AC65/AC75 Siemens Cellular Engine Version: DocId: 01.002 AC65_AC75_HD_v01.
AC65/AC75 Hardware Interface Description s Document Name: AC65/AC75 Hardware Interface Description Version: 01.002 Date: 2006-10-30 DocId: AC65_AC75_HD_v01.002 Status Confidential / Released General Notes Product is deemed accepted by recipient and is provided without interface to recipient’s products. The documentation and/or product are provided for testing, evaluation, integration and information purposes.
AC65/AC75 Hardware Interface Description Contents s Contents 0 Document History.................................................................................................................................... 9 1 Introduction............................................................................................................................................ 12 1.1 Related Documents..................................................................................................................
AC65/AC75 Hardware Interface Description Contents 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 s 3.5.5 Charger Requirements .................................................................................................. 43 3.5.6 Implemented Charging Technique................................................................................. 43 3.5.7 Operating Modes during Charging................................................................................. 44 Power Saving ..............
Contents s 5.8 5.9 Air Interface ................................................................................................................................... 97 Electrostatic Discharge.................................................................................................................. 98 AC65/AC75 Hardware Interface Description 6 Mechanics ..............................................................................................................................................
AC65/AC75 Hardware Interface Description List of Tables s Tables Table 1: Table 2: Table 3: Table 4: Table 5: Table 6: Table 7: Table 8: Table 9: Table 10: Table 11: Table 12: Table 13: Table 14: Table 15: Table 16: Table 17: Table 18: Table 19: Table 20: Table 21: Table 22: Table 23: Table 24: Table 25: Table 26: Table 27: Table 28: Table 29: Table 30: Table 31: Table 32: Table 33: Table 34: Table 35: Table 36: Table 37: Table 38: Directives ..............................................................
AC65/AC75 Hardware Interface Description List of Figures s Figures Figure 1: Figure 2: Figure 3: Figure 4: Figure 5: Figure 6: Figure 7: Figure 8: Figure 9: Figure 10: Figure 11: Figure 12: Figure 13: Figure 14: Figure 15: Figure 16: Figure 17: Figure 18: Figure 19: Figure 20: Figure 21: Figure 22: Figure 23: Figure 24: Figure 25: Figure 26: Figure 27: Figure 28: Figure 29: Figure 30: Figure 31: Figure 32: Figure 33: Figure 34: Figure 35: Figure 36: Figure 37: Figure 38: Figure 39: Figure 40: Figure 41: F
Contents s Figure 47: Figure 48: Figure 49: Figure 50: AC65/AC75 sample application ................................................................................................ 107 Reference equipment for Type Approval .................................................................................. 108 Lithium Ion battery from VARTA ............................................................................................... 116 VARTA PoLiFlex® Lithium Polymer battery ............................
AC65/AC75 Hardware Interface Description 0 Document History 0 s Document History Preceding document: "AC65/AC75 Hardware Interface Description" Version 01.000 New document: "AC65/AC75 Hardware Interface Description" Version 01.002 Chapter What is new 3.3.4.2 Removed call to predefined phone number as reason for deferred shutdown. 3.5.4, 9.3 Added information related to specific types of batteries and specific vendors. 3.10 Added note in Figure 16 on availability of signal pins under Java.
AC65/AC75 Hardware Interface Description s Preceding document: "AC75 Hardware Interface Description" Version 00.251 New document: "AC65/AC75 Hardware Interface Description" Version 00.372 Chapter What is new Throughout document Added new product: AC65 module 1 Added AC65 and general statement on difference between AC65 and AC75. 1.3.1 Updated list of standards. Every portable mobile shall have an FCC Grant and IC Certificate of its own. 1.3.4 Added note on audio safety precautions. 3.
AC65/AC75 Hardware Interface Description s Chapter What is new 3.3.4.2, 3.3.4.3 Replaced resp. new sections on Deferred Shutdown at Extreme Temperature Conditions and Monitoring the Board Temperature of AC75. 3.4 Minor text change. 3.3.1.3, 3.5.7, 3.7 To change from Charge-only mode to Normal mode the IGT line must be pulled low for at least 1s and then released. High state of IGT lets AC75 enter Normal mode. 3.5 Replaced recommended polymer battery with new VARTA PoLiFlex® battery 3.5.7, 3.
AC65/AC75 Hardware Interface Description 1 Introduction 1 s Introduction This document applies to the following Siemens products: • • AC65 Module AC75 Module The document describes the hardware of the AC65 and AC75 modules, both designed to connect to a cellular device application and the air interface. It helps you quickly retrieve interface specifications, electrical and mechanical details and information on the requirements to be considered for integrating further components.
AC65/AC75 Hardware Interface Description 1.2 Terms and Abbreviations 1.2 s Terms and Abbreviations Abbreviation Description ADC Analog-to-Digital Converter AGC Automatic Gain Control ANSI American National Standards Institute ARFCN Absolute Radio Frequency Channel Number ARP Antenna Reference Point ASC0 / ASC1 Asynchronous Controller.
AC65/AC75 Hardware Interface Description 1.2 Terms and Abbreviations Abbreviation Description ESD Electrostatic Discharge ETS European Telecommunication Standard FCC Federal Communications Commission (U.S.
AC65/AC75 Hardware Interface Description 1.
AC65/AC75 Hardware Interface Description 1.3 Regulatory and Type Approval Information 1.3 s Regulatory and Type Approval Information 1.3.1 Directives and Standards AC65/AC75 has been designed to comply with the directives and standards listed below.
AC65/AC75 Hardware Interface Description 1.3 Regulatory and Type Approval Information s Table 3: Standards of European type approval GCF-CC V3.21.0 Global Certification Forum - Certification Criteria ETSI EN 301 489-1 V1.4.1 Candidate Harmonized European Standard (Telecommunications series) Electro Magnetic Compatibility and Radio spectrum Matters (ERM); Electro Magnetic Compatibility (EMC) standard for radio equipment and services; Part 1: Common Technical Requirements ETSI EN 301 489-7 V1.2.
AC65/AC75 Hardware Interface Description 1.3 Regulatory and Type Approval Information 1.3.3 s SELV Requirements The power supply connected to the AC65/AC75 module shall be in compliance with the SELV requirements defined in EN 60950-1. See also Section 5.1 for further detail. 1.3.4 Safety Precautions The following safety precautions must be observed during all phases of the operation, usage, service or repair of any cellular terminal or mobile incorporating AC65/AC75.
AC65/AC75 Hardware Interface Description 1.3 Regulatory and Type Approval Information s IMPORTANT! Cellular terminals or mobiles operate using radio signals and cellular networks. Because of this, connection cannot be guaranteed at all times under all conditions. Therefore, you should never rely solely upon any wireless device for essential communications, for example emergency calls.
AC65/AC75 Hardware Interface Description 2 Product Concept 2 Product Concept 2.
AC65/AC75 Hardware Interface Description 2.1 Key Features at a Glance Feature Implementation SMS Point-to-point MT and MO s Cell broadcast Text and PDU mode Storage: SIM card plus 25 SMS locations in mobile equipment Transmission of SMS alternatively over CSD or GPRS. Preferred mode can be user defined. Fax Group 3; Class 1 Audio Speech codecs: Half rate HR (ETS 06.20) Full rate FR (ETS 06.10) Enhanced full rate EFR (ETS 06.50/06.60/06.
AC65/AC75 Hardware Interface Description 2.1 Key Features at a Glance Feature s Implementation Interfaces 2 serial interfaces ASC0: 8-wire modem interface with status and control lines, unbalanced, asynchronous Fixed bit rates: 300 bps to 460,800 bps Autobauding: 1,200 bps to 460,800 bps RTS0/CTS0 and XON/XOFF flow control. Multiplex ability according to GSM 07.10 Multiplexer Protocol.
AC65/AC75 Hardware Interface Description 2.2 AC65/AC75 System Overview s Feature Implementation DAC output Digital-to-Analog Converter which can provide a PWM signal. Phonebook SIM and phone Evaluation kit DSB75 2.2 DSB75 Evaluation Board designed to test and type approve Siemens cellular engines and provide a sample configuration for application engineering. AC65/AC75 System Overview Figure 1: AC65/AC75 system overview AC65_AC75_HD_v01.
AC65/AC75 Hardware Interface Description 2.3 Circuit Concept 2.
AC65/AC75 Hardware Interface Description 3 Application Interface 3 s Application Interface AC65/AC75 is equipped with an 80-pin board-to-board connector that connects to the external application. The host interface incorporates several sub-interfaces described in the following sections: • • • • • • • • • • • Power supply - see Section 3.1 Charger interface – see Section 3.5 SIM interface - see Section 3.9 Serial interface ASC0 - see Section 3.10 Serial interface ASC1 - see Section 3.
AC65/AC75 Hardware Interface Description 3.1 Operating Modes 3.1 s Operating Modes The table below briefly summarizes the various operating modes referred to in the following chapters. Table 5: Overview of operating modes Normal operation GSM / GPRS SLEEP Various power save modes set with AT+CFUN command. 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.
AC65/AC75 Hardware Interface Description 3.2 Power Supply 3.2 s Power Supply AC65/AC75 needs to be connected to a power supply at the B2B connector (5 pins each BATT+ and GND). The power supply of AC65/AC75 has to be a single voltage source at BATT+. It must be able to provide the peak current during the uplink transmission. All the key functions for supplying power to the device are handled by the power management section of the analog controller.
s AC65/AC75 Hardware Interface Description 3.2 Power Supply 3.2.2 Measuring the Supply Voltage (VBATT+) The reference points for measuring the supply voltage VBATT+ on the module are BATT+ and GND, both accessible at a capacitor located close to the board-to-board connector of the module. Reference point BATT+ Reference point GND Figure 4: Position of the reference points BATT+ and GND 3.2.
AC65/AC75 Hardware Interface Description 3.3 Power-Up / Power-Down Scenarios 3.3 s Power-Up / Power-Down Scenarios In general, be sure not to turn on AC65/AC75 while it is beyond the safety limits of voltage and temperature stated in Section 5.1. AC65/AC75 would immediately switch off after having started and detected these inappropriate conditions. In extreme cases this can cause permanent damage to the module. 3.3.
s AC65/AC75 Hardware Interface Description 3.3 Power-Up / Power-Down Scenarios which shall be altered to AT\Q3 (RTS/CTS handshake). If the application design does not integrate RTS/CTS lines the host application shall wait at least for the "^SYSSTART" or "^SYSSTART AIRPLANE MODE" URC. However, if the URCs are neither used (due to autobauding) then the only way of checking the module’s ready state is polling. To do so, try to send characters (e.g. “at”) until the module is responding. See also Section 3.3.
s AC65/AC75 Hardware Interface Description 3.3 Power-Up / Power-Down Scenarios BATT+ tmin = >400ms HiZ IGT PWR_IND 120ms EMERG_RST For details on how to use EMERG_RST to reset applications or external devices see Section 3.3.1.6. VEXT TXD0/TXD1/RTS0/RST1/DTR0 (driven by the application) CTS0/CTS1/DSR0/DCD0 Undefined Interface pins Defined ca.
AC65/AC75 Hardware Interface Description 3.3 Power-Up / Power-Down Scenarios 3.3.1.2 s Configuring the IGT Line for Use as ON/OFF Switch The IGT line can be configured for use in two different switching modes: You can set the IGT line to switch on the module only, or to switch it on and off. The switching mode is determined by the parameter "MEShutdown/ OnIgnition" of the AT^SCFG command.
AC65/AC75 Hardware Interface Description 3.3 Power-Up / Power-Down Scenarios 3.3.1.4 s Reset AC65/AC75 via AT+CFUN Command To reset and restart the AC65/AC75 module use the command AT+CFUN. You can enter AT+CFUN=,1 or AT+CFUN=x,1, where x may be in the range from 0 to 9. See [1] for details. If configured to a fix baud rate (AT+IPR≠0), the module will send the URC "^SYSSTART" or "^SYSSTART AIRPLANE MODE" to notify that it is ready to operate.
s AC65/AC75 Hardware Interface Description 3.3 Power-Up / Power-Down Scenarios 3.3.2 Signal States after Startup Table 6 describes the various states each interface pin passes through after startup and during operation. As shown in Figure 5 and Figure 6 the pins are in undefined state while the module is initializing. Once the startup initialization has completed, i.e. when CTS is high and the software is running, all pins are in defined state.
s AC65/AC75 Hardware Interface Description 3.
s AC65/AC75 Hardware Interface Description 3.3 Power-Up / Power-Down Scenarios Be sure not to disconnect the supply voltage VBATT+ before the URC “^SHUTDOWN” has been issued and the PWR_IND signal has gone high. Otherwise you run the risk of losing data. Signal states during turn-off are shown in Figure 8. While AC65/AC75 is in Power-down mode the application interface is switched off and must not be fed from any other source.
AC65/AC75 Hardware Interface Description 3.3 Power-Up / Power-Down Scenarios 3.3.3.3 s Turn on/off AC65/AC75 Applications with Integrated USB In a Windows environment, the USB COM port emulation causes the USB port of AC65/AC75 to appear as a virtual COM port (VCOM port). The VCOM port emulation is only present when Windows can communicate with the module, and is lost when the module shuts down.
AC65/AC75 Hardware Interface Description 3.3 Power-Up / Power-Down Scenarios s The maximum temperature ratings are stated in Section 5.2. Refer to Table 7 for the associated URCs. Table 7: Temperature dependent behavior Sending temperature alert (2min after AC65/AC75 start-up, otherwise only if URC presentation enabled) ^SCTM_A: 1 Caution: Battery close to overtemperature limit. ^SCTM_B: 1 Caution: Bboard close to overtemperature limit. ^SCTM_A: -1 Caution: Battery close to undertemperature limit.
AC65/AC75 Hardware Interface Description 3.3 Power-Up / Power-Down Scenarios 3.3.4.4 s Undervoltage Shutdown if Battery NTC is Present In applications where the module’s charging technique is used and an NTC is connected to the BATT_TEMP terminal, the software constantly monitors the applied voltage. If the measured battery voltage is no more sufficient to set up a call the following URC will be presented: ^SBC: Undervoltage.
AC65/AC75 Hardware Interface Description 3.4 Automatic EGPRS/GPRS Multislot Class Change 3.4 s Automatic EGPRS/GPRS Multislot Class Change Temperature control is also effective for operation in EGPRS Multislot Class 10 (AC75 only), GPRS Multislot Class 10 and GPRS Multislot Class 12. If the board temperature rises close to the limit specified for normal operation (see Section 5.
AC65/AC75 Hardware Interface Description 3.5 Charging Control 3.5.3 s Battery Pack Requirements The charging algorithm has been optimized for rechargeable Lithium batteries that meet the characteristics listed below and in Table 8. It is recommended that the battery pack you want to integrate into your AC65/AC75 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.
AC65/AC75 Hardware Interface Description 3.5 Charging Control s Table 8: Specifications of battery packs suitable for use with AC65/AC75 Battery type Rechargeable Lithium Ion or Lithium Polymer battery Nominal voltage 3.6V / 3.7V Capacity > 500mAh NTC 10kΩ ± 5% @ 25°C approx. 5kΩ @ 45°C approx. 26.2kΩ @ 0°C B value range: B (25/85)=3423K to B =3435K ± 3% Overcharge detection voltage 4.325 ± 0.025V Overdischarge detection voltage 2.4V Overdischarge release voltage 2.
AC65/AC75 Hardware Interface Description 3.5 Charging Control 3.5.5 s Charger Requirements For using the implemented charging algorithm and the reference charging circuit recommended in [5] and in Figure 47, the charger has to meet the following requirements: Output voltage: 5.2Volts ±0.2V (stabilized voltage) Output current: 500mA Chargers with a higher output current are acceptable, but please consider that only 500mA will be applied when a 0.
AC65/AC75 Hardware Interface Description 3.5 Charging Control 3.5.7 s Operating Modes during Charging Of course, the battery can be charged regardless of the engine's operating mode. When the GSM module is in Normal mode (SLEEP, IDLE, TALK, GPRS IDLE or GPRS DATA mode), it remains operational while charging is in progress (provided that sufficient voltage is applied). The charging process during the Normal mode is referred to as Charge mode.
s AC65/AC75 Hardware Interface Description 3.5 Charging Control Table 10: Comparison Charge-only and Charge mode Charge mode How to activate mode Description of mode Connect charger to charger input of host application charging circuit and module’s VCHARGE pin while AC65/AC75 is • • • • operating, e.g. in IDLE or TALK mode in SLEEP mode Battery can be charged while GSM module remains operational and registered to the GSM network. In IDLE and TALK mode, the serial interfaces are accessible.
s AC65/AC75 Hardware Interface Description 3.6 Power Saving 3.6 Power Saving Intended for power saving, SLEEP mode reduces the functionality of the AC65/AC75 to a minimum and thus minimizes the current consumption. Settings can be made using the AT+CFUN command. For details see [1]. SLEEP mode falls in two categories: • • NON-CYCLIC SLEEP mode: AT+CFUN = 0 CYCLIC SLEEP modes, AT+CFUN = 7 or 9. The functionality level AT+CFUN=1 is where power saving is switched off. This is the default after startup.
s AC65/AC75 Hardware Interface Description 3.6 Power Saving 3.6.2 Timing of the CTSx Signal in CYCLIC SLEEP Mode 7 Figure 11 illustrates the CTSx signal timing in CYCLIC SLEEP mode 7 (CFUN=7). Beginning of power saving CTSx 0.9...2.7 s 2s st 1 character 0.9...2.7 s Last character AT interface disabled AT interface enabled Figure 11: Timing of CTSx signal (if CFUN= 7) With regard to programming or using timeouts, the UART must take the varying CTS inactivity periods into account. 3.6.
s AC65/AC75 Hardware Interface Description 3.7 Summary of State Transitions (Except SLEEP Mode) 3.7 Summary of State Transitions (Except SLEEP Mode) The following table shows how to proceed from one mode to another (grey column = present mode, white columns = intended modes).
AC65/AC75 Hardware Interface Description 3.8 RTC Backup 3.8 s RTC Backup The internal Real Time Clock of AC65/AC75 is supplied from a separate voltage regulator in the analog controller which is also active when AC65/AC75 is in POWER DOWN status. An alarm function is provided that allows to wake up AC65/AC75 to Airplane mode without logging on to the GSM network.
AC65/AC75 Hardware Interface Description 3.9 SIM Interface 3.9 s 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 SIM interface supports 3V and 1.8V SIM cards.
AC65/AC75 Hardware Interface Description 3.10 Serial Interface ASC0 3.10 s Serial Interface ASC0 AC65/AC75 offers an 8-wire unbalanced, asynchronous modem interface ASC0 conforming to ITU-T V.24 protocol DCE signalling. The electrical characteristics do not comply with ITU-T V.28. The significant levels are 0V (for low data bit or active state) and 2.9V (for high data bit or inactive state). For electrical characteristics please refer to Table 26. AC65/AC75 is designed for use as a DCE.
s AC65/AC75 Hardware Interface Description 3.11 Serial Interface ASC1 Table 13: DCE-DTE wiring of ASC0 V.24 circuit DCE DTE Pin function Signal direction Pin function Signal direction 103 TXD0 Input TXD Output 104 RXD0 Output RXD Input 105 RTS0 Input RTS Output 106 CTS0 Output CTS Input 108/2 DTR0 Input DTR Output 107 DSR0 Output DSR Input 109 DCD0 Output DCD Input 125 RING0 Output RING Input 3.
s AC65/AC75 Hardware Interface Description 3.12 USB Interface Table 14: DCE-DTE wiring of ASC1 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 3.12 USB Interface AC65/AC75 supports a USB 2.0 Full Speed (12Mbit/s) device interface. It can be operated on a USB 2.0 Full Speed or High Speed root hub (a PC host), but not on a generic USB 2.
AC65/AC75 Hardware Interface Description 3.13 I2C Interface 3.13 s I2C Interface I2C is a serial, 8-bit oriented data transfer bus for bit rates up to 400kbps in Fast mode. It consists of two lines, the serial data line I2CDAT and the serial clock line I2CCLK. The AC65/AC75 module acts as a single master device, e.g. the clock I2CCLK is driven by module. I2CDAT is a bi-directional line.
AC65/AC75 Hardware Interface Description 3.14 SPI Interface 3.14 s SPI Interface The SPI (serial peripheral interface) is a synchronous serial interface for control and data transfer between the AC65/AC75 module and the connected application. Only one application can be connected to the module’s SPI. The interface supports transmission rates up to 6.5Mbit/s. It consists of four lines, the two data lines SPIDI/ SPIDO, the clock line SPICLK and the chip select line SPICS.
AC65/AC75 Hardware Interface Description 3.14 SPI Interface s Figure 22: Characteristics of SPI modes AC65_AC75_HD_v01.
AC65/AC75 Hardware Interface Description 3.15 Audio Interfaces 3.15 s Audio Interfaces AC65/AC75 comprises three audio interfaces available on the board-to-board connector: • • Two analog audio interfaces, both with balanced or single-ended inputs/outputs. Serial digital audio interface (DAI) designed for PCM (Pulse Code Modulation). This means you can connect up to three different audio devices, although only one interface can be operated at a time.
AC65/AC75 Hardware Interface Description 3.15 Audio Interfaces 3.15.1 s 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.
s AC65/AC75 Hardware Interface Description 3.15 Audio Interfaces 3.15.2.1 Single-ended Microphone Input Figure 24 as well as Figure 47 show an example of how to integrate a single-ended microphone input. RA = typ. 2k RB = typ. 5k RVMIC = typ. 470Ohm Ck = typ. 100nF CF = typ. 22µF VMIC = typ. 2.5V Vbias = 1.0V … 1.6V, typ. 1.5V Figure 24: Single ended microphone input RA has to be chosen so that the DC voltage across the microphone falls into the bias voltage range of 1.0V to 1.
s AC65/AC75 Hardware Interface Description 3.15 Audio Interfaces 3.15.2.2 Differential Microphone Input Figure 25 shows a differential solution for connecting an electret microphone. RA = typ. 1k RVMIC = 470Ohm CK = typ. 100nF CF = typ. 22µF VMIC = typ. 2.5V Vbias = 1.0V … 1.6V, typ. 1.5V Figure 25: Differential microphone input The advantage of this circuit is that it can be used if the application involves longer lines between microphone and module.
s AC65/AC75 Hardware Interface Description 3.15 Audio Interfaces 3.15.2.3 Line Input Configuration with OpAmp Figure 26 shows an example of how to connect an opamp into the microphone circuit. RA = typ. 47k RVMIC = 470Ohm Ck = typ. 100nF CF = typ. 22µF VMIC = typ. 2.5V Vbias = typ. ½ VMIC = 1.25V Figure 26: Line input configuration with OpAmp The AC source (e.g. an opamp) and its reference potential have to be AC coupled to the MICPx resp. MICNx input terminals.
s AC65/AC75 Hardware Interface Description 3.15 Audio Interfaces 3.15.3 Loudspeaker Circuit The GSM module comprises two analog speaker outputs: EP1 and EP2. Output EP1 is able to drive a load of 8Ohms while the output EP2 can drive a load of 32Ohms. Each interface can be connected in differential and in single ended configuration. Figure 27 shows an example of a differential loudspeaker configuration. Loudspeaker impedance EPP1/EPN1 ZL = typ. 8Ohm EPP2/EPN2 ZL = typ.
s AC65/AC75 Hardware Interface Description 3.15 Audio Interfaces In all configurations the PCM interface has the following common features: • • • • • 16 Bit linear 8kHz sample rate the most significant bit MSB is transferred first 125µs frame duration common frame sync signal for transmit and receive Table 16 shows the assignment of the DAI0...6 pins to the PCM interface signals.
AC65/AC75 Hardware Interface Description 3.15 Audio Interfaces s The timing of a PCM short frame is shown in Figure 29. The 16-bit TXDAI and RXDAI data are transferred simultaneously in both directions during the first 16 clock cycles after the frame sync pulse. The duration of a frame sync pulse is one BITCLK period, starting at the rising edge of BITCLK. TXDAI data is shifted out at the next rising edge of BITCLK. RXDAI data (i.e.
AC65/AC75 Hardware Interface Description 3.15 Audio Interfaces 3.15.4.2 s Slave Mode In slave mode the PCM interface is controlled by an external bit clock and an external frame sync signal applied to the BCLKIN and FSIN pins and delivered either by the connected codec or another source. The bit clock frequency has to be in the range of 256kHz -125ppm to 512kHz +125ppm.
AC65/AC75 Hardware Interface Description 3.15 Audio Interfaces s The following figures show the slave short and long frame timings. Because these are edge controlled, frame sync signals may deviate from the ideally form as shown with the dotted lines. Figure 32: Slave PCM Timing, Short Frame selected Figure 33: Slave PCM Timing, Long Frame selected AC65_AC75_HD_v01.
AC65/AC75 Hardware Interface Description 3.16 GPIO Interface 3.16 s GPIO Interface The AC65/AC75 has 10 GPIOs for external hardware devices. Each GPIO can be configured for use as input or output. All settings are AT command controlled. The GPIO related AT commands are the following: AT^SPIO, AT^SCPIN, AT^SCPOL, AT^SCPORT, AT^SDPORT, AT^SGIO, AT^SSIO. A detailed description can be found in [1]. 3.16.
AC65/AC75 Hardware Interface Description 3.17 Control Signals 3.17 3.17.1 s Control Signals Synchronization Signal The synchronization signal serves to indicate growing power consumption during the transmit burst. The signal is generated by the SYNC pin. Please note that this pin can adopt three different operating modes which you can select by using the AT^SSYNC command: the mode AT^SSYNC=0 described below, and the two LED modes AT^SSYNC=1 or AT^SSYNC=2 described in [1] and Section 3.17.2.
AC65/AC75 Hardware Interface Description 3.17 Control Signals 3.17.2 s Using the SYNC Pin to Control a Status LED As an alternative to generating the synchronization signal, the SYNC pin can be configured to drive a status LED that indicates different operating modes of the AC65/AC75 module. To take advantage of this function the LED mode must be activated with the AT^SSYNC command and the LED must be connected to the host application.
s AC65/AC75 Hardware Interface Description 3.17 Control Signals 3.17.3 Behavior of the RING0 Line (ASC0 Interface only) The RING0 line is available on the first serial interface ASC0 (see also Section 3.10). 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.
s AC65/AC75 Hardware Interface Description 4 Antenna Interface 4 Antenna Interface The RF interface has an impedance of 50Ω. AC65/AC75 is capable of sustaining a total mismatch at the antenna connector without any damage, even when transmitting at maximum RF power. The external antenna must be matched properly to achieve best performance regarding radiated power, DCpower consumption, modulation accuracy and harmonic suppression.
s AC65/AC75 Hardware Interface Description 4.1 Antenna Diagnostic 4.1 Antenna Diagnostic The antenna diagnostic allows the customer to check the presence and the connection status of the antenna by using the AT^SAD command. A description of the AT^SAD command can be found in [1]. To properly detect the antenna and verify its connection status the antenna feed point must have a DC resistance RANT of 9kΩ (±3kΩ). Any lower or higher resistance from 1kΩ to 6kΩ or 12kΩ to 40kΩ gives an undefined result.
AC65/AC75 Hardware Interface Description 4.2 Antenna Connector 4.2 s Antenna Connector AC65/AC75 uses a subminiature coaxial antenna connector type SMP MIL-Std 348-A supplied from Rosenberger. Table 19: Product specifications of Rosenberger SMP connector Item Specification Conditions Material and finish Center contact Brass 0.8 µm gold plating over 2-4 µm NiP plating Outer contact Brass 0.
AC65/AC75 Hardware Interface Description 4.2 Antenna Connector s Figure 39: Datasheet of Rosenberger SMP MIL-Std 348-A connector AC65_AC75_HD_v01.
s AC65/AC75 Hardware Interface Description 5 Electrical, Reliability and Radio Characteristics 5 Electrical, Reliability and Radio Characteristics 5.1 Absolute Maximum Ratings The absolute maximum ratings stated in Table 20 are stress ratings under any conditions. Stresses beyond any of these limits will cause permanent damage to AC65/AC75. The power supply connected to the AC65/AC75 module shall be compliant with the SELV requirements defined in EN60950.
s AC65/AC75 Hardware Interface Description 5.2 Operating Temperatures 5.2 Operating Temperatures Table 21: Board temperature Parameter Min Operating temperature range Typ Max Unit +85 °C --- +93 °C --- +60 -30 1 Automatic shutdown Temperature measured on AC65/AC75 board -30 -20 Temperature measured at battery NTC 1. Due to temperature measurement uncertainty, a tolerance on the stated shutdown thresholds may occur.
s AC65/AC75 Hardware Interface Description 5.3 Storage Conditions 5.3 Storage Conditions The conditions stated below are only valid for modules in their original packed state in weather protected, nontemperature-controlled storage locations. Normal storage time under these conditions is 12 months maximum. Table 24: Storage conditions Type Condition Unit Reference Air temperature: Low -40 °C ETS 300 019-2-1: T1.
s AC65/AC75 Hardware Interface Description 5.4 Reliability Characteristics 5.4 Reliability Characteristics The test conditions stated below are an extract of the complete test specifications. Table 25: Summary of reliability test conditions Type of test Conditions Standard Cold temperature storage -40°C; 48h IEC 60068-2-1 Ab Dry heat storage +80°C/96h, <50% humidity EN 60068-2-2 Bd Climatic test +65/-10°C; 80-96% rel.
s AC65/AC75 Hardware Interface Description 5.4 Reliability Characteristics Table 25: Summary of reliability test conditions Type of test Conditions Standard Sinus , 10-20Hz; 20-500Hz; 5g; 3,1mm IEC 60068-2-6 2h per axe; 3 axes EIA/TIA 571 §4.1.1.2 10-12Hz; 12-150Hz; 0,02g²/Hz; -3dB/oct.
s AC65/AC75 Hardware Interface Description 5.5 Pin Assignment and Signal Description 5.5 Pin Assignment and Signal Description The Molex board-to-board connector on AC65/AC75 is an 80-pin double-row receptacle. The position of the board-to-board connector can be seen in Figure 42 that shows the top view of AC65/AC75.
s AC65/AC75 Hardware Interface Description 5.5 Pin Assignment and Signal Description Please note that the reference voltages listed in Table 26 are the values measured directly on the AC65/AC75 module. They do not apply to the accessories connected. Table 26: Signal description Function Signal name IO Signal form and level Comment Power supply BATT+ I VImax = 4.5V Five pins of BATT+ and GND must be connected in parallel for supply purposes because higher peak currents may occur. VItyp = 3.
s AC65/AC75 Hardware Interface Description 5.5 Pin Assignment and Signal Description Table 26: Signal description Function Signal name IO Signal form and level Comment Power indicator PWR_IND O VIHmax = 10V PWR_IND (Power Indicator) notifies the module’s on/off state. VOLmax = 0.4V at Imax = 2mA PWR_IND is an open collector that needs to be connected to an external pull-up resistor. Low state of the open collector indicates that the module is on.
s AC65/AC75 Hardware Interface Description 5.5 Pin Assignment and Signal Description Table 26: Signal description Function Signal name Synchroni- SYNC zation IO Signal form and level Comment O VOLmax = 0.3V at I = 0.1mA There are two alternative options for using the SYNC pin: VOHmin = 2.3V at I = -0.1mA VOHmax = 3.05V n Tx = n x 577µs impulse each 4.616ms, with 180µs forward time. a) Indicating increased current consumption during uplink transmission burst.
s AC65/AC75 Hardware Interface Description 5.5 Pin Assignment and Signal Description Table 26: Signal description Function Signal name IO Signal form and level Comment SIM interface specified for use with 3V SIM card CCIN I RI ≈ 100kΩ VILmax = 0.6V at I = -25µA VIHmin = 2.1V at I = -10µA VOmax = 3.05V CCIN = Low, SIM card holder closed CCRST O RO ≈ 47Ω VOLmax = 0.25V at I = +1mA VOHmin = 2.5V at I = -0.5mA VOHmax = 2.95V Maximum cable length or copper track 100mm to SIM card holder.
s AC65/AC75 Hardware Interface Description 5.5 Pin Assignment and Signal Description Table 26: Signal description Function Signal name IO Signal form and level Comment SIM interface specified for use with 1.8V SIM card CCIN I RI ≈ 100kΩ VILmax = 0.6V at I = -25µA VIHmin = 2.1V at I = -10µA VOmax = 3.05V CCIN = Low, SIM card holder closed CCRST O RO ≈ 47Ω VOLmax = 0.25V at I = +1mA VOHmin = 1.45V at I = -0.5mA VOHmax = 1.90V Maximum cable length or copper track 100mm to SIM card holder.
s AC65/AC75 Hardware Interface Description 5.5 Pin Assignment and Signal Description Table 26: Signal description Function Signal name IO Signal form and level Comment USB VUSB_IN I VINmin = 4.0V VINmax = 5.25V USB_DN I/O Differential Output Crossover voltage Range VCRSmin = 1.5V, VCRSmax = 2.0V All electrical characteristics according to USB Implementers’ Forum, USB 2.0 Full Speed Specification. Without Java: USB port Line to GND: VOHmax = 3.6V VOHtyp = 3.2V VOHmin = 3.0V at I=-0.
s AC65/AC75 Hardware Interface Description 5.5 Pin Assignment and Signal Description Table 26: Signal description Function Signal name IO Signal form and level Comment Analog Audio interface VMIC O VOmin = 2.4V Microphone supply for customer feeding circuits VOtyp = 2.5V VOmax = 2.6V Imax = 2mA EPP2 O EPN2 O 3.0Vpp differential typical @ 0dBm0 The audio output can directly operate a 32-Ohm-loudspeaker. 4.2Vpp differential maximal @ If unused keep pins open. 3.
s AC65/AC75 Hardware Interface Description 5.6 Power Supply Ratings 5.6 Power Supply Ratings Table 27: Power supply ratings Parameter Description Conditions Min Typ Max Unit BATT+ Supply voltage Directly measured at reference point TP 3.3 BATT+ and TP GND, see Section 3.2.2. 3.8 4.5 V 400 mV @ f<200kHz 50 mV @ f>200kHz 2 mV Voltage must stay within the min/max values, including voltage drop, ripple, spikes.
s AC65/AC75 Hardware Interface Description 5.6 Power Supply Ratings Table 28: Current consumption during Tx burst for GSM 850MHz and GSM 900MHz Mode GSM call GPRS Class 8 GPRS Class10 GPRS Class 12 EGPRS Class 8 EGPRS Class 10 Timeslot configuration 1Tx / 1Rx 1Tx / 4Rx 2Tx / 3Rx 4Tx / 1Rx 1Tx / 4Rx 2Tx / 3Rx RF power nominal 2W (33dBm) 2W (33dBm) 2W (33dBm) 1W (30dBm) 1W (30dBm) 0.5W (27dBm) 0.5W (27dBm) 0.5W (27dBm) 0.
s AC65/AC75 Hardware Interface Description 5.6 Power Supply Ratings Table 29: Current consumption during Tx burst for GSM 1800MHz and GSM 1900MHz Mode GSM call GPRS Class 8 GPRS Class10 GPRS Class 12 EGPRS Class 8 EGPRS Class 10 Timeslot configuration 1Tx / 1Rx 1Tx / 4Rx 2Tx / 3Rx 4Tx / 1Rx 1Tx / 4Rx 2Tx / 3Rx RF power nominal 1W (30dBm) 1W (30dBm) 1W (30dBm) 0.5W (27dBm) 0.5W (27dBm) 0.25W (24dBm) 0.4W (26dBm) 0.4W (26dBm) 0.2W (23dBm) = 1 ...
s AC65/AC75 Hardware Interface Description 5.7 Electrical Characteristics of the Voiceband Part 5.7 Electrical Characteristics of the Voiceband Part 5.7.1 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.
AC65/AC75 Hardware Interface Description 5.7 Electrical Characteristics of the Voiceband Part 5.7.2 s Audio Programming Mode The audio programming model shows how the signal path can be influenced by varying the AT command parameters. The parameters inBbcGain and inCalibrate can be set with AT^SNFI. All the other parameters are adjusted with AT^SNFO. Figure 41: Audio programming model AC65_AC75_HD_v01.
s AC65/AC75 Hardware Interface Description 5.7 Electrical Characteristics of the Voiceband Part 5.7.3 Characteristics of Audio Modes The electrical characteristics of the voiceband part depend on the current audio mode set with the AT^SNFS command. All values are noted for default gains e.g. all parameters of AT^SNFI and AT^SNFO are left unchanged. Table 31: Voiceband characteristics (typical) Audio mode no.
s AC65/AC75 Hardware Interface Description 5.7 Electrical Characteristics of the Voiceband Part 5.7.4 Voiceband Receive Path Test conditions: • • The values specified below were tested to 1kHz with default settings in audio mode 5, unless otherwise stated. Default audio mode settings are: AT^SAIC=2,1,1,0,0,0 for EPP1 to EPN1 and AT^SAIC=2,2,2,0,0,0 for EPP2 to EPN2, inBbcGain=0, inCalibrate=32767, outBbcGain=0, OutCalibrate=16384 (volume=4) or OutCalibrate=11585 (volume=3), sideTone=0.
s AC65/AC75 Hardware Interface Description 5.7 Electrical Characteristics of the Voiceband Part Table 32: Voiceband receive path Parameter Min Frequency Response 0Hz - 100Hz 200Hz 300Hz - 3350Hz 3400Hz 4000Hz ≥4400Hz 1. 2. 3. 4. Typ Max Unit -34 dB Test condition / remark 4 -1.1 0.1 -0.2 -0.7 -39 -75 Full scale of EPP2/EPN2 is lower than full scale of EPP1/EPN1 but the default gain is the same. 3.14dBm0 will lead to clipping if the default gain is used.
s AC65/AC75 Hardware Interface Description 5.7 Electrical Characteristics of the Voiceband Part Table 33: Voiceband transmit path Parameter Frequency response Min 0Hz - 100Hz 200Hz 300Hz - 3350Hz 3400Hz 4000Hz ≥4400Hz 1. Typ Max Unit -34 dB Test condition / Remark 1 -1.1 0.1 -0.2 -0.7 -39 -75 This is the frequency response from a highpass and lowpass filter combination in the DAC of the baseband chip set. If the PCM interface is used, this filter is not involved in the audio path.
s AC65/AC75 Hardware Interface Description 5.8 Air Interface 5.8 Air Interface Test conditions: All measurements have been performed at Tamb= 25×C, VBATT+ nom = 4.0V. The reference points used on AC65/AC75 are the BATT+ and GND contacts (test points are shown in Figure 4).
s AC65/AC75 Hardware Interface Description 5.9 Electrostatic Discharge 5.9 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 AC65/AC75 module.
s AC65/AC75 Hardware Interface Description 6 Mechanics 6 Mechanics 6.1 Mechanical Dimensions of AC65/AC75 Figure 42 shows the top view of AC65/AC75 and provides an overview of the board's mechanical dimensions. For further details see Figure 43. Length: 55.00mm Width: 33.90mm Height: 3.15mm Pin1 Pin80 Figure 42: AC65/AC75– top view AC65_AC75_HD_v01.
s AC65/AC75 Hardware Interface Description 6.1 Mechanical Dimensions of AC65/AC75 Figure 43: Dimensions of AC65/AC75 (all dimensions in mm) AC65_AC75_HD_v01.
AC65/AC75 Hardware Interface Description 6.2 Mounting AC65/AC75 to the Application Platform 6.2 s Mounting AC65/AC75 to the Application Platform There are many ways to properly install AC65/AC75 in the host device. An efficient approach is to mount the AC65/AC75 PCB to a frame, plate, rack or chassis. Fasteners can be M2 screws plus suitable washers, circuit board spacers, or customized screws, clamps, or brackets.
AC65/AC75 Hardware Interface Description 6.3 Board-to-Board Application Connector 6.3 s Board-to-Board Application Connector This section provides the specifications of the 80-pin board-to-board connector used to connect AC65/AC75 to the external application. Connector mounted on the AC65/AC75 module: Type: 52991-0808 SlimStack Receptacle 80 pins, 0.50mm pitch, for stacking heights from 3.0 to 4.0mm, see Figure 45 for details. Supplier: Molex, http//www.molex.
AC65/AC75 Hardware Interface Description 6.3 Board-to-Board Application Connector s Mating connector types for the customer's application offered by Molex: Figure 44: Mating board-to-board connector 53748-0808 on application • • 53748-0808 SlimStack Plug, 3mm stacking height, see Figure 46 for details. 53916-0808 SlimStack Plug, 4mm stacking height AC65_AC75_HD_v01.
AC65/AC75 Hardware Interface Description 6.3 Board-to-Board Application Connector s Figure 45: Molex board-to-board connector 52991-0808 on AC65/AC75 AC65_AC75_HD_v01.
AC65/AC75 Hardware Interface Description 6.3 Board-to-Board Application Connector s Figure 46: Mating board-to-board connector 53748-0808 on application AC65_AC75_HD_v01.
AC65/AC75 Hardware Interface Description 7 Sample Application 7 s Sample Application Figure 47 shows a typical example of how to integrate a AC65/AC75 module with a Java application. Usage of the various host interfaces depends on the desired features of the application. Audio interface 1 demonstrates the balanced connection of microphone and earpiece. This solution is particularly well suited for internal transducers.
s AC65/AC75 Hardware Interface Description Figure 47: AC65/AC75 sample application AC65_AC75_HD_v01.
s AC65/AC75 Hardware Interface Description 8 Reference Approval 8 Reference Approval 8.1 Reference Equipment for Type Approval The Siemens reference setup submitted to type approve AC65/AC75 consists of the following components: • • • • • • • Siemens AC65/AC75 cellular engine Development Support Box DSB75 SIM card reader integrated on DSB75 U.FL-R-SMT antenna connector and U.FL-LP antenna cable Handset type Votronic HH-SI-30.3/V1.
AC65/AC75 Hardware Interface Description 8.2 Compliance with FCC Rules and Regulations 8.2 s Compliance with FCC Rules and Regulations The Equipment Authorization Certification for the Siemens reference application described in Section 8.
AC65/AC75 Hardware Interface Description 9 Appendix 9 Appendix 9.
AC65/AC75 Hardware Interface Description 9.1 List of Parts and Accessories s Table 38: Molex sales contacts (subject to change) Molex Molex Deutschland GmbH American Headquarters For further information please click: Felix-Wankel-Str. 11 4078 Heilbronn-Biberach Germany Lisle, Illinois 60532 U.S.A. http://www.molex.com Phone: +49-7066-9555 0 Fax: +49-7066-9555 29 Email: mxgermany@molex.com Molex China Distributors Beijing, Room 1319, Tower B, COFCO Plaza No.
AC65/AC75 Hardware Interface Description 9.2 Fasteners and Fixings for Electronic Equipment 9.2 s Fasteners and Fixings for Electronic Equipment This section provides a list of suppliers and manufacturers offering fasteners and fixings for electronic equipment and PCB mounting. The content of this section is designed to offer basic guidance to various mounting solutions with no warranty on the accuracy and sufficiency of the information supplied.
AC65/AC75 Hardware Interface Description 9.2 Fasteners and Fixings for Electronic Equipment Article number: 07.51.403 s Insulating Spacer for M2 Self-gripping1 Length 3.0mm Material Polyamide 6.6 Surface Black Internal diameter 2.2mm External diameter 4.0mm Flammability rating UL94-HB 1. 2 spacers are delivered with DSB75 Support Board Article number: 05.11.209 Threaded Stud M2.5 - M2 Type E / External thread at both ends Length 3.
AC65/AC75 Hardware Interface Description 9.2 Fasteners and Fixings for Electronic Equipment Article number: 01.14.131 s Screw M21 DIN 84 - ISO 1207 Length 8.0mm Material Steel 4.8 Surface Zinced A2K Thread M2 Head diameter D = 3.8mm Head height 1.30mm Type Slotted cheese head screw 1. 2 screws are delivered with DSB75 Support Board Article number: 01.14.141 Screw M2 DIN 84 - ISO 1207 Length 10.0mm Material Steel 4.8 Surface Zinced A2K Thread M2 Head diameter D = 3.
AC65/AC75 Hardware Interface Description 9.3 Data Sheets of Recommended Batteries Article number: 02.10.011 s Hexagon Nut1 DIN 934 - ISO 4032 Material Steel 4.8 Surface Zinced A2K Thread M2 Wrench size / Ø 4 Thickness / L 1.6mm Type Nut DIN/UNC, DIN934 1. 9.3 2 nuts are delivered with DSB75 Support Board Data Sheets of Recommended Batteries The following two data sheets have been provided by VARTA Microbattery GmbH. Click here for sales contacts and further information: http://www.
s AC65/AC75 Hardware Interface Description 9.3 Data Sheets of Recommended Batteries Figure 49: Lithium Ion battery from VARTA AC65_AC75_HD_v01.
s AC65/AC75 Hardware Interface Description 9.3 Data Sheets of Recommended Batteries 8 F 7 6 4 3 40 d/s adhesive tape Nomex 0.18x8x32 50 d/s adhesive tape Nomex 0.18x5x32 90 tag 0.1x3x25 60 d/s adhesive tape Nomex 30 0.18x4x27 Ni-tag (0.07x4x15mm) 80 PCM D A 20 adhesive tape Kapton 0.055x8x18 130 wire black(-) AWG 24 150 sumitube (2x) 140 wire white(NTC) AWG24 +0 110 adhesive tape Kapton 0.055x6x28 (2x) 120 wire red(+) AWG24 37 - 0,5 0,2 58,5 +- 0,3 5 +- 0,1 0,2 C B 1 1.
