Telit Wireless Solutions SE867-AGPS User Manual
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Telit Wireless Solutions SE867-AGPS User Manual

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SE867-AGPS User Guide
1VV0300860 Rev. 3 - 2010-05-10

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  • Page 1 SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10...
  • Page 2 SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 This document is relating to the following products: PRODUCT SE867-AGPS Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 2 of 69...

  • Page 3: Table Of Contents

    PPS and RTC crystal ....................... 24 7.4. RFEN and RFXEN......................25 7.5. BOOTSEL and flash mode ....................25 8. Mounting the SE867-AGPS on the application board ..........26 Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 3 of 69...
  • Page 4 8.1. Stencil ..........................26 8.2. PCB pad design ......................26 8.3. Solder paste ........................28 8.4. SE867-AGPS solder reflow ..................... 28 9. Moisture sensitivity ....................30 10. Software Features .....................31 10.1. GPS NMEA........................31 10.1.1. Standard NMEA Sentences ....................... 31 10.1.2.
  • Page 5 SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 12. Conformity assessment issues..................60 13. Safety recommendations ...................61 14. Appendix A – Abbreviations and Acronyms ..............63 15. Appendix B – Datum Codes..................64 Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved...
  • Page 6 SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 DISCLAIMER The information contained in this document is proprietary information of Telit Communications S.p.A. and its affiliates (“TELIT”). The contents are confidential and any disclosure to persons other than the officers, employees, agents or subcontractors of the owner or licensee of this document, without the prior written consent of Telit, is strictly prohibited.

  • Page 7: Introduction

    SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 Introduction The information presented in this document is believed to be accu rate and reliable. However, no responsibility is assumed by Telit Communications S.p. A. for its use, nor any infringement of patents or ot her rights of third parties which may result from its use.

  • Page 8: Related Documents

    All dates are in ISO 86 01 format, i.e. YYYY-MM-DD. 1.4. Related Documents The following documents are related to this user guide: [1] “SE867-AGPS Product description” [2] “SE867-AGPS E valuation Board User Guide” All documentation can be downloaded from Telit official web site www.telit.com...

  • Page 9: Overview

    AGPS stand-alone GPS module. This document cannot embrace the whole hardware solutions and products that may be designed using the SE867-AGPS module. The information given is a guideline and a starting point for proper product development with the Telit stand-alone module.

  • Page 10: Mechanical Dimensions

    SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 Mechanical Dimensions Telit SE867-AGPS module overall dimensions are:  Length: 18 mm  Width: 18 mm  Thickness: 3.5 mm  Weight 1.8 g Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved...
  • Page 11 SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 Bottom side Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 11 of 69...

  • Page 12: Gps Module Connections

    SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 GPS module connections PIN- Ball Signal Function Type Notes Misce llaneou s Functions RFEN Active high enable signal of R F secti Control RFXEN Active low enable signal of R F sectio...

  • Page 13: Pin-Out View

    SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 Ball Signal Function Type Notes N.C. N.C. N.C. N.C. 4.2. Pin-out view RFEN RFXEN 1V8_RF 1V8_DIG VDD_REG_IN BOOTSEL WAKE1 1V8_RF_EN 1V8_DIG_EN RTC_IN VDD_CTRL IOVD D_AIN VREG_OUT RTC_OUT TX_UART RESET RF_IN RX_UART V_IO NOTE: The drawing above is a top view.

  • Page 14: Electrical Description

    SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 Electrical description Having power supply circuitry, RF path and board layout properly designed is key to get a successfully application design. So, the below requirements and guidelines have to be carefully read and taken into account for correct device operations.
  • Page 15 SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 Figure 1 Power supply connections for configuration 1 The voltage ranges for this configu ratio n are: Voltage 2.5V 4.2V V_IO 2.7V 3.3V VDD_REG_IN 3.6V The condition VDD_REG_IN  V_IO must be satisfied for every module power mode (included power save modes).

  • Page 16: Configuration 2

    SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 5.1.2. Configuration 2 This configuration is similar to the previous one with the difference t hat the V_IO is now set to 1.8V and the I/O logic levels have changed consequently. This change in the V_IO levels requires also a change in the IOVDD_AIN supply.

  • Page 17: Configuration 3

    SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 5.1.3. Configuration 3 In this configuration, the internal regulators are bypassed and th e module power consumption is reduced. The internal LDO must be disabled via 1V8_DIG_EN and 1V8_RF_EN signals and to separate 1.8V supplies must be connect ed to the 1V8_DIG and 1V8_RF pins.
  • Page 18 SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 Figure 4 power supply connections for configuration 3 (I/O at 1.8V) 1V8_DIG and 1V8_RF limits are the same reported above. Note: Please note that the diagrams above report only the required connections.

  • Page 19: Power-On Sequence

    1VV0300860 Rev. 3 - 2010-05-10 5.2. Power-On Sequence A few rules must be respected when powering the SE867-AGPS mod ule. When using a configuration with a 3V power supply on the V_IO pin attention must be paid in order to avoid asserting V_IO when the 1V8_DIG is not asserted as well.
  • Page 20 SE867-AGPS User Guide 0300860 Rev. 3 - 2010-05-10 Important: in the previous table VDDIO represents the reference voltage of the differe nt signals. Please refer to the following table for a signal-to-reference voltage mapping. Sign al-to-ref ence volta ge mapping...

  • Page 21: Rf Path And Antenna

    6.1. RF design guidlines The SE867-AGPS module requires an external RF path with a net gain > 16dB and a noise figure < 1.5dB in order to achieve the best performances. In or der to achieve this...
  • Page 22 SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 The chosen active antenna must be properly biased using a correctly design bias tee. The figure below shows a bias tee example (including ESD protection diode). Figure 5. Antenna bias tee ANTENNA LINE ON PCB REQUIREMENTS...

  • Page 23: Gps Antenna Pcb Line Guidelines

     If EM noisy devices are NOT placed close to the PCB hosting the SE867-AGPS, the antenna line should be realized in microstrip technology (signal trace on the top or bottom layer with only one reference GND plane, plus coplanar GND guard trace parallel to the signal trace), in order to reduce the ohmic losses of the trace.

  • Page 24: Connection Guidelines

    The PPS signal outputs a precise reference timing pulse with frequency 1Hz and length 100ms. For pulse voltage level please refers to paragraph 5.3. The SE867-AGPS module requires an external 32.768 kHz crystal connected to RTC_IN and RTC_OUT balls in order to generate the Real Time Clock. The suggested crystal load capacitance and frequency tolerance are reported in the table below: Reproduction forbidden without Telit Communications S.p.A.

  • Page 25: Rfen And Rfxen

    V_IO line (such a network has already been implemented inside the module), but V_IO can not be supplied before 1V8_DIG. For the same reasons all the input signals coming to the SE867-AGPS must be driven low when 1V8_DIG is not present.

  • Page 26: Mounting The Se867-Agps On The Application Board

    SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 Mounting the SE867-AGPS on the application board The Telit SE867-AGPS module has been designed in order to be compliant with a stand ard lead-free SMT process. 8.1. Stencil Stencil’s apertur es layout can be the same of the recommended footprint (1:1), we suggest a thickness of stencil foil ≥...
  • Page 27 SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 Dimension Value [mm] Ball pitch Solder resist opening diameter A 1,150 Metal PAD diameter B 1 +/- 0,05 Placement of microvias not covered by solder resist is not recommended inside the inhibit area (1.6 mm - red circle in the picture) unless the microvia carry the same signal of the pad itself Holes in pad are allowed only for blind holes and not for through holes.

  • Page 28: Solder Paste

    SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 8.3. Solder paste Lead free Solder paste Sn / Ag / Cu 8.4. SE867-AGPS solder reflow The following is the recommended solder reflow profile Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved...
  • Page 29 NOTE: All temperatures refer to topside of the package, measured on the package bo dy surface. IMPORTANT: SE867-AGPS module can accept only one reflow process Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 29 of 69...

  • Page 30: Moisture Sensitivity

     The shelf life of SE867-AGPS inside of the dry bag shall be 12 m onth from the bag seal date, when stored in a non-condensing atmospheric envir onment of <40°C /...

  • Page 31: Software Features

    SE867-AGPS custom NMEA messages. 10.1. GPS NMEA SE867-AGPS relays GPS data stream conform to NMEA 0183 format. Default output format configuration is 9600bps, 8N Other available output configuration speeds are: 960 0, 19200, 38400, 57600 and 115200 bps.

  • Page 32: Custom Nmea Sentences

    Please refer to NMEA 0183 standard (http://www.nmea.org about information carried by each NMEA data set. 10.1.2. Custom NMEA Sentences SE867-AGPS custom NMEA messages are structured according to the stan dard template of NMEA format: $P NV,<co mmand/response>*c c<carriage return><new line>...

  • Page 33: Assist

    SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 If the NMEA string can be decoded to explicit command for the SE867-AGPS, the same message will be echoed back to sender. According to the NMEA standard the maximum number of characters between the starting delimiter ‘$’...
  • Page 34 SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 Bitmask Description 0x001 Erase position from NVRAM, FSH and RAM 0x002 Erase accurate time, leave inaccurate time 0x004 Erase RTC time 0x008 Erase TCXO offset and drift values from NVRAM, FSH and RAM...

  • Page 35: Sleep

    SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 $PUNV,START,AUTO*52 $PUNV,START,0*6D commands. 10.1.2.4. SLEEP With the SLEEP command the user can put the system into the sleep mode. The system stays in the sleep mode until it is forced to wake up by activity on UART0 or after a specified timeout.

  • Page 36: Wakeup

    SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 in SE867-AGPS firmware, which is related to messages processing, the UART queue flushing delays etc. 10.1.2.5. WAKEUP To wake up from sleep, the user should send any kind of NMEA message to UART0 port.

  • Page 37: Config

    SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 Please note that the confirmation for STOP command will be echoed only after the system has stopped. Until that time SE867-AGPS will produce navigation data. 10.1.2.7. CONFIG With CONFIG command the user can change the configuration of the system. The configuration takes effect immediately and it is also stored in non-volatile media.

  • Page 38: Version

    PRN 2 etc. ALMMASK is a bitmask showing for which SVs SE867-AGPS has valid almanac data. It has a hexadecimal format with the bit index 0 associated with PRN 1, bit index 1 associated with PRN 2 etc.

  • Page 39: Agc

    SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 SIVMASK is a bitmask of SVs that SE867-AGPS lists in GSV message. It has a hexadecimal format with the bit index 0 associated with PRN 1, bit index 1 associated with PRN 2 etc.

  • Page 40: Clkoffset

    SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 Q[3] is a [3] bin loading of a sample distribution of the IF/BB signal for Q-channel (in Q[-3] is a [-3] bin loading of a sample distribution of the IF/BB signal for Q-channel (in Gain is an amount of gain signals.

  • Page 41: Cfg_R

    SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 The offset can also be negative, for example: $PUNV,CLKOFFSET,16.36760,-8.126*cc In case of 19.2MHz nominal clock frequency, for example: $PUNV,CLKOFFSET,19.20000,21.427*cc Please see section 10.1.3.1 describing the way how this message can be enabled.
  • Page 42 SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 is the ID of subsystem, which detected the error. Two decimal digits with leading zero if necessary. error is the subsystem specific error number. Five decimal digits w ith leading zero if neces sary.

  • Page 43: Configuration Sections

    SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 Illegal CRC: $PUNV,ERR,05,00006,00000*5B Illegal command: $PUNV,ERR,05,00003,00000*5E 10.1.2.18. OK is an acknowledgement message, which is sent as reply of successful execution of command, which is sent via different protocol than NMEA. The format of the message...
  • Page 44 SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 CM-OutCM-In UART NMEA_MASK $PUNV,SET,00, ,0,1000, Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 44 of 69...
  • Page 45 Please note that there is no comma or space between CM-Out and CM-In fields. The SE867-AGPS firmware will check the maximum length of the NMEA messages when changing output section. For example, if the speed is set to 4800 bps, the output Reproduction forbidden without Telit Communications S.p.A.

  • Page 46: Time Zone Configuration

    1VV0300860 Rev. 3 - 2010-05-10 protocol is NMEA and the selected NMEA messages will take bandwidth, which is more than 450 characters per second, the SE867-AGPS firmware will produce an error message and reject the changes. In case of successful execution of...

  • Page 47: Version Number

    10.1.2.3 section and after exiting sleep mode. In this case version numbers message is used for notification that SE867-AGPS initialization sequence is complete and it is ready to accept commands. The version numbers can be read by using the following command:...

  • Page 48: Navigation Mode Configuration

    Please see the ERR section for details (10.1.2.17). 10.1.3.4. Navigation Mode Configuration The N avigation mode configuration is used to configure SE867-AGPS for different use- cases. Currently SE867-A GPS supports two navigation modes: PEDESTRIAN and VEHICLE. Please note that the configuration parameters described in the sections 10.1.3.5 and...

  • Page 49: Sbas Configuration

    SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 The navigation mode can be switched by the following command Mode $PUNV,CONFIG,NAVMODE, $PUNV,SET,NAVMODE Name Format Valid values Default value Description SE867-AGPS navigation mode: Mode String PED, VEHICLE VEHICLE PED – PEDESTRIAN VEHICLE – VEHICLE...

  • Page 50: 2D Configuration

    ERR reply message. Please see the ERR section for details (10.1.2.17). 10.1.3.6. 2D Configuration The 2D configuration is used to configure SE867-AGPS 2D fix control. The current 2D fix control configuration can be read in the system with the following command:...
  • Page 51 Please see usage examples below. Decimal Altitude aiding value in respect to AltAidingVal • 20000 Number geoid (in meters) SE867-AGPS tries to produce a 3D fix at start-up. Decimal If producing a 3D fix is not feasible ≥ 0 StartFallbackTimeout2D Number...

  • Page 52: Antenna Configuration

    SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 command, the receiver sends the confirmation in the following form: $PUNV,CFG_S,11*5A In case of a failure of execution of GETCONFIG, CONFIG or SET command the receiver sends the ERR reply message. Please see the ERR section for details (10.1.2.17).

  • Page 53: Datum Configuration

    SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 Default Name For mat Valid values Description value Decimal Antenna cable delay configuration (in AntennaDelay -500…500 Number nanoseconds) The antenna delay can be changed by the following command Delay $PUNV,CONFIG,AN Delay $PUNV,SET,ANT,...
  • Page 54 SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 $PUNV,CFG_R,13, Name The configuration command template for custom datum is as follows: Name $PUNV,CONFIG,13, Name $PUNV,SET,13, To select one of the predefined data, the syntax is as follows: $PUNV,CONFIG,16, $PUNV,SET,16, Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved...
  • Page 55 SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 Name Format Valid values Default value Description Datum centre X shift in respect to Decimal -1…2 WGS84 ellipsoid (in meters). Datum centre Y shift in respect to Decimal -1…2 WGS84 ellipsoid (in meters).

  • Page 56: Position Pinning Configuration

    SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 $PUNV,CONFIG,16,1*0D 10.1.3.9. Position Pinning Configuration The Position pinning configuration is for static case parameter configuration. Please note that the position pinning configuration through NMEA command affects the current navigation mode only. Please see section 10.1.3.4 for the navigation modes details.
  • Page 57 SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 Default Default Valid Name Format value value Description values (pedestrian) (vehicle) The threshold value for position jump. Position pinning will be Decimal with disabled if this value is Position ≥ 0 fractional reached (in meters).

  • Page 58: Assisted Gps - Agps

    SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 10.2. Assisted GPS – AGPS SE867-AGPS supports Assisted GPS (AGPS) technology to speed up navigation in challenging environments: indoors, urban canyons and other locations where broadcast sate llite signals are obscured. AGPS can also accelerate the navigation...

  • Page 59: 11. Se867-Agps Evaluation Kit

    11.1. Short description In order to give the customer the possibility to evaluate the performances of Telit SE867-AGPS module in all the available configurations, an evaluation kit has been developed. The evaluation kit consists in a single board with: ...

  • Page 60: Conformity Assessment Issues

    Assessment of the final product must be made against the e ssential requirements of the EMC and the LVD Directives. The SE867-AGPS module is conform to t he following European Union Directives:  Low Voltage Directive 2006/95/EEC and product safety ...

  • Page 61: 13. Safety Recommendations

    SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 13. Safety recommendations READ CAREFULLY Make sure that the use of this product is allowed in the country and in the environment where used. The use of this product may be dangerous and has to be avoided in the following areas: ...
  • Page 62 SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 The text of the Directive 99/05 regarding telecommunication equipments is available, while the applicable Directives (Low Voltage and EMC) are available at: http://ec.europa.eu/enterprise/sectors/electrical/lvd/index_en.htm Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved...

  • Page 63: Appendix A - Abbreviations And Acronyms

    SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 14. Appendix A – Abb reviati ons and Acronyms Acronym Description AEUI Almanac, Ephemeris, UTC and Ionospheric Automatic Gain Controls AGPS Assisted GPS ASCII American Standard Code for Information Interchange Bits Per Second...

  • Page 64: Appendix B - Datum Codes

    SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 15. Appendix B – Datu m Code ID NMBR NAME Region of use User defined WGS84 Global ADI-M Ethiopia; Sudan ADI-E Burkina Faso ADI-F Cameroon ADI-A Ethiopia ADI-C Mali ADI-D Senegal ADI-B...
  • Page 65 SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 Argentina Phoenix Islands South Africa Bahamas; Florida Tunisia New Zealand (Chatham Island) Paraguay Brazil Guinea Deception Island; Antarctica Indonesia (Sumatra) New Georgia Islands (Gizo Island) Easter Island Estonia EUR-E Cyprus EUR-F Egypt EUR-G England;...
  • Page 66 SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 IND-P Pakistan INF-A Thailand ING-B Vietnam (Con Son Island) ING-A Vietnam (Near 16øN) INH- Thailand Indonesia Ireland South Georgia Islands Diego Garcia Johnston Island Sri Lanka Kerguelen Island West Malaysia & Singapore...
  • Page 67 SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 NAS-U Greenland (Hayes Peninsula) MEAN FOR Antigua; Barbados; Barnuda; Caicos Islands; Cuba; Dominican NAS-P Republic; Grand Cayman; Jamaica; Turks Islands NAS-N MEAN FOR Belize; Costa Rica; El Salvador; Guatemala; Honduras; Nicaragua NAS-E...
  • Page 68 SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 PRP-G Peru PRP-H Venezuela Chile (Near 53øS) (Hito XVIII) Puerto Rico; Virgin Islands Russia Qatar Greenland (South) Mascarene Islands EUR-I Italy (Sardinia) SPK-A Hungary SPK-B Poland SPK-C Czechoslovakia SPK-D Latvia SPK-E Kazakhstan...
  • Page 69 SE867-AGPS User Guide 1VV0300860 Rev. 3 - 2010-05-10 Algeria Wake Atoll Marshall Islands WGS72 Global Definition Uruguay Suriname Reserved Finland Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 69 of 69...

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