Siemens Cellular Engine Hardware Interface Description Version 00.02 DocID: MC45_HD_01_V00.
MC45 Hardware Interface Description PRELIMINARY Document Name: MC45 Hardware Interface Description Version: Date: DocId: 00.02 August 12, 2002 MC45_HD_01_V00.02a Status: PRELIMINARY General notes With respect to any damages arising in connection with the described product or this document, Siemens shall be liable according to the General Conditions on which the delivery of the described product and this document are based.
MC45 Hardware Interface Description PRELIMINARY Contents 0 Version History........................................................................................................... 7 1 Introduction ................................................................................................................ 9 1.1 Related documents ............................................................................................. 9 1.2 Terms and abbreviations.................................................
MC45 Hardware Interface Description PRELIMINARY 3.7 3.8 3.9 3.6.2 Speech processing ...............................................................................51 3.6.3 DAI timing.............................................................................................51 SIM interface......................................................................................................53 3.7.1 Requirements for using the CCIN pin ...................................................54 3.7.
MC45 Hardware Interface Description PRELIMINARY Figures Figure 1: MC45 block diagram .............................................................................................21 Figure 2: Power supply limits during transmit burst ..............................................................26 Figure 3: Schematic of approved charging transistor, trickle charging and ESD protection..27 Figure 4: Battery pack circuit diagram .................................................................................
MC45 Hardware Interface Description PRELIMINARY Table 8: AT commands available in Charge-only mode .......................................................32 Table 9: AT commands available in Alarm mode .................................................................35 Table 10: Wake-up events in NON-CYCLIC and CYCLIC SLEEP modes............................39 Table 11: Temperature dependent behaviour.......................................................................
MC45 Hardware Interface Description PRELIMINARY 0 Version History Preceding document: "MC45 Hardware Interface Description" Version 00.02 New document: "MC45 Hardware Interface Description" Version 00.02a Chapter Page What is new Throughout this manual: Replaced product photo of MC45. 1.4 15f Added notes regarding compliance with FCC guidelines Preceding document: "MC45 Hardware Interface Description" Version 00.01 New document: "MC45 Hardware Interface Description" Version 00.
MC45 Hardware Interface Description PRELIMINARY 6.4.1 79ff Added current consumption during transmit burst. 6.5 81ff Added notes on AT commands where applicable. Table 31: Modified MIC input signal in modes 5 and 6. Table 32: Added Differential load capacitance 1000pF. Table 33: Voiceband transmit path: Corrected input voltage (peak to peak). 6.6 86 Updated Table 34: Air Interface 8 89 Added ordering information for VOTRONIC handset MC45_HD_01_V00.02a Page 8 of 90 12.08.
MC45 Hardware Interface Description PRELIMINARY 1 Introduction This document describes the hardware interface of the Siemens MC45 module that connects to the cellular device application and the air interface. As MC45 is intended to integrate with a wide range of application platforms, all functional components are described in great detail. So this guide covers all information you need to design and set up cellular applications incorporating the MC45 module.
MC45 Hardware Interface Description PRELIMINARY 1.
MC45 Hardware Interface Description PRELIMINARY Abbreviation Description FDMA Frequency Division Multiple Access FR Full Rate GMSK Gaussian Minimum Shift Keying 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
MC45 Hardware Interface Description PRELIMINARY Abbreviation Description RMS Root Mean Square (value) ROM Read-only Memory RTC Real Time Clock Rx Receive Direction SAR Specific Absorption Rate SELV Safety Extra Low Voltage SIM Subscriber Identification Module SMS Short Message Service SRAM Static Random Access Memory TA Terminal adapter (e.g.
MC45 Hardware Interface Description PRELIMINARY 1.3 Type approval MC45 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.
MC45 Hardware Interface Description PRELIMINARY SAR requirements specific to handheld mobiles Mobile phones, PDAs or other handheld 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 handheld MC45 based applications to be evaluated and approved for compliance with national and/or international regulations.
MC45 Hardware Interface Description PRELIMINARY 1.4 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 MC45. 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.
MC45 Hardware Interface Description PRELIMINARY 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.
MC45 Hardware Interface Description PRELIMINARY 2 Product concept Designed for use on any GSM network in the world, Siemens MC45 is a tri-band GSM/GPRS engine that works on the three frequencies GSM 900 MHz, GSM 1800 MHz and GSM 1900 MHz. MC45 features GPRS multislot class 10 and supports the GPRS coding schemes CS-1, CS-2, CS-3 and CS-4. To save space on the application platform, MC45 comes as an extremely slim and compact module.
MC45 Hardware Interface Description PRELIMINARY 2.1 MC45 key features at a glance Table 1: MC45 key features Feature Implementation Power supply Single supply voltage 3.3V – 4.
MC45 Hardware Interface Description PRELIMINARY Feature Implementation SIM interface · Supported SIM card: 3V · External SIM card reader has to be connected via interface connector (note that card reader is not part of MC45) External antenna Connected via 50 Ohm antenna connector or antenna pad Audio interfaces Two analog audio interfaces, one digital audio interface (DAI) Speech codec · Half Rate (ETS 06.20) · Full Rate (ETS 06.10) · Enhanced Full Rate (ETS 06.50 / 06.60 / 06.
MC45 Hardware Interface Description PRELIMINARY Table 2: Coding schemes and maximum net data rates over air interface Coding scheme 1 Timeslot 2 Timeslots 4 Timeslots CS-1: 9.05 kbps 18.1 kbps 36.2 kbps CS-2: 13.4 kbps 26.8 kbps 53.6 kbps CS-3: 15.6 kbps 31.2 kbps 62.4 kbps CS-4: 21.4 kbps 42.8 kbps 85.
MC45 Hardware Interface Description PRELIMINARY 2.2 Circuit concept Figure 1 shows a block diagram of the MC45 module and illustrates the major functional components: · · · · · · · GSM / GPRS baseband processor Power supply ASIC Flash SRAM GSM RF section incl.
MC45 Hardware Interface Description PRELIMINARY 3 Application Interface MC45 is equipped with a 50-pin 0.5mm pitch board-to-board connector that connects to the cellular application platform. The host interface incorporates several sub-interfaces described in the following chapters: · Power supply and charging control (see Chapters 3.2 and 3.3) · Dual serial interface (see Chapter 3.5) · Two analog audio interfaces and a digital audio interface (see Chapter 3.6) · SIM interface (see Chapter 3.
MC45 Hardware Interface Description PRELIMINARY 3.1 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 GSM / GPRS SLEEP Various powersave command. modes set with AT+CFUN Software is active to minimum extent. If the module was registered to the GSM network in IDLE mode, it is registered and paging with the BTS in SLEEP mode, too.
MC45 Hardware Interface Description PRELIMINARY Mode Function Alarm mode Restricted operation launched by RTC alert function while the module is in POWER DOWN mode. Module will not be registered to GSM network. Limited number of AT commands is accessible. If application is battery powered: No charging functionality in Alarm mode. Charge-only mode Limited operation for battery powered applications. Enables charging while module is detached from GSM network. Limited number of AT commands is accessible.
MC45 Hardware Interface Description PRELIMINARY 3.2 Power supply The power supply of MC45 has to be a single voltage source of VBATT+= 3.3V...4.5V. It must be able to provide sufficient current in a transmit burst which typically rises to 2A. Beyond that, the power supply must be able to account for increased current consumption if the module is exposed to inappropriate conditions, for example antenna mismatch. For further details see Chapters 3.2.2 and 6.4.1.
MC45 Hardware Interface Description PRELIMINARY 3.2.2 Minimizing power losses When designing the power supply for your application please pay specific attention to power losses. Ensure that the input voltage VBATT+ never drops below 3.3 V on the MC45 board, not even in a transmit burst where current consumption can rise to peaks of 2A. It should be noted that MC45 switches off when exceeding these limits. Any voltage drops that may occur in a transmit burst should not exceed 400mV.
MC45 Hardware Interface Description PRELIMINARY 3.2.3 Charging control MC45 integrates a charging management for Li-Ion batteries. You can skip this chapter if charging is not your concern, or if you are not using the implemented charging algorithm. MC45 has no on-board charging circuit. To benefit from the implemented charging management you are required to install a charging circuit within your application. In this case, MC45 needs to be powered from a Li-Ion battery pack, e.g. as specified in Table 6.
MC45 Hardware Interface Description PRELIMINARY 3.2.3.1 Battery pack characteristics The charging algorithm has been optimized for a Li-Ion battery pack that meets the characteristics listed below. It is recommended that the battery pack you want to integrate into your MC45 application is compliant with these specifications. This ensures reliable operation, proper charging and, particularly, allows you to monitor the battery capacity using the AT^SBC command (see [1] for details).
MC45 Hardware Interface Description PRELIMINARY 3.2.3.2 Recommended battery pack The following battery pack has been especially designed for use with MC45 modules. Table 6: Specifications of XWODA battery pack Product name, type XWODA, Li-Ion, 3.6V, 800mAh Vendor Shenzhen Xwoda Electronic Co., Ltd Unit 3003, Yingjingyuan,Zhongdian Garden, Shenzhen 518032 P.R.China To place orders or obtain more information please contact: Contact: Edward Lau or Andy Zhao Phone: +86-755-7623789 ext.
MC45 Hardware Interface Description PRELIMINARY 3.2.3.3 Implemented charging technique If the external charging circuit follows the recommendation of Figure 3, the charging process consists of trickle charging and processor controlled fast charging. For this solution, the fast charging current provided by the charger or any other external source must be limited to 500mA. Trickle charging · Trickle charging starts when the charger is connected to the POWER pin of the external charging circuit.
MC45 Hardware Interface Description PRELIMINARY What to do if software controlled charging does not start up? If trickle charging fails to raise the battery voltage to 3.2V within 60 minutes +10%, processor controlled charging does not begin. To start fast charging you can do one of the following: · Once the voltage has risen above its minimum of 3V, you can try to start software controlled charging by pulling the /IGT line to ground.
MC45 Hardware Interface Description PRELIMINARY Features of Charge-only mode Once the GSM engine enters the Charge-only mode, the AT command interface presents an Unsolicited Result Code (URC) which reads: ^SYSSTART CHARGE-ONLY MODE Note that this URC will not appear when autobauding was activated (due to the missing synchronization between DTE and DCE upon start-up). Therefore, it is recommended to select a fixed baudrate before using the Charge-only mode.
MC45 Hardware Interface Description PRELIMINARY 3.3 Power up / down scenarios 3.3.1 Turn on MC45 MC45 can be activated in a variety of ways, which are described in the following chapters: · via ignition line /IGT: starts normal operating state (see Chapters 3.3.1.1 and 3.3.1.2) · via POWER line: starts charging algorithm (see Chapters 3.2.3.4 and 3.3.1.3) · via RTC interrupt: starts Alarm mode (see Chapter 3.3.1.4) 3.3.1.
MC45 Hardware Interface Description PRELIMINARY 3.3.1.2 Timing of the ignition process When designing your application platform take into account that powering up MC45 requires the following steps. · The ignition line cannot be operated until VBATT+ passes the level of 3.0V. · 10ms after VBATT+ has reached 3.0V the ignition line can be switched low. The duration of the falling edge must not exceed 1ms. · Another 100ms are required to power up the module. · Ensure that VBATT+ does not fall below 3.
MC45 Hardware Interface Description PRELIMINARY 3.3.1.3 Turn on MC45 using the POWER signal As detailed in Chapter 3.2.3.4, the charging adapter can be connected regardless of the module’s operating mode (except for Alarm mode). If the charger is connected to the POWER pins of the external charging circuit and of the module while MC45 is off, processor controlled fast charging starts (see Chapter 3.2.3.3).
MC45 Hardware Interface Description PRELIMINARY 3.3.2 Power saving SLEEP mode reduces the functionality of the MC45 module to a minimum and, thus, minimizes the current consumption to the lowest level. SLEEP mode is set with the AT+CFUN command which provides the choice of the functionality levels =0, 1, 5, 6, 7 or 8, all explained below. Further instructions of how to use AT+CFUN can be found in [1]. IMPORTANT: The AT+CFUN command can be executed before or after entering PIN1.
MC45 Hardware Interface Description PRELIMINARY The CYCLIC SLEEP mode is a dynamic process which alternatingly enables and disables the serial interface. The application must be configured to use hardware flow control. By setting/resetting the /CTS signal, the module indicates to the application when the UART is active. The application must wait until /CTS is set (i.e. is active low) on the physical UART before data can be sent to the module.
MC45 Hardware Interface Description PRELIMINARY Figure 10 illustrates the CFUN=5 mode, which resets the /CTS signal 2 seconds after the last character was sent or received. The UART is kept active for another 5 ms before power saving begins. Paging message 2.12 s Paging message 2.12 s Paging message 2.
MC45 Hardware Interface Description PRELIMINARY 3.3.2.5 Wake up MC45 from SLEEP mode A wake-up event is any event that switches off the SLEEP mode and causes MC45 to return to full functionality. In short, it takes MC45 back to AT+CFUN=1. Definitions of the state transitions described in Table 10: Yes = MC45 exits SLEEP mode. No = MC45 does not exit SLEEP mode.
MC45 Hardware Interface Description PRELIMINARY 3.3.3 Turn off MC45 To switch the module off the following procedures may be used: · Normal shutdown procedure: Software controlled by sending the AT^SMSO command over the RS-232 application interface. See Chapter 3.3.3.1. · Emergency shutdown: Hardware driven by switching the /EMERGOFF line of the boardto-board connector to ground = immediate shutdown of supply voltages, only applicable if the software controlled procedure fails! See Chapter 3.3.3.2.
MC45 Hardware Interface Description PRELIMINARY 3.3.3.2 Emergency shutdown using /EMERGOFF pin Caution: Use the /EMERGOFF pin only when, due to serious problems, the software is not responding for more than 5 seconds. Pulling the /EMERGOFF pin causes the loss of all information stored in the volatile memory since power is cut off immediately. Therefore, this procedure is intended only for use in case of emergency, e.g. if MC45 fails to shut down properly.
MC45 Hardware Interface Description PRELIMINARY 3.3.4 Automatic shutdown To ensure proper operation of all assemblies under varying conditions, such as temperature, input voltage, transmission power etc., MC45 features protection elements for automatic shutdown.
MC45 Hardware Interface Description PRELIMINARY Table 11: Temperature dependent behaviour Sending temperature alert (15 s after start-up, otherwise only if URC presentation enabled) ^SCTM_A: 1 Caution: Tamb of battery close to overtemperature limit. ^SCTM_B: 1 Caution: Tamb of board close to overtemperature limit. ^SCTM_A: -1 Caution: Tamb of battery close to undertemperature limit. ^SCTM_B: -1 Caution: Tamb of board close to undertemperature limit.
MC45 Hardware Interface Description PRELIMINARY 3.3.4.4 Shutdown in the event of overvoltage Overvoltage protection is implemented in the PSU-ASIC. If the supply voltage raises to VBATT+ > 5.8V MC45 switches off automatically. In contrast to undervoltage shutdown · there is no URC function available · and the module turns off immediately, i.e. loss of data cannot be avoided. Remark: The PA is always connected to the supply voltage, also in case of an emergency switch off.
MC45 Hardware Interface Description PRELIMINARY 3.3.
MC45 Hardware Interface Description PRELIMINARY 3.4 RTC backup The internal Real Time Clock of MC45 is supplied from a separate voltage regulator in the power supply ASIC which is also active when MC45 is in POWER DOWN status. An alarm function is provided for activating and deactivating MC45. In addition, you can use the VDDLP pin on the board-to-board connector (pin no. 43) to backup the RTC from an external capacitor or a battery (rechargeable or non-chargeable).
MC45 Hardware Interface Description PRELIMINARY 3.5 Serial interfaces MC45 offers two serial interfaces, each operating at 2.65V level. All RS-232 signals on the board-to-board connector are low active. Both interfaces are implemented as a serial asynchronous transmitter and receiver conforming to ITU-T RS-232 Interchange Circuits DCE. The GSM engine is designed for use as a DCE.
MC45 Hardware Interface Description PRELIMINARY RS-232(0) Includes the data lines /TXD0 and /RXD0, the status lines /RTS0 and /CTS0 and, in addition, the modem control lines /DTR0, /DSR0, /DCD0 and /RING0. It is primarily designed for voice, CSD, fax and GPRS services and for controlling the GSM engine with AT commands. Full Multiplex capability allows the interface to be partitioned into three virtual channels, yet with CSD and fax services only available on the first logical channel.
MC45 Hardware Interface Description PRELIMINARY 3.6 Audio interfaces MC45 comprises three audio interfaces available on the board-to-board connector: · Two analog audio interfaces, each with a balanced analog microphone input and a balanced analog earpiece output. The second analog interface provides a supply circuit to feed an active microphone. · Serial digital audio interface (DAI) using PCM (Pulse Code Modulation) to encode analog voice signals into digital bit streams.
MC45 Hardware Interface Description PRELIMINARY When shipped from factory, all audio parameters of MC45 are set to interface 1 and audio mode 1. This is the default configuration optimized for the Votronic HH-SI-30.3/V1.1/0 handset and used for type approving the Siemens reference configuration. Audio mode 1 has fix parameters which cannot be modified. To adjust the settings of the Votronic handset simply change to another audio mode. 3.6.
MC45 Hardware Interface Description PRELIMINARY 3.6.2 Speech processing The speech samples from the ADC or DAI are handled by the DSP of the baseband controller to calculate e.g. amplifications, sidetone, echo cancellation or noise suppression depending on the configuration of the active audio mode. These processed samples are passed to the speech encoder. Received samples from the speech decoder are passed to the DAC or DAI after post processing (frequency response correction, adding sidetone etc.).
MC45 Hardware Interface Description PRELIMINARY Note: Before starting the data transfer the clock SCLK should be available for at least three cycles. After the transfer of the LSB0 the clock SCLK should be still available for at least three cycles.
MC45 Hardware Interface Description PRELIMINARY 3.7 SIM interface The baseband processor has an integrated SIM interface compatible with the ISO 7816-3 IC Card standard. This is wired to the host interface (board-to-board connector) in order to be adapted to an external SIM card holder. Six pins on the board-to-board connector are reserved for the SIM interface. Further to the five wire SIM interface according to GSM 11.11, the CCIN pin has been added.
MC45 Hardware Interface Description PRELIMINARY 3.7.1 Requirements for using the CCIN pin The module’s startup procedure involves a SIM card initialization performed within 1 second after getting started.
MC45 Hardware Interface Description PRELIMINARY 3.7.2 Design considerations for SIM card holder The schematic below is a sample configuration that illustrates the Molex SIM card holder located on the DSB45 Support Box (evaluation kit used for type approval of the Siemens MC45 reference setup, see [4]). X503 is the designation used for the SIM card holder in [4].
MC45 Hardware Interface Description PRELIMINARY 3.7.3 Grounding the SIM interface To ground the SIM interface you can proceed from several approaches, depending on your individual application design. The following information is just one of several options you can apply: Potential equalization can best be achieved by applying a separate ground for the SIM interface.
MC45 Hardware Interface Description PRELIMINARY 3.8 Control signals The following control signals are available (2.65V level). 3.8.1 Inputs Table 15: Input control signals of the MC45 module Signal Pin Pin status Function Remarks Ignition /IGT Falling edge Power up MC45 Left open or HiZ No operation Active low ³ 100ms (Open drain/collector driver to GND required in cellular device application).
MC45 Hardware Interface Description PRELIMINARY 3.8.2 Outputs 3.8.2.1 Synchronization signal The synchronization signal serves to indicate growing power consumption during the transmit burst. The signal is generated by the SYNC pin (pin number 32). Please note that this pin can adopt two different operating modes which you can select by using the AT^SSYNC command (mode 0 and 1). For details refer to the following chapter and to the "AT Command Set".
MC45 Hardware Interface Description PRELIMINARY 3.8.2.2 Using the SYNC pin to control a status LED As an alternative to generating the synchronization signal, the SYNC pin can be used to control a status LED on your application platform. To avail of this feature you need to set the SYNC pin to mode 1 by using the AT^SSYNC command. For details see the "AT Command Set". When controlled from the SYNC pin the LED can display the functions listed in Table 17.
MC45 Hardware Interface Description PRELIMINARY 3.8.2.3 Behaviour of the /RING0 line (RS-232(0) interface only) The /RING0 line is available on the RS-232(0) interface. Its behaviour depends on the type of the call received. · When a voice call comes in the /RING0 line goes low for 1s and high for another 4s. Every 5 seconds the ring string is generated and sent over the /RXD0 line.
MC45 Hardware Interface Description PRELIMINARY 3.9 Electrical specifications of the application interface Please note that the reference voltages listed in Table 14 are the values measured directly on the MC45 module. They do not apply to the accessories connected. If an input pin is specified for Vi,h,max = 3.3V, be sure never to exceed the stated voltage. The value 3.3V is an absolute maximum rating. The Hirose DF12C board-to-board connector on MC45 is a 50-pin double-row receptacle.
MC45 Hardware Interface Description PRELIMINARY Table 19: Pin assignment and electrical description of application interface Function Signal name IO Signal form and level Comments Power supply BATT+ I VI = 3.3V to 4.5V VInorm = 4.1V Inorm ≈ 2A, Imax < 3A (during Tx burst) 1 Tx, peak current 577µs every 4.616ms 2 Tx, peak current 1154µs every 4.616ms Power supply input. 5 BATT+ pins to be connected in parallel. 5 GND pins to be connected in parallel.
MC45 Hardware Interface Description PRELIMINARY Function Signal name IO Signal form and level Comments Ignition /IGT I RI ≈ 100kW, CI ≈ 1nF VILmax = 0.5V at Imax = -20µA VOpenmax = 2.3V Input to switch the mobile ON. The line must be driven low by an Open Drain or Open Collector driver. ON Emergency shutdown (Watchdog) /EMERGOFF I ~~~ |____| ~~~ Active Low ³ 100ms RI ≈22kW VILmax = 0.5V at Imax = -100µA VOpenmax = 2.73V Signal ~~~ |______| ~~~ Active Low ³ 3.2s Watchdog: VOLmax = 0.
MC45 Hardware Interface Description PRELIMINARY Function Signal name IO Signal form and level Comments RS-232 (0) interface /RXD0 O /TXD0 I First serial interface for AT commands or data stream. /CTS0 O VOLmax = 0.2V at I = 1mA VOHmin = 2.35V at I = -1mA VOHmax = 2.
MC45 Hardware Interface Description PRELIMINARY 4 Antenna interface (antenna reference point – ARP) To suit the physical design of individual applications MC45 offers two alternative approaches to connecting the antenna: The standard layout of MC45 comprises an antenna connector from Hirose assembled on the component side of the PCB (top view on MC45) plus a antenna pad placed on the bottom side.
MC45 Hardware Interface Description PRELIMINARY 5 Physical characteristics 5.1 Mechanical dimensions of MC45 Figure 27 shows the top view on MC45 and provides an overview of the mechanical dimensions of the board. For further details see Figure 28. Size: 53 +0.2 x 34 +0.2 x 3.5+0.3 mm Weight: 10g Figure 27: MC45 – top view MC45_HD_01_V00.02a Page 66 of 90 12.08.
MC45 Hardware Interface Description PRELIMINARY Board-to-board connector MC45 All dimensions in millimeter Figure 28: Mechanical dimensions of MC45 MC45_HD_01_V00.02a Page 67 of 90 12.08.
MC45 Hardware Interface Description PRELIMINARY Ø1 .1 Ground pad, e.g. for heat dissipator or connection to host device TP 402 14.42 4.75 0.00 0.00 15.50 TP GND 24.40 26.90 10.60 TP BATT+ Figure 29: MC45 bottom view MC45_HD_01_V00.02a Page 68 of 90 12.08.
MC45 Hardware Interface Description PRELIMINARY 5.2 Mounting MC45 onto the application platform There are many ways to properly install MC45 in the host device. An efficient approach is to mount the MC45 PCB to a frame, plate, rack or chassis. Fasteners can be M1.6 or M1.8 screws plus suitable washers, circuit board spacers, or customized screws, clamps, or brackets. In addition, the board-to-board connection can also be utilized to achieve better support.
MC45 Hardware Interface Description PRELIMINARY 5.3 Board-to-board connector This chapter provides specifications for the 50-pin board-to-board connector which serves as physical interface to the host application. The receptacle assembled on the MC45 PCB is type Hirose DF12C. Mating headers from Hirose are available in different stacking heights.
MC45 Hardware Interface Description PRELIMINARY 5.3.1 Mechanical dimensions of the Hirose DF12 connector Figure 32: Mechanical dimensions of Hirose DF12 connector 5.3.2 Adapter cabling The board-to-board connection is primarily intended for direct contact between both connectors.
MC45 Hardware Interface Description PRELIMINARY 5.4 Antenna design This chapter describes the various options of connecting an external antenna to MC45. Be sure that all peripherals are applied according to the manufacturer’s antenna specifications. For internal antenna equipment, you are advised to use the services of a consultant or fullservice house. 5.4.1 Hirose antenna connector MC45 uses an ultra-miniature SMT antenna connector supplied from Hirose Ltd. The product name is: U.
MC45 Hardware Interface Description PRELIMINARY Temperature cycle No damage, cracks and looseness of parts. Contact resistance: Center 25 mW Outside 15mW Temperature: +40°C ® 5 to 35°C ® +90°C ® 5 to 35°C Time: 30 min. ® within 5 min. ® 30 min. within 5 min Salt spray test No excessive corrosion 48 hours continuous exposure to 5% salt water Table 24: Material and finish of U.
MC45 Hardware Interface Description PRELIMINARY In addition to the connectors illustrated above, the U.FL-LP-(V)-040(01) version is offered as an extremely space saving solution. This plug is intended for use with extra fine cable (up to Æ 0.81 mm) and minimizes the mating height to 2 mm. See Figure 36 which shows the Hirose datasheet. Figure 36: Specifications of U.FL-LP-(V)-040(01) plug MC45_HD_01_V00.02a Page 74 of 90 12.08.
MC45 Hardware Interface Description PRELIMINARY Table 25: Ordering information for Hirose U.FL Series Item Part number HRS number Connector on MC45 U.FL-R-SMT CL331-0471-0-10 Right-angle plug shell for Æ 0.81 mm cable U.FL-LP-040 CL331-0451-2 Right-angle plug for Æ 0.81 mm cable U.FL-LP(V)-040 (01) CL331-053-8-01 Right-angle plug for Æ 1.13 mm cable U.FL-LP-066 CL331-0452-5 Right-angle plug for Æ 1.32 mm cable U.FL-LP-066 CL331-0452-5 Extraction jig E.FL-LP-N CL331-04441-9 5.4.
MC45 Hardware Interface Description PRELIMINARY 6 Electrical, reliability and radio characteristics 6.1 Absolute maximum ratings Absolute maximum ratings for supply voltage and voltages on digital and analog pins of MC45 are listed in Table 26. Exceeding these values will cause permanent damage to MC45. The power supply shall be compliant with the SELV safety standard defined in EN60950. The supply current must be limited according to Table 26.
MC45 Hardware Interface Description PRELIMINARY 6.3 Reliability characteristics The test conditions stated below are an extract of the complete test specifications. Table 28: Summary of reliability test conditions Type of test Conditions Standard Vibration Frequency range: 10-20 Hz; acceleration: 3.
MC45 Hardware Interface Description PRELIMINARY 6.4 Power supply ratings Table 29: Power supply ratings Parameter Description Conditions BATT+ Reference points on MC45: TP BATT+ and TP GND Supply voltage Min 3.3 Typ Max 4.1 Unit 4.5 V 400 mV Voltage must stay within the min/max values, including voltage drop, ripple, spikes.
MC45 Hardware Interface Description PRELIMINARY 6.4.1 Current consumption during transmit burst The diagrams provided in Figure 38 and Figure 39 illustrate the typical current consumption of the application caused during a transmit burst. The typical peak current is shown vs. the power level for 900 MHz, 1800 MHz and 1900 MHz and vs. the return loss of the antenna. Test conditions: All measurements have been performed at Tamb= 25°C, VBATT+ nom = 4.1V.
MC45 Hardware Interface Description PRELIMINARY Burst Current : GSM Ch50 Average Current : GSM Ch50 3500 500 450 3000 Current (mA) Pw rClass5 2000 Pw rClass10 1500 Pw rClass15 Pw rClass19 1000 Current (mA) 400 2500 350 Pw rClass5 300 Pw rClass10 250 Pw rClass15 200 Pw rClass19 150 100 500 50 0 0 0 10 20 30 40 0 10 20 30 40 Return Loss (dB) Return Loss (dB) Burst Current : PCN Ch711 Average Current : PCN Ch711 300 1600 1400 250 Pw rClass0 1000 Pw rClass5 800 Pw r
MC45 Hardware Interface Description PRELIMINARY 6.5 Electrical characteristics of the voiceband part 6.5.1 Setting audio parameters by AT commands The audio modes 2 to 6 can be adjusted according to the parameters listed below. Each audio mode is assigned a separate set of parameters. Table 30: Audio parameters adjustable by AT command Parameter Influence to Range Gain range Calculation inBbcGain MICP/MICN analogue amplifier gain of baseband controller before ADC 0...7 0...
MC45 Hardware Interface Description PRELIMINARY 6.5.2 Audio programming model The audio programming model shows how the signal path can be influenced by varying the AT command parameters. The model is the same for all three interfaces, except for the parameters and which cannot be modified on the digital audio interface is being used, since in this case the DAC is switched off. The parameters inBbcGain and inCalibrate can be set with AT^SNFI.
MC45 Hardware Interface Description PRELIMINARY 6.5.3 Characteristics of audio modes The electrical characteristics of the voiceband part depend on the current audio mode set with the AT^SNFS command. Table 31: Voiceband characteristics (typical), all values preliminary Audio mode no.
MC45 Hardware Interface Description PRELIMINARY Note: With regard to acoustic shock, the cellular application must be designed to avoid sending false AT commands that might increase amplification, e.g. for a high sensitive earpiece. A protection circuit should be implemented in the cellular application. 6.5.4 Voiceband receive path Test conditions: · The values specified below were tested to 1kHz and 0dB gain stage, unless otherwise stated.
MC45 Hardware Interface Description PRELIMINARY 6.5.5 Voiceband transmit path Test conditions: · The values specified below were tested to 1kHz and 0dB gain stage, unless otherwise stated. · Parameter setup: Audio mode = 5 for MICP1 to MICN1 and 6 for MICP2 to MICN2, inBbcGain= 0, inCalibrate = 32767, outBbcGain = 0, OutCalibrate = 16384, sideTone = 0 Table 33: Voiceband transmit path Parameter Min Typ Input voltage (peak to peak) Max Unit 1.
MC45 Hardware Interface Description PRELIMINARY 6.6 Air interface Test conditions: All measurements have been performed at Tamb= 25°C, VBATT+ nom = 4.1V. The reference points used on MC45 are the BATT+ and GND contacts (test points are shown in Figure 29).
MC45 Hardware Interface Description PRELIMINARY 6.7 Electrostatic discharge The GSM engine is not protected against Electrostatic Discharge (ESD) in general. Consequently, it is subject to ESD handling precautions that typically apply to ESD sensitive components. Proper ESD handling and packaging procedures must be applied throughout the processing, handling and operation of any application that incorporates a MC45 module.
MC45 Hardware Interface Description PRELIMINARY 7 Reference Approval 7.1 Reference Equipment The Siemens reference setup that will be submitted to type approve MC45 consists of the following components: · Siemens MC45 cellular engine · Development Support Box (DSB45) · Flex cable (160 mm) from Hirose DF12C receptacle on MC45 to Hirose DF12 connector on DSB45. Please note that this cable is not included in the scope of delivery of DSB45.
MC45 Hardware Interface Description PRELIMINARY 8 List of parts and accessories Table 36: List of parts and accessories Description Supplier Ordering information MC45 Siemens Siemens ordering number L36880-N8300-A100 Siemens Car Kit Portable Siemens Siemens ordering number: L36880-N3015-A117 DSB45 Support Box Siemens Siemens ordering number: LS36880-N8301-A100 Votronic Handset VOTRONIC Votronic HH-SI-30.3/V1.
MC45 Hardware Interface Description PRELIMINARY Table 37: Molex sales contacts (subject to change) Molex Molex Deutschland GmbH American Headquarters For further information please click: Felix-Wankel-Str. 11 D-74078 Heilbronn-Biberach Phone: +49(7066)9555 0 Fax: +49(7066)9555 29 Email: mxgermany@molex.com Lisle, Illinois 60532 U.S.A. Phone: 1-800-78MOLEX Fax: 630-969-1352 Molex Singapore Pte. Ltd. Jurong, Singapore Phone: 65-268-6868 Fax: 65-265-6044 Molex Japan Co. Ltd.
