommendations or directives are in force outside these areas.

Products intended for sale on US marke ts

ES 59005/ANSI C95.1 Considerations for evaluation of human exposure to Electromagnetic Fields (EMFs)

from Mobile Telecommunication Equipment (MTE) in the frequency range 30MHz - 6GHz

Products intended for sale on Europ ean mar k ets

EN 50360 Product standard to demonstrate the compliance of mobile phones with the basic

restrictions related to human exposure to electromagnetic fields (300MHz - 3GHz)

IMPORTANT:

Manufacturers of portable applications based on XT65/XT75 modules are required to have their final product certified and apply for their own FCC Grant and Industry Canada Certificate related to the specific portable mobile. See also Section 8.2.

GCF-CC V3.21.0 Global Certification Forum - Certification Criteria

ETSI EN 301 489-1

V1.4.1

ETSI EN 301 489-7

V1.2.1 (2000-09)

Candidate Harmonized European Standard (Telecommunications series) Electro Magnetic Compatibility and Radio spectrum Matters (ERM); Electro Magnetic Compatibility (EMC) standard for radio equipment and services; Part 7: Specific conditions for mobile and portable radio and ancillary equipment of digital cellular radio telecommunications systems (GSM and DCS)

IEC/EN 60950-1 (2001) Safety of information technology equipment (2000)

Table 4: Requirements of quality

IEC 60068 Environmental testing

DIN EN 60529 IP codes

Table 3: Standards of European type approval

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1.3 Regulatory and Type Approval Information

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1.3.3 SELV Requirements

The power supply connected to the XT65/XT75 module shall be in compliance with the SELV requirements defined in EN 60950-1. See also Section 6.1 for further detail.

1.3.4 Safety Precautions

The following safety precautions must be observed during all phases of the operation, usage, service or repair of any cellular terminal or mobile incorporating XT65/XT75. Manufacturers of the cellular terminal are advised to convey the following safety information to users and operating personnel and to incorporate these guidelines into all manuals supplied with the product. Failure to comply with these precautions violates safety standards of design, manufacture and intended use of the product. Siemens AG assumes no liability for customer’s failure to comply with these precautions.

When in a hospital or other health care facility, observe the restrictions on the use of mobiles. Switch the cellular terminal or mobile off, if instructed to do so by the guidelines posted in sensitive areas. Medical equipment may be sensitive to RF energy.

The operation of cardiac pacemakers, other implanted medical equipment and hearing aids can be affected by interference from cellular terminals or mobiles placed close to the device. If in doubt about potential danger, contact the physician or the manufacturer of the device to verify that the equipment is properly shielded. Pacemaker patients are advised to keep their hand-held mobile away from the pacemaker, while it is on.

Switch off the cellular terminal or mobile before boarding an aircraft. Make sure it cannot be switched on inadvertently. The operation of wireless appliances in an aircraft is forbidden to prevent interference with communications systems. Failure to observe these instructions may lead to the suspension or denial of cellular services to the offender, legal action, or both.

Do not operate the cellular terminal or mobile in the presence of flammable gases or fumes. Switch off the cellular terminal when you are near petrol stations, fuel depots, chemical plants or where blasting operations are in progress. Operation of any electrical equipment in potentially explosive atmospheres can constitute a safety hazard.

Your cellular terminal or mobile receives and transmits radio frequency energy while switched on. Remember that interference can occur if it is used close to TV sets, radios, computers or inadequately shielded equipment. Follow any special regulations and always switch off the cellular terminal or mobile wherever forbidden, or when you suspect that it may cause interference or danger.

Road safety comes first! Do not use a hand-held cellular terminal or mobile when driving a vehicle, unless it is securely mounted in a holder for speakerphone operation. Before making a call with a hand-held terminal or mobile, park the vehicle.

Speakerphones must be installed by qualified personnel. Faulty installation or operation can constitute a safety hazard.

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1.3 Regulatory and Type Approval Information

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IMPORTANT!

Cellular terminals or mobiles operate using radio signals and cellular networks. Because of this, connection cannot be guaranteed at all times under all conditions. Therefore, you should never rely solely upon any wireless device for essential communications, for example emergency calls.

Remember, in order to make or receive calls, the cellular terminal or mobile must be switched on and in a service area with adequate cellular signal strength.

Some networks do not allow for emergency calls if certain network services or phone features are in use (e.g. lock functions, fixed dialing etc.). You may need to deactivate those features before you can make an emergency call.

Some networks require that a valid SIM card be properly inserted in the cellular terminal or mobile.

Bear in mind that exposure to excessive levels of noise can cause physical damage to users! With regard to acoustic shock, the cellular application must be designed to avoid unintentional increase of amplification, e.g. for a highly sensitive earpiece. A protection circuit should be implemented in the cellular application.

XT65/XT75 Hardware Interfa ce Overview

2 Product Concept

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2 Product Concept

2.1 Key Features at a Glance

Feature Implementation

General

Frequency bands Quad band: GSM 850/900/1800/1900MHz

GSM class Small MS

Output power (according to

Release 99, V5)

Class 4 (+33dBm ±2dB) for EGSM850 Class 4 (+33dBm ±2dB) for EGSM900 Class 1 (+30dBm ±2dB) for GSM1800 Class 1 (+30dBm ±2dB) for GSM1900

XT75 only: Class E2 (+27dBm ± 3dB) for GSM 850 8-PSK Class E2 (+27dBm ± 3dB) for GSM 900 8-PSK Class E2 (+26dBm +3 /-4dB) for GSM 1800 8-PSK Class E2 (+26dBm +3 /-4dB) for GSM 1900 8-PSK

The values stated above are maximum limits. According to Release 99, the maximum output power in a multislot configuration may be lower. The nominal reduction of maximum output power varies with the number of uplink timeslots used and amounts to 3.0dB for 2Tx, 4.8dB for 3Tx and 6.0dB for 4Tx.

Power supply 3.3V to 4.5V

Ambient operating

temperature according to

IEC 60068-2

Normal operation: -30°C to +65°C

Restricted operation:-30°C / +85°C

Physical Dimensions: 34mm x 59mm x 3.5mm

Weight: < 10g

RoHS All hardware components fully compliant with EU RoHS Directive

GSM / GPRS / EGPRS features

Data transfer GPRS:

Multislot Class 12 Full PBCCH support Mobile Station Class B Coding Scheme 1 – 4

EGPRS (XT75 only):

Multislot Class 10 Mobile Station Class B Modulation and Coding Scheme MCS 1 – 9

CSD:

V.110, RLP, non-transparent

2.4, 4.8, 9.6, 14.4kbps USSD

PPP-stack for GPRS data transfer

XT65/XT75 Hardware Interfa ce Overview

2.1 Key Features at a Glance

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SMS Point-to-point MT and MO

Cell broadcast

Text and PDU mode

Storage: SIM card plus 25 SMS locations in mobile equipment

Transmission of SMS alternatively over CSD or GPRS. Preferred mode can be user defined.

Fax Group 3; Class 1

Audio Speech codecs:

Half rate HR (ETS 06.20)

Full rate FR (ETS 06.10)

Enhanced full rate EFR (ETS 06.50/06.60/06.80)

Adaptive Multi Rate AMR

Speakerphone operation, echo cancellation, noise suppression, DTMF, 7 ringing tones

GPS Features

Supported Protocol NMEA-0183, RTCM v2.2, UBX binary protocol

GPS modes GPS, Assisted GPS (AGPS), Differential GSP (DGPS), Satellite Based Augmen-

tation Systems (SBAS)

Position accuracy 10-15m, with DGPS/SBAS 1-3m

Start-up times Hot start < 3.5s

Warm start 33s, average

Cold start 34s, average

Sensitivity Active antenna:

Aquisition sensitivity: -141dBm Tracking sensitivity: -158dBm

At antenna connector:

Aquisition sensitivity: -139dBm Tracking sensitivity: -156dBm

General Receiver 16 channel, L1 1575.42 MHz, GPS part controlled by GSM baseband

controller, Java engine or via application (ASC0)

Software

AT commands AT-Hayes GSM 07.05 and 07.07, Siemens

AT commands for RIL compatibility (NDIS/RIL)

Microsoft

compatibility RIL / NDIS for Pocket PC and Smartphone

Java platform

JDK Version: 1.4.2_09

Java Virtual Machine with APIs for AT Parser, Serial Interface, FlashFileSystem and TCP/IP Stack.

Major benefits: seamless integration into Java applications, ease of programming, no need for application microcontroller, extremely cost-efficient hardware and software design – ideal platform for industrial GSM applications.

The memory space available for Java programs is around 1.2 MB in the flash file system and around 400kB RAM. Application code and data share the space in the flash file system and in RAM.

Feature Implementation

XT65/XT75 Hardware Interfa ce Overview

2.1 Key Features at a Glance

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SIM Application Toolkit SAT Release 99

TCP/IP stack Access by AT commands

IP addresses IP version 4

Remote SIM Access XT65/XT75 supports Remote SIM Access. RSA enables XT65/XT75 to use a

remote SIM card via its serial interface and an external application, in addition to the SIM card locally attached to the dedicated lines of the application interface. The connection between the external application and the remote SIM card can be a Bluetooth wireless link or a serial link.

The necessary protocols and procedures are implemented according to the “SIM Access Profile Interoperability Specification of the Bluetooth Special Interest Group”.

Firmware update Generic update from host application over ASC0 or USB. Over-the-air (OTA)

firmware update is possible via SPI interface.

Interfaces

Serial interface (ASC0) - 8-wire modem interface with status and control lines, unbalanced,

asynchronous

- Fixed bit rates: 300 bps to 460,800 bps

- Autobauding: 1,200 bps to 460,800 bps

- RTS0/CTS0 and XON/XOFF flow control.

- Multiplex ability according to GSM 07.10 Multiplexer Protocol.

USB Supports a USB 2.0 Full Speed (12Mbit/s) slave interface.

I2C

I2C bus for 7-bit addressing and transmission rates up to 400kbps. Programmable with AT^SSPI command.

Alternatively, all pins of the I²C interface are configurable as SPI.

SPI Serial Peripheral Interface for transmission rates up to 6.5 Mbps.

Programmable with AT^SSPI command.

If the SPI is active the I²C interface is not available.

Audio 2 analog interfaces (2 microphone inputs and 2 headphone outputs with micro-

phone power supply)

1 digital interface (PCM)

SIM interface Supported SIM cards: 3V, 1.8V

Antenna • 50Ohms. External GSM antenna can be connected via antenna connector.

• 50Ohms. External GPS antenna can be connected via antenna connector.

Module interface 80-pin board-to-board connector

Power on/off, Reset

Power on/off Switch-on by hardware pin IGT

Switch-off by AT command (AT^SMSO)

Automatic switch-off in case of critical temperature and voltage conditions.

Reset Orderly shutdown and reset by AT command

Emergency reset by hardware pin EMERG_RST and IGT.

Feature Implementation

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2.1 Key Features at a Glance

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Special features

Charging Supports management of rechargeable Lithium Ion and Lithium Polymer batter-

ies

Real time clock Timer functions via AT commands

GPIO 10 I/O pins of the application interface programmable as GPIO.

Programming is done via AT commands.

Alternatively, GPIO pin10 is configurable as pulse counter.

Pulse counter Pulse counter for measuring pulse rates from 0 to 1000 pulses per second.

If the pulse counter is active the GPIO10 pin is not available.

DAC output Digital-to-Analog Converter which can provide a PWM signal.

Phonebook SIM and phone

Evaluation kit

DSB75 DSB75 Evaluation Board designed to test and type approve Siemens cellular

engines and provide a sample configuration for application engineering.

Feature Implementation

XT65/XT75 Hardware Interfa ce Overview

3 Application Interface

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3 Application Interface

XT65/XT75 is equipped with an 80-pin board-to-board connector that connects to the external application and incorporates several sub-interfaces: power supply, charger interface, SIM interface, serial interface ASC0, serial interface USB, serial interface I²C/SPI, two analog audio interfaces, digital audio interface (DAI), 10 lines GPIO interface, as well as status and control lines: IGT, EMERG_RST, PWR_IND, SYNC (for details see Chapter 2 and Section 6.5).

+ 40 hidden pages

Siemens XT65,XT75 Hardware Overview

Specifications and Main Features

Frequently Asked Questions

User Manual