Siemens Cellular Engine Hardware Interface Description Version: 01.05 DocID: TC35i T HD v01.
TC35i Terminal Hardware Interface Description Confidential / Released Document Name: TC35i Terminal Hardware Interface Description Version: Date: DocId: Status: 01.05 10.07.2003 TC35i_T_HD_v01.05 Confidential / Released 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.
TC35i Terminal Hardware Interface Description Confidential / Released Contents 0 Document history....................................................................................................... 5 1 Introduction ................................................................................................................ 6 1.1 1.2 1.3 1.4 References ......................................................................................................... 6 Standards ............................
TC35i Terminal Hardware Interface Description Confidential / Released Figures Figure 1: Block diagram of a TC35i Terminal application (example).....................................14 Figure 2: TC35i GSM engine................................................................................................15 Figure 3: TC35i Terminal circuit block diagram ....................................................................17 Figure 4: Female 6-pole Western plug for power supply, ignition, power down ........
TC35i Terminal Hardware Interface Description Confidential / Released 0 Document history Preceding document: "TC35i Terminal Hardware Interface Description" Version 00.40 New document: "TC35i Terminal Hardware Interface Description" Version 01.05 Chapter Page What is new 0 6 Added Application Note 24: Application Developers’ Guide 1.2, 7 6, 37 TC35i Terminal now fully type approved and labeled with CE mark TC35i_T_HD_v01.05 Page 5/37 10.07.
TC35i Terminal Hardware Interface Description Confidential / Released 1 Introduction This document describes the hardware of the Siemens TC35i Terminal. The information are intended for users, developers or manufacturers who design and build cellular applications beyond the standard setup. The scope of this document includes interface specifications, electrical issues and mechanical characteristics of TC35i Terminal.
TC35i Terminal Hardware Interface Description Confidential / Released 1.2 Standards TC35i Terminal has been approved to comply with the directives and standards listed below and is labeled with the CE conformity mark.
TC35i Terminal Hardware Interface Description Confidential / Released 1.3 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 TC35i Terminal. 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.
TC35i Terminal Hardware Interface Description Confidential / Released SOS IMPORTANT! Cellular terminals or mobiles operate using radio signals and cellular networks cannot be guaranteed to connect in 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.
TC35i Terminal Hardware Interface Description Confidential / Released 1.
TC35i Terminal Hardware Interface Description Confidential / Released Abbreviation Description Li-Ion Lithium-Ion LVD Low voltage Directive Mbps Mbits per second MMI Machine Machine Interface MO Mobile Originated MS Mobile Station MT Mobile Terminated NC Not Connected NTC Negative Temperature Coefficient PA Power Amplifier PCB Printed Circuit Board PCM Pulse Code Modulation PCS Personal Communication System PD Power Down PDU Protocol Data Unit R&TTE Radio and Telecommunicat
TC35i Terminal Hardware Interface Description Confidential / Released 2 Key features of TC35i Terminal Table 2: Key features Feature Implementation Transmission Voice, Data, SMS, Fax Power supply Single supply voltage 8V to 30V GSM class Small MS Frequency bands · Dual Band E-GSM 900 and GSM 1800 · Compliant to GSM Phase 2/2+ Transmit power · Class 4 (2W) for EGSM900 · Class 1 (1W) for GSM1800 SIM card reader Internal External antenna Connected via antenna FME connector Speech codec Tripl
TC35i Terminal Hardware Interface Description Confidential / Released 3 Interface description 3.
TC35i Terminal Hardware Interface Description Confidential / Released 3.2 Block diagram of a GSM application Figure 1 shows a block diagram of a sample configuration that incorporates a TC35i Terminal and typical accessories.
TC35i Terminal Hardware Interface Description Confidential / Released 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.
TC35i Terminal Hardware Interface Description Confidential / Released 3.4 Operating modes The table below briefly summarizes the various operating modes referred to in the following chapters. Table 3: Overview of operating modes Mode Function Normal operation SLEEP Various power saving modes set by AT+CFUN command. Software is active to minimum extent. If the Terminal was registered to the GSM network in IDLE mode, it remains, in SLEEP mode, registered and pageable from the BTS.
TC35i Terminal Hardware Interface Description Confidential / Released 3.
TC35i Terminal Hardware Interface Description Confidential / Released 3.5.1 Power supply and On/Off control The power supply of the TC35i Terminal has to be a single voltage source of VPLUS=8V…30V providing a peak current (pulsed 577ms at T=4.615ms) of about 1.1A at 12V during the active transmission. The uplink burst causes strong ripple (drop) on the power lines. The drop voltage should not exceed 1V, but the absolute minimum voltage during drops must be >7.6V.
TC35i Terminal Hardware Interface Description Confidential / Released Table 4: Female 6-pole Western plug for power supply, ignition, power down Pin Signal Name Use Parameters 1 PLUS Power supply 8V – 30V DC, max. 33V for 1 min 2 free --- --- 3 PD_IN Signal for power down mode UIH >5V for t > 3.
TC35i Terminal Hardware Interface Description Confidential / Released 3.5.2 RTC The internal Real Time Clock (RTC) of TC35i Terminal is supplied from a dedicated voltage regulator which is also active when TC35i Terminal is in POWER DOWN mode. The RTC retains the time and is necessary for the reminder function (even if TC35i Terminal is disconnected from power supply, see Table 11 for details). For example, you can set an alarm by using the AT+CALA command.
TC35i Terminal Hardware Interface Description Confidential / Released Table 5: 9-pole D-Sub (female) RS-232 Pin no. Signal name I/O Function 1 /DCD O Data Carrier Detected 2 /RXD O Receive Data 3 /TXD I Transmit Data 4 /DTR I Data Terminal Ready Attention: The ignition of TC35i Terminal is activated via a rising edge of high potential (+5 ...
TC35i Terminal Hardware Interface Description Confidential / Released 3.6.2 Audio interface The audio interface provides an analog input for a microphone and an analog output for an earpiece. · The microphone input and the earpiece output are balanced. · For electret microphones a supply source is implemented. · The microphone supply characteristics are optimized for the recommended Votronic handset. For ordering Information see Chapter 7.
TC35i Terminal Hardware Interface Description Confidential / Released The audio interface can be configured by AT commands. Please note that the 2nd audio interface mentioned in [1] is not connected. Audio modes 2, 3 and 6 can be selected by setting AT^SAIC=2,1,1, for further details refer to [1]. The electrical characteristics of the voiceband part vary with the audio mode. To suit several types of audio equipment, three audio modes given by default can be selected by the AT command AT^SNFS, see [1].
TC35i Terminal Hardware Interface Description Confidential / Released baseband controller to calculate e.g. amplifications, sidetone, echo cancellation or noise suppression. Full rate, half rate and enhanced full rate, speech and channel encoding including voice activity detection (VAD) and discontinuous transmission (DTX) and digital GMSK modulation are also performed on the GSM baseband processor.
TC35i Terminal Hardware Interface Description Confidential / Released 3.6.3 Radio interface An internal antenna cable adapts the antenna reference point (antenna connector type GSC from Murata) to the FME (male) connector. The position of the antenna reference point can be seen in Figure 1. Inside the TC35i module a 27nH inductor to ground provides additional ESD protection to the antenna connector. For details see Figure 8.
TC35i Terminal Hardware Interface Description Confidential / Released 3.6.4 SIM interface The SIM interface is intended for 3V SIM cards in accordance with GSM 11.12 Phase 2. The card holder is a five wire interface according to GSM 11.11. A sixth pin has been added to detect whether or not a SIM card is inserted. 2. 1. All signals of the SIM interface are protected from electrostatic discharge with spark gaps to GND and clamp diodes to 2.9V and GND.
TC35i Terminal Hardware Interface Description Confidential / Released 4 Mechanical characteristics and mounting advice Table 8: Mechanical characteristics Weight 130 g Dimensions (max) LxWxH = 65x74x33mm Temperature range -20°C to +55 °C Protection class IP40 Avoid exposing TC35i Terminal to liquid or moisture, for example do not use it in a shower or bath.) ( Mechanical vibrations Amplitude 7.5 mm at 5-200 Hz sinus Max. pulse acceleration 30g pulse with 18 ms duration time Air humidity 5...
TC35i Terminal Hardware Interface Description Confidential / Released 4.1 Attaching the terminal The TC35i Terminal can be attached e.g. to a 35mm top-hat rail installation using two M3 x 50mm screws and an additional fixture element, see Figure 12. In case you wish to order the recommended mounting kit, please refer to Chapter 7 for detailed information. Figure 11: Recommended screws TC35i_T_HD_v01.05 Figure 12: Attaching TC35i Terminal onto a tophat rail Page 28/37 10.07.
TC35i Terminal Hardware Interface Description Confidential / Released 5 Electrical and environmental characteristics Table 9: Absolute maximum ratings Parameter Port / Description Min. Max. Unit Supply voltage PLUS -50 30 V Overvoltage PLUS / for 1h 33 V Input voltage for on/off Control lines /IGT_IN, /PD_IN -5 30 V RS-232 input voltage range /TXD, /DTR, /RTS -30 +30 V /RXD, /CTS, /DSR, /DCD, /RING -0.3 +5.3 V Microphone input line voltage MICP, MICN -0.
TC35i Terminal Hardware Interface Description Confidential / Released Table 11: Characteristics power supply Parameter Description Conditions VPLUS Allowed voltage ripple (peak-peak), drop during transmit burst peak current Talk Mode, power control 1) level for Pout max IPLUS 2) Average supply current Power Down mode (average time 3 min.
TC35i Terminal Hardware Interface Description Confidential / Released Table 12: Characteristics (requirements) On/Off control lines Parameter Description Conditions Min Typ Max Unit Vhigh Input voltage active high 5 Vlow /IGT_IN, /PD_IN, /DTR RIN Input resistance of /IGT_IN, /PD_IN 47 RIN Input resistance of /DTR 4 tD_IGT Duration of active high /IGT_IN, /DTR 200 ms tD_PD Duration of active high /PD_IN 3.
TC35i Terminal Hardware Interface Description Confidential / Released Table 14: Characteristics (requirements) audio interface Parameter Min. Typ. Max. Unit 5.6 5.9 6.2 V Microphone DC (no load) at MICP MICP, MICN DC at MICP in POWER DOWN 0 V DC (no load) at MICN 0 V DC Resistance differential MICN, MICP (balanced) 9.3 9.4 9.5 kOhm Impedance Zi (balanced) 1.4 1.5 1.7 kOhm 1.
TC35i Terminal Hardware Interface Description Confidential / Released Audio Modes: The electrical characteristics of the voiceband part depend on the current audio mode selected by the AT command AT^SNFS. See Table 6: Audio modes. The audio modes 4 and 5 can be adjusted by parameters. Each audio mode is assigned a separate parameter set.
TC35i Terminal Hardware Interface Description Confidential / Released Table 16: Air interface Parameter Min Typ Max Unit Frequency range E-GSM 900 880 915 MHz Uplink (MS ® BTS) GSM 1800 1710 1785 MHz Frequency range E-GSM 900 925 960 MHz Downlink (BTS ® MS) GSM 1800 1805 1880 MHz RF power @ ARP at 50Ω load E-GSM 900 30.5 33 35 dBm GSM 1800 27.
TC35i Terminal Hardware Interface Description Confidential / Released 6 Full type approval The Siemens reference setup submitted to type approve TC35i Terminal consists of the following components: · · · · TC35i Terminal with approved GSM Engine TC35i Votronic Handset type PC as MMI Power Supply: Mains adapter Sphere Design Type FW7207/12 PC RS-232 TC35i Terminal ARP Antenna or 50 Ohm cable to the system simulator SIM Power supply Handset Figure 13: Reference equipment for approval For ordering
TC35i Terminal Hardware Interface Description Confidential / Released 6.1 Restrictions Later enhancements and modifications beyond the certified configuration require extra approvals. Each supplementary approval process includes submittal of the technical documentation as well as testing of the changes made. · No further approvals are required for customer applications that comply with the approved TC35i Terminal configuration.
TC35i Terminal Hardware Interface Description Confidential / Released 7 List of parts and recommended accessories Description Supplier Ordering information TC35i Terminal Siemens Siemens ordering number L36880-N8610-A100 Mounting kit for top/hat rail installation Sphere Design Ordering number: 20100 Sphere Design Saarpfalz-Park 17 D-66450 Bexbach / Saar Phone: +49-6826-5200-0 Fax: +49-6826-5200-25 E-Mail: info@spheredesign.de http://www.spheredesign.
