Siemens Cellular Engine Hardware Interface Description Version: 02.8xb DocID: MC46_HD_V02.
MC46 Hardware Interface Description DRAFT Document Name: MC46 Hardware Interface Description Version: Date: DocId: Status: 02.8xb August 21, 2003 MC46_HD_V02.8xb DRAFT General note 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.
MC46 Hardware Interface Description DRAFT Contents 0 Document History ...................................................................................................... 7 1 Introduction ................................................................................................................ 8 1.1 Related documents ............................................................................................. 8 1.2 Terms and abbreviations..........................................................
MC46 Hardware Interface Description DRAFT 3.9.1 Features supported on first and second serial interface .......................49 3.10 Audio interfaces .................................................................................................51 3.10.1 Microphone circuit ................................................................................52 3.10.2 Speech processing ...............................................................................53 3.10.3 DAI timing..........................
MC46 Hardware Interface Description DRAFT Figures Figure 1: MC46 block diagram .............................................................................................20 Figure 2: Power supply limits during transmit burst ..............................................................25 Figure 3: Power-on by ignition signal....................................................................................27 Figure 4: Timing of power-on process if VDDLP is not used .....................................
MC46 Hardware Interface Description DRAFT Tables Table 1: MC46 key features .................................................................................................17 Table 2: Coding schemes and maximum net data rates over air interface ...........................19 Table 3: Overview of operating modes .................................................................................22 Table 4: Power supply pins of board-to-board connector .....................................................
MC46 Hardware Interface Description DRAFT 0 Document History Preceding document: "MC46 Hardware Interface Description" Version 02.8xa New document: "MC46 Hardware Interface Description" Version 02.8xb 7.2 96 Added chapter related to FCC certification. 3.4 35 More detailed description of GPRS Multislot Class change. Preceding document: "MC46 Hardware Interface Description" Version 02.8x New document: "MC46 Hardware Interface Description" Version 02.8xa 3.3.2.
MC46 Hardware Interface Description DRAFT 1 Introduction This document describes the hardware interface of the Siemens MC46 module that connects to the cellular device application and the air interface. As MC46 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 MC46 module.
MC46 Hardware Interface Description DRAFT 1.2 Terms and abbreviations Abbreviation Description ADC Analog-to-Digital Converter AFC Automatic Frequency Control AGC Automatic Gain Control ANSI American National Standards Institute ARFCN Absolute Radio Frequency Channel Number ARP Antenna Reference Point ASC0 / ASC1 Asynchronous Controller.
MC46 Hardware Interface Description DRAFT Abbreviation Description EMC Electromagnetic Compatibility ESD Electrostatic Discharge ETS European Telecommunication Standard FCC Federal Communications Commission (U.S.
MC46 Hardware Interface Description DRAFT Abbreviation Description PPP Point-to-point protocol 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 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
MC46 Hardware Interface Description DRAFT 1.3 Type approval MC46 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.
MC46 Hardware Interface Description DRAFT (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)” EN 60 950 Safety of information technology equipment (2000) Requirements of quality IEC 60068 Environmental testing DIN EN 60529 IP codes Co
MC46 Hardware Interface Description DRAFT 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 MC46. 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.
MC46 Hardware Interface Description DRAFT 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.
MC46 Hardware Interface Description DRAFT 2 Product concept Designed for use on any GSM network in the world, Siemens MC46 is a tri-band GSM/GPRS engine that works on the three frequencies GSM 850 MHz, GSM 1800 MHz and GSM 1900 MHz. MC46 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, MC46 comes as an extremely slim and compact module.
MC46 Hardware Interface Description DRAFT 2.1 MC46 key features at a glance Table 1: MC46 key features Feature Implementation Power supply Single supply voltage 3.2V – 4.
MC46 Hardware Interface Description DRAFT Feature Implementation Audio interfaces Two analog audio interfaces, one digital audio interface (DAI) Audio features Speech codec modes: · Half Rate (ETS 06.20) · Full Rate (ETS 06.10) · Enhanced Full Rate (ETS 06.50 / 06.60 / 06.80) · Adaptive Multi Rate (AMR) Handsfree operation · Echo cancellation · Noise reduction Two serial interfaces: ASC0, ASC1 · 2.65V level, bi-directional bus for AT commands and data · ASC0 – full-featured 8-wire serial interface.
MC46 Hardware Interface Description DRAFT 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.
MC46 Hardware Interface Description DRAFT 2.
MC46 Hardware Interface Description DRAFT 3 Application Interface MC46 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 3.9) · Two analog audio interfaces and a digital audio interface (see Chapter 3.10) · SIM interface (see Chapter 3.
MC46 Hardware Interface Description DRAFT 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.
MC46 Hardware Interface Description DRAFT 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.
MC46 Hardware Interface Description DRAFT 3.2 Power supply The power supply of MC46 has to be a single voltage source of VBATT+= 3.2V...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 5.4.1.
MC46 Hardware Interface Description DRAFT 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 3.2 V on the MC46 board, not even in a transmit burst where current consumption can rise to typical peaks of 2A. It should be noted that MC46 switches off when exceeding these limits. Any voltage drops that may occur in a transmit burst should not exceed 400mV.
MC46 Hardware Interface Description DRAFT 3.3 Power up / down scenarios In general, be sure not to turn on MC46 while it is out of the operating range of voltage and temperature stated in Chapters 5.2 and 5.3. MC46 would immediately switch off after having started and detected these inappropriate conditions. 3.3.1 Turn on MC46 MC46 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.
MC46 Hardware Interface Description DRAFT 3.3.1.1 Turn on MC46 using the ignition line /IGT (Power on) To switch on MC46 the /IGT (Ignition) signal needs to be driven to ground level for at least 100ms and not earlier than 10ms after the last falling edge of VDD. This can be accomplished using an open drain/collector driver in order to avoid current flowing into this pin. BATT+ min. 10ms HiZ min. 100ms HiZ /IGT ca.
MC46 Hardware Interface Description DRAFT 3.3.1.2 Timing of the ignition process When designing your application platform take into account that powering up MC46 requires the following steps. · The ignition line cannot be operated until VBATT+ passes the level of 3.0V. · The ignition line shall not be operated earlier than 10ms after the last falling edge of VDD. · 10ms after VBATT+ has reached 3.0V the ignition line can be switched low. The duration of the falling edge must not exceed 1ms.
MC46 Hardware Interface Description DRAFT 3.3.1.3 Turn on MC46 using the POWER signal As detailed in Chapter 3.5.3, the charging adapter can be connected regardless of the module’s operating mode (except for Alarm mode). If the charger is connected to the charger input of the external charging circuit and the module’s POWER pin while MC46 is off, processor controlled fast charging starts (see Chapter 3.5.2).
MC46 Hardware Interface Description DRAFT If your application is battery powered note that charging cannot be started while the engine is in Alarm mode, i.e. charging will not begin even though the charger connects to the charger input of the external charging circuit and the module’s POWER pin. See also Chapter 3.7 which summarizes the various options of changing the mode of operation. If your host application uses the SYNC pin to control a status LED as described in Chapter 3.12.2.
MC46 Hardware Interface Description DRAFT 3.3.2 Turn off MC46 To switch the module off the following procedures may be used: · Normal shutdown procedure: Software controlled by sending the AT^SMSO command over the serial application interface. See Chapter 3.3.2.1. · 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 3.3.2.3.
MC46 Hardware Interface Description DRAFT 3.3.2.2 Maximum number of turn-on / turn-off cycles Each time the module is shut down, data will be written from volatile memory to flash memory. The guaranteed maximum number of write cycles is limited to 100.000. 3.3.2.3 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.
MC46 Hardware Interface Description DRAFT 3.3.3 Automatic shutdown Automatic shutdown takes effect if · the MC46 board is exceeding the critical limits of overtemperature or undertemperature · the battery is exceeding the critical limits of overtemperature or undertemperature · undervoltage is detected The automatic shutdown procedure is equivalent to the power-down initiated with the AT^SMSO command, i.e. MC46 logs off from the network and the software enters a secure state avoiding loss of data.
MC46 Hardware Interface Description DRAFT Table 6: Temperature dependent behavior 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. ^SCTM_A: 0 Battery back to uncritical temperature range.
MC46 Hardware Interface Description DRAFT 3.3.3.4 Undervoltage shutdown if no battery NTC is present The undervoltage protection is also effective in applications, where no NTC connects to the BATT_TEMP terminal. Thus, you can take advantage of this feature even though the application handles the charging process or MC46 is fed by a fixed supply voltage. All you need to do is executing the write command AT^SBC= which automatically enables the presentation of URCs.
MC46 Hardware Interface Description DRAFT 3.5 Charging control MC46 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. MC46 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, MC46 needs to be powered from a Li-Ion battery pack, e.g. as specified in Table 8.
MC46 Hardware Interface Description DRAFT 3.5.1 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 MC46 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).
MC46 Hardware Interface Description DRAFT 3.5.1.1 Recommended battery pack The following battery pack has been especially designed for use with MC46 modules. Table 8: Specifications of XWODA battery pack Product name, type XWODA, Li-Ion, 3.6V, 800mAh Vendor Shenzhen Xwoda Electronic Co., Ltd Building C, Tongfukang Industrial Zone Shiyan Town, Bao’an District Shenzen P.R.China To place orders or obtain more information please contact: Contact: Waichard Tsui Phone: +86-755-27623789 ext.
MC46 Hardware Interface Description DRAFT 3.5.2 Implemented charging technique If the external charging circuit follows the recommendation of Figure 7, 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.
MC46 Hardware Interface Description DRAFT 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.
MC46 Hardware Interface Description DRAFT 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.
MC46 Hardware Interface Description DRAFT 3.6 Power saving SLEEP mode reduces the functionality of the MC46 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.
MC46 Hardware Interface Description DRAFT 3.6.3 CYCLIC SLEEP mode (AT+CFUN=5, 6, 7 and 8) The functionality levels AT+CFUN=5, AT+CFUN=6, AT+CFUN=7 and AT+CFUN=8 are referred to as CYCLIC SLEEP modes. The major benefit over the NON-CYCLIC SLEEP mode is that the serial interface is not permanently blocked and that packet switched calls may go on without terminating the selected CYCLIC SLEEP mode.
MC46 Hardware Interface Description DRAFT After the last character was sent or received the interface will remain active for another · 2 seconds, if AT+CFUN=5 or 7 or · 10 minutes, if AT+CFUN=6 or 8. In the pauses between listening to paging messages, while /CTS is high, the module resumes power saving and the AT interface is not accessible. See Figure 10 and Figure 11. Paging message Paging message 2.12 s /CTS Paging message 4.6 ms 4.6 ms 4.6 ms 4.6 ms 4.6 ms 4.
MC46 Hardware Interface Description DRAFT 3.6.5 Wake up MC46 from SLEEP mode A wake-up event is any event that switches off the SLEEP mode and causes MC46 to return to full functionality. In short, it takes MC46 back to AT+CFUN=1. Definitions of the state transitions described in Table 11: Yes = MC46 exits SLEEP mode. No = MC46 does not exit SLEEP mode.
MC46 Hardware Interface Description DRAFT 3.7 Summary of state transitions (except SLEEP mode) Table 12: State transitions of MC46 (except SLEEP mode) The table shows how to proceed from one mode to another (gray column = present mode, white columns = intended modes) Further mode èèè **) *) Normal mode Charge-only mode Charging in normal *)**) mode --- /IGT >100 ms at low level Connect charger to input of ext.
MC46 Hardware Interface Description DRAFT 3.8 RTC backup The internal Real Time Clock of MC46 is supplied from a separate voltage regulator in the power supply ASIC which is also active when MC46 is in POWER DOWN status. An alarm function is provided that allows to wake up MC46 without logging on to the GSM network. In addition, you can use the VDDLP pin on the board-to-board connector to backup the RTC from an external capacitor or a battery (rechargeable or non-chargeable).
MC46 Hardware Interface Description DRAFT 3.9 Serial interfaces MC46 offers two unbalanced, asynchronous serial interfaces conforming to ITU-T V.24 protocol DCE signaling. The electrical characteristics do not comply with ITU-T V.28. The significant levels are 0V (for low data bit or ON condition) and 2.65V (for high data bit or OFF condition). For electrical characteristics please refer to Table 38. The GSM engine is designed for use as a DCE.
MC46 Hardware Interface Description DRAFT 3.9.1 Features supported on first and second serial interface ASC0 · 8-wire serial interface · 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 calls, CSD calls, fax calls and GPRS services and for controlling the GSM engine with AT commands.
MC46 Hardware Interface Description DRAFT Table 14: DCE-DTE wiring of 2nd serial interface V.24 circuit DCE DTE Pin function Signal direction Pin function Signal direction 103 /TXD1 Input /TXD Output 104 /RXD1 Output /RXD Input 105 /RTS1 Input /RTS Output 106 /CTS1 Output /CTS Input MC46_HD_V02.8xb Page 50 of 98 21.08.
MC46 Hardware Interface Description DRAFT 3.10 Audio interfaces MC46 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.
MC46 Hardware Interface Description DRAFT When shipped from factory, all audio parameters of MC46 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.
MC46 Hardware Interface Description DRAFT 3.10.2 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.).
MC46 Hardware Interface Description DRAFT 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.
MC46 Hardware Interface Description DRAFT 3.11 SIM interface The baseband processor has an integrated SIM interface compatible with the ISO 7816 IC Card standard. This is wired to the host interface (board-to-board connector) in order to be connected to an external SIM card holder. Six pins on the board-to-board connector are reserved for the SIM interface. The CCIN pin serves to detect whether a tray (with SIM card) is present in the card holder.
MC46 Hardware Interface Description DRAFT 3.11.1 Requirements for using the CCIN pin SIM card is removed during operation. Therefore, the signal at the CCIN pin must go low before the SIM card contacts are mechanically detached from the SIM interface contacts. This shut-down procedure is particularly required to protect the SIM card as well as the SIM interface of MC46 from damage. An appropriate SIM card detect switch is required on the card holder.
MC46 Hardware Interface Description DRAFT 3.11.2 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 MC46 reference setup, see [5]). X503 is the designation used for the SIM card holder in [5].
MC46 Hardware Interface Description DRAFT 3.12 Control signals 3.12.1 Inputs Table 17: Input control signals of the MC46 module Signal Pin Pin status Function Remarks Ignition /IGT Falling edge Power up MC46 Left open or HiZ No operation Active low ³ 100ms (Open drain/collector driver to GND required in cellular device application). Note: If a charger and a battery is connected to the customer application the /IGT signal must be 1s minimum.
MC46 Hardware Interface Description DRAFT 3.12.2 Outputs 3.12.2.1 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 [1].
MC46 Hardware Interface Description DRAFT 3.12.2.2 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 [1]. When controlled from the SYNC pin the LED can display the functions listed in Table 19.
MC46 Hardware Interface Description DRAFT 3.12.2.3 Behavior of the /RING0 line (ASC0 interface only) The /RING0 line is available on the first serial interface ASC0 (see also chapter 3.9). The signal serves to indicate incoming calls and other types of URCs (Unsolicited Result Code). Although not mandatory for use in a host application, it is strongly suggested that you connect the /RING0 line to an interrupt line of your application.
MC46 Hardware Interface Description DRAFT Table 20: MC46 ring signal Function Pin Status Description Ring indication /RING0 0 Indicates an incoming call or URC. If in NON-CYCLIC SLEEP mode CFUN=0 or CYCLIC SLEEP mode CFUN=5 or 6, the module is caused to wake up to full functionality. If CFUN=7 or 8, power saving is resumed after URC transmission or end of call. 1 No operation MC46_HD_V02.8xb Page 62 of 98 21.08.
MC46 Hardware Interface Description DRAFT 4 Antenna interface The RF interface has an impedance of 50Ω. MC46 is capable of sustaining a total mismatch at the antenna connector or pad without any damage, even when transmitting at maximum RF power. The external antenna must be matched properly to achieve best performance regarding radiated power, DC-power consumption and harmonic suppression. Matching networks are not included on the MC46 PCB and should be placed in the host application.
MC46 Hardware Interface Description DRAFT The U.FL-R-SMT connector has been chosen as antenna reference point (ARP) for the Siemens reference equipment submitted to type approve MC46. All RF data specified throughout this manual are related to the ARP. For compliance with the test results of the Siemens type approval you are advised to give priority to the connector, rather than using the antenna pad. IMPORTANT: Both solutions can only be applied alternatively.
MC46 Hardware Interface Description DRAFT 4.1.1 Antenna pad The antenna can be soldered to the pad, or attached via contact springs. To provide a proper ground for the antenna, MC46 comes with a grounding pad located close to the antenna pad. The positions of both pads can be seen from Figure 28 and Figure 40. The grounding pad should be connected to the ground plane of the application.
MC46 Hardware Interface Description DRAFT 4.1.2 Hirose antenna connector MC46 uses an ultra-miniature SMT antenna connector supplied from Hirose Ltd. The product name is: U.FL-R-SMT The position of the antenna connector on the MC46 board can be seen in Figure 39. Figure 31: Mechanical dimensions of U.FL-R-SMT connector Table 22: Product specifications of U.
MC46 Hardware Interface Description DRAFT Table 23: Material and finish of U.FL-R-SMT connector and recommended plugs Part Material Finish Shell Phosphor bronze Silver plating Male center contact Brass Gold plating Female center contact Phosphor bronze Gold plating Insulator Plug: Receptacle: PBT LCP Black Beige Mating plugs and cables can be chosen from the Hirose U.FL Series. Examples are shown below and listed in Table 24.
MC46 Hardware Interface Description DRAFT 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 34 which shows the Hirose datasheet. Figure 34: Specifications of U.FL-LP-(V)-040(01) plug MC46_HD_V02.8xb Page 68 of 98 21.08.
MC46 Hardware Interface Description DRAFT Table 24: Ordering information for Hirose U.FL Series Item Part number HRS number Connector on MC46 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 MC46_HD_V02.
MC46 Hardware Interface Description DRAFT 5 Electrical, reliability and radio characteristics 5.1 Absolute maximum ratings Absolute maximum ratings for supply voltage and voltages on digital and analog pins of MC46 are listed in Table 25. Exceeding these values will cause permanent damage to MC46. The power supply shall be compliant with the SELV safety standard defined in EN60950. The supply current must be limited according to Table 25.
MC46 Hardware Interface Description DRAFT 5.3 Electrical specifications of the application interface Please note that the reference voltages listed in Table 27 are the values measured directly on the MC46 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 MC46 is a 50-pin double-row receptacle.
MC46 Hardware Interface Description DRAFT Table 27: Electrical description of application interface Function Signal name IO Signal form and level Comments Power supply BATT+ I VI = 3.2V 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.
MC46 Hardware Interface Description DRAFT Function Signal name IO Signal form and level Comments VDD Low Power VDDLP I/O RI =1kW VOmax ≈ 4.0V (output) Supplies the RTC with power via an external capacitor or buffer battery if no VBATT+ is applied. If unused keep pin open. VImin = 2.2V, VImax = 5.5V (input) IItyp = 10µA at BATT+ = 0V Mobile in POWER DOWN mode: VImin = 1.2V Ignition /IGT I RI ≈ 100kW, CI ≈ 1nF VILmax = 0.5V at Imax = -20µA VOpenmax = 2.
MC46 Hardware Interface Description DRAFT Function Signal name IO Signal form and level Comments I RI ≈ 100kW VILmax = 0.5V VIHmin = 2.15V at I = 20µA, VIHmax=3.3V at I = 30µA CCIN = high, SIM card holder closed (no card recognition) CCRST O RO ≈47W VOLmax = 0.25V at I = 1mA VOHmin = 2.3V at I = -1mA VOHmax = 2.73V CCIO IO RI ≈10kW VILmax = 0.5V VIHmin = 1.95V, VIHmax=3.3V Maximum cable length 200mm to SIM card holder.
MC46 Hardware Interface Description DRAFT Function Signal name IO Signal form and level Comments Digital audio interface RFSDAI I VOLmax = 0.2V at I = 1mA VOHmin = 2.35V at I = -1mA VOHmax = 2.73V If unused keep pins open. RXDDAI I SCLK I TFSDAI O TXDDAI O O EPP1 O EPN1 O MICP1 I MICN1 I MICP2 I MICN2 I Explanation of signal names: P = positive, N = negative Analog audio EPP2 interfaces EPN2 O VILmax = 0.5V VIHmin = 1.95V, VIHmax=3.3V IImax = 330µA at VIN = 3.
MC46 Hardware Interface Description DRAFT 5.4 Power supply ratings Table 28: Power supply ratings Parameter Description Conditions BATT+ Reference points on MC46: TP BATT+ and TP GND (see Figure 40). Supply voltage Min 3.2 Typ Max 4.1 Unit 4.5 V 400 mV Voltage must stay within the min/max values, including voltage drop, ripple, spikes.
MC46 Hardware Interface Description DRAFT 5.4.1 Current consumption during transmit burst A Smith chart shows the complex impedance plane. The Smith chart in Figure 36 illustrates the dependence between the typical peak current consumption of the application during a transmit burst and an impedance connected to the antenna reference point (ARP).
MC46 Hardware Interface Description DRAFT 5.5 Electrical characteristics of the voiceband part 5.5.1 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 29: Audio parameters adjustable by AT command Parameter Influence to Range Gain range Calculation inBbcGain MICP/MICN analog amplifier gain of baseband controller before ADC 0...7 0...
MC46 Hardware Interface Description DRAFT 5.5.2 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 if 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.
MC46 Hardware Interface Description DRAFT 5.5.3 Characteristics of audio modes The electrical characteristics of the voiceband part depend on the current audio mode set with the AT^SNFS command. Table 30: Voiceband characteristics (typical) Audio mode no.
MC46 Hardware Interface Description DRAFT 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. 5.5.4 Voiceband receive path Test conditions: · The values specified below were tested to 1kHz and 0dB gain stage, unless otherwise stated.
MC46 Hardware Interface Description DRAFT 5.5.5 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 32: Voiceband transmit path Parameter Min Typ Input voltage (peak to peak) Max Unit 1.
MC46 Hardware Interface Description DRAFT 5.6 Air interface Test conditions: All measurements have been performed at Tamb= 25°C, VBATT+ nom = 4.1V. The reference points used on MC46 are the BATT+ and GND contacts (test points are shown in Figure 40). Table 33: Air Interface Parameter Min Typ Max Unit Frequency range GSM 850 824.2 848.8 MHz Uplink (MS ® BTS) GSM 1800 1710 1785 MHz GSM 1900 1850 1910 MHz Frequency range GSM 850 869.2 893.
MC46 Hardware Interface Description DRAFT Table 34: Local oscillator and intermediate frequencies used by MC46 All frequencies in MHz GSM 850 PCN 1800 PCS 1900 MC46_HD_V02.8xb Frequency Band Channel Local Oscillator Intermediate Frequency TX 824.2 – 848.8 128 - 251 3612.8 – 3723.2 79 RX 869.2 – 893.8 128 - 251 3476.0 – 3575.2 0 TX 1710.2 – 1733.0 512 – 626 3580.4 – 3626.0 80 TX 1733.2 – 1759.8 627 – 760 3628.4 – 3681.6 81 TX 1760.0 – 1784.8 761 – 885 3680.0 – 3729.
MC46 Hardware Interface Description DRAFT 5.7 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 MC46 module.
MC46 Hardware Interface Description DRAFT 5.8 Reliability characteristics The test conditions stated below are an extract of the complete test specifications. Table 36: Summary of reliability test conditions Type of test Conditions Standard Vibration Frequency range: 10-20 Hz; acceleration: 3.
MC46 Hardware Interface Description DRAFT 6 Mechanics The following chapters describe the mechanical dimensions of MC46 and give recommendations for integrating MC46 into the host application. 6.1 Mechanical dimensions of MC46 Figure 38 shows the top view on MC46 and provides an overview of the mechanical dimensions of the board. For further details see Figure 39. Size: 53 +0.15 x 34 +0.15 x 3.5+0.3 mm Weight: 10g Figure 38: MC46 – top view MC46_HD_V02.8xb Page 87 of 98 21.08.
MC46 Hardware Interface Description DRAFT Board-to-board connector All dimensions in millimeter Figure 39: Mechanical dimensions of MC46 MC46_HD_V02.8xb Page 88 of 98 21.08.
MC46 Hardware Interface Description DRAFT Ø1 .1 Ground pad, e.g. for heatsink or connection to host device TP 402 14.42 4.75 0.00 0.00 15.50 26.90 TP GND 24.40 10.60 TP BATT+ Figure 40: MC46 bottom view MC46_HD_V02.8xb Page 89 of 98 21.08.
MC46 Hardware Interface Description DRAFT 6.2 Mounting MC46 onto the application platform There are many ways to properly install MC46 in the host device. An efficient approach is to mount the MC46 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. Screws must be inserted with the screw head on the bottom of the MC46 PCB. This is necessary to avoid contacting the shielding covers on top.
MC46 Hardware Interface Description DRAFT 6.3 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 MC46 PCB is type Hirose DF12C. Mating headers from Hirose are available in different stacking heights.
MC46 Hardware Interface Description DRAFT 6.3.1 Mechanical dimensions of the Hirose DF12 connector Figure 43: Mechanical dimensions of Hirose DF12 connector 6.3.2 Adapter cabling The board-to-board connection is primarily intended for direct contact between both connectors.
MC46 Hardware Interface Description DRAFT 6.4 Heat sinks and thermally conductive tapes Thermal management solutions vary largely according to the usage of the final product and the design of the host device. Therefore, the focus of this chapter is on a brief overview of standard heat sinks and thermally conductive tapes that have been tested with MC46. 6.4.
MC46 Hardware Interface Description DRAFT Table 39: Tested heat sinks and thermally conductive tapes and test results Manufacturer Product name Description Rth Website Temperature reduction Conductive tape positioned on Test condition: Thermally conductive tape T2022 combined with different heat sinks (material characteristics of T2022: adhesive on both sides, silicon free, 100µm, Rth > 0,1 K/W, manufacturer: Balkhausen) Fischerelektronik SK18 65mm x 37.5mm 3.75 K/W www.fischerelektronik.
MC46 Hardware Interface Description DRAFT 7 Reference Approval 7.1 Reference Equipment for Type Approval The Siemens reference setup that will be submitted to type approve MC46 consists of the following components: · Siemens MC46 cellular engine · Development Support Box (DSB45) · Flex cable (160 mm) from Hirose DF12C receptacle on MC46 to Hirose DF12 connector on DSB45. Please note that this cable is not included in the scope of delivery of DSB45.
MC46 Hardware Interface Description DRAFT 7.2 Compliance with FCC Rules and Regulations The FCC Equipment Authorization Certification for the MC46 reference application described in Chapter 7.1 will be listed under the FCC identifier QIPMC45, granted to Siemens AG. The MC46 reference application registered under the above identifier is certified to be in accordance with the following Rules and Regulations of the Federal Communications Commission (FCC).
MC46 Hardware Interface Description DRAFT 8 List of parts and accessories Table 40: List of parts and accessories Description Supplier Ordering information MC46 Siemens Siemens ordering number: L36880-N8320-A100 Siemens Car Kit Portable Siemens Siemens ordering number: L36880-N3015-A117 DSB45 Support Box Siemens Siemens ordering number: L36880-N8301-A100 BB35 Bootbox Siemens Siemens ordering number: L36880-N8102-A100-1 Votronic Handset VOTRONIC Votronic HH-SI-30.3/V1.
MC46 Hardware Interface Description DRAFT Table 41: 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.
