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Summary of Contents for Telit Wireless Solutions SL876Q5-A
- Page 1 SL876Q5-A Product User Guide 1VV0301333 Rev. 2 2017-06-27...
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Page 2: Notice
SL876Q5-A Product User Guide SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE NOTICE While reasonable efforts have been made to assure the accuracy of this document, Telit assumes no liability resulting from any inaccuracies or omissions in this document, or from use of the information obtained herein. -
Page 3: Usage And Disclosure Restrictions
SL876Q5-A Product User Guide USAGE AND DISCLOSURE RESTRICTIONS License Agreements The software described in this document is the property of Telit and its licensors. It is furnished by express license agreement only and may be used only in accordance with the terms of such an agreement. -
Page 4: Product Applicability Table
SL876Q5-A Product User Guide PRODUCT APPLICABILITY TABLE Product SE876Q5-A Page 4 of 68 1VV0301333 Rev. 2 2017-06-27... -
Page 5: Table Of Contents
PRODUCT DESCRIPTION ............14 Product Overview ............... 14 SL876Q5-A Block Diagram ............15 SL876Q5-A Module ..............16 SL876Q5-A EVALUATION KIT (EVK) ........17 SL876Q5-A Evaluation Board (EVB) ........... 18 PRODUCT FEATURES .............. 19 Built-in Antenna and Switch ............19 Multi-Constellation Navigation ............. 19 Quasi-Zenith Satellite System (QZSS) support ...... - Page 6 SL876Q5-A Product User Guide 1PPS ..................22 I/O Communication Ports ............22 Power Management ..............23 Full Power Mode ................. 23 SmartGNSS ................23 Trickle Power ................24 Push-to-Fix ................. 24 SiRFaware .................. 24 Hibernate ..................24 Internal LNA ................25 Device Wake-up (1 port) ............
- Page 7 SL876Q5-A Product User Guide DC Power Consumption ............. 37 Control Input Signals ..............38 ON-OFF (input) and SYSTEM-ON (output) ......... 38 nReset ..................38 Boot Select ................. 39 Internal / nExternal Antenna Enable ..........39 Control Output Signals ..............39 1PPS ..................
- Page 8 SL876Q5-A Product User Guide PRODUCT PACKAGING AND HANDLING ....... 56 Product Labelling and Serialization ..........56 Product Label – SL876Q5-A ............56 Product Packaging ..............57 Moisture Sensitivity ..............58 ESD Sensitivity ................59 Reflow..................59 Assembly Considerations............59 Washing Considerations ............. 59 Safety ..................
- Page 9 Figure 9-1 Reference Design ....................45 Figure 10-1 RF Trace Examples ..................50 Figure 11-1 SL876Q5-A Mechanical Drawing ..............53 Figure 12-1 SL876Q5-A Footprint and Ground Plane............54 Figure 12-2 SL876Q5-A PCB Footprint (detail) ..............55 Figure 13-1 SL876Q5-A Product Label ................56 Figure 13-2 Product Packaging –...
- Page 10 Table 8-3 Absolute Maximum Ratings .................. 35 Table 8-4 DC Supply Voltage ....................36 Table 8-5 Power Consumption – SL876Q5-A ..............37 Table 8-6 Power Consumption – SL876Q5-A Low Power modes ........37 Table 8-9 Ground Plane Size ....................40 Table 8-7 Frequency Plan ....................41 Table 8-8 LO Leakage ......................
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Page 11: Introduction
Product User Guide 1. INTRODUCTION Purpose The purpose of this document is to provide product information for the SL876Q5-A module. Contact and Support Information For general contact, technical support services, technical questions and report documentation errors contact Telit Technical Support at: •... -
Page 12: Text Conventions
SL876Q5-A Product User Guide Text Conventions Dates are in ISO 8601 format, i.e. YYYY-MM-DD. • Symbol Description Danger – This information MUST be followed or catastrophic equipment failure and/or bodily injury may occur. Caution or Warning – This is an important point about integrating the product into a system. -
Page 13: Related Documents
SL876Q5-A Product User Guide Related Documents SL876Q5-A Data Sheet • • SL876Q5-A Evaluation Kit User Guide Related Documents Requiring a Non-disclosure Agreement SiRFstarV B02 Designer’s Guide • • SiRFstarV B02 Software User's Guide • NMEA Reference Guide (CS-129435-MA8) • SiRFstarV One Socket Protocol Interface Control Document (CS-129291-DCP15) SiRFstarV OSP Extensions (CS-303979-7) •... -
Page 14: Product Description
The inclusion of the GLONASS and BeiDou constellations yields better coverage, greater accuracy, and improved availability. The SL876Q5-A modules are based on the SiRFstar 5e (B02) flash GNSS chip. Product Overview •... -
Page 15: Sl876Q5-A Block Diagram
SL876Q5-A Product User Guide SL876Q5-A Block Diagram Figure 2-1 SL876Q5-A Block Diagram Page 15 of 68 1VV0301333 Rev. 2 2017-06-27... -
Page 16: Sl876Q5-A Module
SL876Q5-A Product User Guide SL876Q5-A Module Figure 2-2 SL876Q5-A module photo Page 16 of 68 1VV0301333 Rev. 2 2017-06-27... -
Page 17: Sl876Q5-A Evaluation Kit (Evk)
SL876Q5-A Product User Guide 3. SL876Q5-A EVALUATION KIT (EVK) Figure 3-1 Evaluation Kit (EVK) contents Page 17 of 68 1VV0301333 Rev. 2 2017-06-27... -
Page 18: Sl876Q5-A Evaluation Board (Evb)
SL876Q5-A Product User Guide SL876Q5-A Evaluation Board (EVB) Figure 3-2 SL876Q5-A Evaluation Board Page 18 of 68 1VV0301333 Rev. 2 2017-06-27... -
Page 19: Product Features
SL876Q5-A Product User Guide 4. PRODUCT FEATURES Built-in Antenna and Switch The module includes a built-in tri-band chip antenna and an RF switch that provides for input from an external active antenna. Multi-Constellation Navigation GPS and GLONASS constellations are enabled by default. -
Page 20: Client-Generated Extended Ephemeris (Cgee)
SL876Q5-A Product User Guide The minimum cold start TTFF can be reduced from 30 seconds to just a few seconds by implementing AGPS, which can provide Extended Ephemeris (EE) data by two methods - 1. Locally-generated: The receiver includes software to project the future positions of the satellites. -
Page 21: Velocity Dead-Reckoning
SL876Q5-A Product User Guide Velocity Dead-Reckoning Velocity dead-reckoning is the use of the last known velocity to propagate the navigation solution when there are insufficient measurements to calculate an updated solution. It serves to mitigate the effects of blocked satellite signals by continuing to provide a position output. -
Page 22: 10 Hz Navigation
SL876Q5-A Product User Guide To enable 5 Hz Navigation, use a $PSRF103 command or an OSP MID 136 command with bit 2 of the pos_mode_enable field set to 1. 10 Hz Navigation When 10 Hz reporting is commanded, the output report rate is 10 Hz. -
Page 23: Power Management
SL876Q5-A Product User Guide Power Management The receiver features several operating modes that provide reduced power consumption. Availability of GNSS signals in the operational environment will be a factor in choosing power management modes. The designer can choose a mode that provides the best trade-off of navigation performance versus power consumption. -
Page 24: Trickle Power
SL876Q5-A Product User Guide The module defaults to full power during the initial acquisition of the first fix, and will continue tracking in SmartGNSS if enabled. Therefore, all first fix metrics for SmartGNSS are equivalent to full power. 4.15.2.1. SmartGNSS I SmartGNSS I autonomously manage GNSS system usage based on signal conditions to save power. -
Page 25: Internal Lna
SL876Q5-A Product User Guide Internal LNA The module has an adjustable gain LNA internal to the GNSS device. An additional LNA is in the module circuit for the built-in chip antenna. It is not in the circuit for an external antenna. -
Page 26: Product Performance
≤ 1.1 GPS + GLO Warm 22.8 Cold ≤ 1.1 GPS + BeiDou Warm 29.7 Cold 32.2 Test Conditions: Static scenario, -130 dBm, Full Power mode Table 5-2 SL876Q5-A Time to First Fix Page 26 of 68 1VV0301333 Rev. 2 2017-06-27... -
Page 27: Sensitivity
Minimum Signal Level Constellation(s) State (dBm) External Ant Acquisition -148 Navigation -161 Tracking -165 Acquisition -148 GPS + GLO Navigation -161 Tracking -165 Test conditions: Static scenario, Full Power mode Table 5-3 SL876Q5-A Sensitivity Page 27 of 68 1VV0301333 Rev. 2 2017-06-27... -
Page 28: Software Interface
SL876Q5-A Product User Guide 6. SOFTWARE INTERFACE The host serial I/O port (UART, I C, or SPI) supports full duplex communication between the receiver and the user. The default UART configuration is: NMEA, 9600 bps, 8 data bits, no parity, 1 stop bit. -
Page 29: Sirf Proprietary Messages
SL876Q5-A Product User Guide The following Talker IDs are used: Talker ID Constellation Galileo BeiDou GLONASS Solutions using multiple constellations Table 6-3 NMEA Talker IDs SiRF Proprietary Messages The receiver can issue several proprietary NMEA output messages ($PSRF) which report additional receiver data and status information. -
Page 30: Nmea Input Commands
SL876Q5-A Product User Guide NMEA Input Commands The receiver uses NMEA proprietary messages for commands and command responses. This interface provides configuration and control over selected firmware features and operational properties of the module. The format of a command is: $<command-ID>[,<parameters>]*<cr><lf>... -
Page 31: Flash Upgradability
SL876Q5-A Product User Guide 7. FLASH UPGRADABILITY The firmware stored in the internal Flash memory of the SL876Q5-A may be upgraded via the serial port TX/RX pads. Please refer to the SL876Q5-A Evaluation Kit User Guide to update the firmware. -
Page 32: Electrical Interface
SL876Q5-A Product User Guide 8. ELECTRICAL INTERFACE Module Pin-out Figure 8-1 SL876Q5-A Pin-out Diagram Page 32 of 68 1VV0301333 Rev. 2 2017-06-27... - Page 33 SL876Q5-A Product User Guide Name Type Function Power Pwr Connect to 1.8 V supply. See Section 8.4 Power Supply. Ground 2, 3, 5, 20, 24 GND Gnd Connect all pins to ground. RF Input Ext Ant External Antenna RF Input.
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Page 34: Table 8-1 Sl876Q5-A Pin-Out Function Table
SCL / Secondary Host Port I/O. UART: Receive (RX1), or I C: Clock (SCL) SDA / Secondary Host Port I/O. UART: Transmit(TX1), or I C: Data (SDA) Table 8-1 SL876Q5-A Pin-out Function Table Page 34 of 68 1VV0301333 Rev. 2 2017-06-27... -
Page 35: Dc Characteristics
SL876Q5-A Product User Guide DC Characteristics Signal Description Units Low level output voltage, I 0.22 x V High level output voltage, I 0.8 * V Low level input voltage -0.3 0.3 x V High level input voltage, I 0.7 x V + 0.3... -
Page 36: Power Supply
The module will power up into the state determined by the ON-OFF pin (High: RUN; Low: HIBERNATE). The current power state of the SL876Q5-A can be determined by monitoring the “SYSTEM- ON” signal. A logic low indicates the module is in OFF, RESET, HIBERNATE, or STANDBY;... -
Page 37: Dc Power Consumption
Trickle Power mode: On 100 ms, Max Off 30 s Push To Fix mode: Interval: 6 s, Max Search: 6 s, Max Off: 120 s Table 8-6 Power Consumption – SL876Q5-A Low Power modes Page 37 of 68 1VV0301333 Rev. 2... -
Page 38: Control Input Signals
Control Input Signals ON-OFF (input) and SYSTEM-ON (output) The SL876Q5-A module has three power states: OFF, RESET, and ON. The OFF state is when power is removed from the module. Upon initial application of power, the module enters the RESET state until the internal reset process is completed. -
Page 39: Boot Select
SL876Q5-A Product User Guide Boot Select It is not necessary to use the Boot Select pin to re-flash the receiver since SiRFlive can use commands to perform this task. However, it is desirable to bring it out to a test point if otherwise unconnected. -
Page 40: Rf Interface
An active antenna (that is, an antenna with a built in low noise amplifier) with a noise figure of less than 1.0 dB should be used for optimum results. The SL876Q5-A contains an internal pre- select SAW filter which is in both the External and Internal antenna input paths. -
Page 41: External Active Antenna Voltage
SL876Q5-A Product User Guide External Active Antenna Voltage An external bias-T is required to provide voltage to an external antenna. A maximum of 16 V DC may be applied to the External Ant. RF_In pin. See Section 10.11 Powering an External LNA (External Active Antenna). -
Page 42: Host I/O Ports - Configuration And Operation
SL876Q5-A Product User Guide Host I/O Ports - Configuration and Operation The module host serial ports are configurable for the desired interface. The primary host port can be configured to communicate using a UART, I C, or SPI interface. See Section 8.8.1 Primary Host Port Configuration for details of port configuration. -
Page 43: I 2 C Operation
SL876Q5-A Product User Guide Use the Query/Rate Control (PSRF103) to enable and disable output NMEA messages and set their output rates. After configuration, the pins are defined below: Pin Name UART Function Primary Port Transmit Data (TX) Receive Data (RX) -
Page 44: Spi Operation
SL876Q5-A Product User Guide After configuration, the pins are defined below: Pin Name C Function Primary Port C Clock (SCL) C Data (SDA) GPIO6 Not used GPIO7 Not used GPIOA Data Ready Secondary Port C Data (SDA) C Clock (SCL) -
Page 45: Reference Design
SL876Q5-A Product User Guide 9. REFERENCE DESIGN Figure 9-1 Reference Design Page 45 of 68 1VV0301333 Rev. 2 2017-06-27... - Page 46 Power Supply for details of requirements for the power supply. Due to the very small size of the built-in chip antenna, a proper ground plane is critical to achieving good performance. Please refer to Figure 12-1 SL876Q5-A Ground Plane for requirements.
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Page 47: Rf Front End Design Considerations
SL876Q5-A Product User Guide RF FRONT END DESIGN CONSIDERATIONS RF Signal Requirements The receiver can achieve Cold Start acquisition with a signal level above the specified minimum at its input. This means that it can acquire and track visible satellites, download the necessary ephemeris data and compute the location within a 5 minute period. -
Page 48: Gnss Antenna Polarization
SL876Q5-A Product User Guide general direction, the geometry of the remaining satellites will result is a lower position accuracy. The receiver reports this geometry effect in the form of PDOP, HDOP and VDOP numbers. For example, in a vehicular application, the GNSS antenna may be placed on the dashboard or rear package tray of an automobile. -
Page 49: Gnss Antenna Gain
SL876Q5-A Product User Guide GNSS Antenna Gain Antenna gain is defined as the amplified signal power from the antenna compared to a theoretical isotropic antenna (equally sensitive in all directions). Optimum performance is realized only if the firmware build and hardware configuration match the type of antenna used (active or passive). -
Page 50: Pcb Stack And Trace Impedance
SL876Q5-A Product User Guide PCB stack and Trace Impedance It is important to maintain a 50 Ω impedance on the RF path trace. Design software for calculating trace impedance can be found from multiple sources on the internet. The best method is to contact your PCB supplier and request a stackup for a 50 Ω... -
Page 51: Implications Of The Pre-Select Saw Filter
SL876Q5-A Product User Guide Implications of the Pre-Select SAW Filter The RF input of the module is connected directly to the SAW filter (after the RF switch). Therefore, any circuit connected to the RF input pin would see a complex impedance presented by the SAW filter (especially out of band), rather than the relatively broad and flat return loss presented by an LNA. -
Page 52: Powering An External Lna (External Active Antenna)
SL876Q5-A Product User Guide Powering an External LNA (External Active Antenna) An external LNA requires a source of power. Many active antennas accept 3 V to 5 V DC that is impressed upon the RF signal line. Two approaches can be used: 1. -
Page 53: Mechanical Drawing
SL876Q5-A Product User Guide MECHANICAL DRAWING Figure 11-1 SL876Q5-A Mechanical Drawing Page 53 of 68 1VV0301333 Rev. 2 2017-06-27... -
Page 54: Pcb Footprint
Product User Guide PCB FOOTPRINT Figure 12-1 SL876Q5-A Footprint and Ground Plane The SL876-A requires a reference ground plane of 40mm by 80mm for the chip antenna to work properly. The SL876-A is centered on the long axis, but flush with the top edge of the reference ground plane (shown to the left here). -
Page 55: Figure 12-2 Sl876Q5-A Pcb Footprint (Detail)
SL876Q5-A Product User Guide Figure 12-2 SL876Q5-A PCB Footprint (detail) The SL876-A requires a reference ground plane of 40mm by 80mm for the chip antenna to work properly. The SL876-A is centered on the long axis, but flush with the top edge of the reference ground plane (shown to the left here). -
Page 56: Product Packaging And Handling
Product User Guide PRODUCT PACKAGING AND HANDLING Product Labelling and Serialization The SL876Q5-A module label has a 2D Barcode with the module serial number. Contact a Telit representative for information on specific module serial numbers. Product Label – SL876Q5-A Figure 13-1 SL876Q5-A Product Label... -
Page 57: Product Packaging
SL876Q5-A Product User Guide Product Packaging SL876Q5-A modules are supplied in Tray packaging of 90 pcs as shown below Figure 13-2 Product Packaging – Tray 90 pcs. each Page 57 of 68 1VV0301333 Rev. 2 2017-06-27... -
Page 58: Moisture Sensitivity
The SL876Q5-A module has a moisture sensitivity level rating of 3 as defined by IPC/JEDEC J-STD-020. This rating is assigned due to some of the components used within the module. -
Page 59: Esd Sensitivity
SL876Q5-A Product User Guide ESD Sensitivity The SL876Q5-A module contains class 1 devices and is classified as Electro-Static Discharge Sensitive (ESDS). Telit recommends the two basic principles of protecting ESD devices from damage: Handle sensitive components only in an ESD Protected Area (EPA) under protected and controlled conditions;... -
Page 60: Environmental Requirements
SL876Q5-A Product User Guide ENVIRONMENTAL REQUIREMENTS Operating Environmental Limits Environmental Limits - Operating Temperature -40°C to +85°C Temperature Rate of ±1°C / minute maximum Change Up to 95% non-condensing or Humidity wet bulb temperature of +35°C, whichever is less -500 m to 18,000 m... -
Page 61: Compliances
Manufactured in an ISO 9000: 2000 accredited facility • Manufactured to TS 16949 requirement (upon request) • EU Declaration of Conformity Certificate in process RoHS Certificate The Telit SL876Q5-A modules are fully compliant with the EU RoHS Directives. Page 61 of 68 1VV0301333 Rev. 2 2017-06-27... -
Page 62: Glossary And Acronyms
SL876Q5-A Product User Guide GLOSSARY AND ACRONYMS Assisted (or Aided) GPS AGPS provides ephemeris data to the receiver to allow faster cold start times than would be possible using only broadcast data. This extended ephemeris data could be either server-generated or locally- AGPS generated. - Page 63 SL876Q5-A Product User Guide Global Positioning System The U.S. GNSS, a satellite-based positioning system that provides accurate position, velocity, and time data. GPS is operated by the US Department of Defense. A hot start occurs when a receiver begins operation with known time, position, and ephemeris data, typically after being sent a restart command.
- Page 64 SL876Q5-A Product User Guide Satellite Based Augmentation System A system that uses a network of ground stations and geostationary satellites to provide differential corrections to GNSS receivers. These SBAS corrections are transmitted on the same frequency as navigation signals, so the receiver can use the same front-end design to process them.
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Page 65: Safety Recommendations
SL876Q5-A Product User Guide SAFETY RECOMMENDATIONS READ CAREFULLY Be sure that the use of this product is allowed in the country and in the environment required. The use of this product may be dangerous and must be avoided in the following areas: •... -
Page 66: Electrical And Fire Safety
SL876Q5-A Product User Guide Electrical and Fire Safety This device is intended for built-in designs and must be installed by users that have taken adequate precautions and have sufficient knowledge to avoid electrical, mechanical and fire hazards. The module shall be mounted on a PCB which complies with V-0 flammability class. -
Page 67: Document History
SL876Q5-A Product User Guide DOCUMENT HISTORY Revision Date Changes 2017-03-02 Initial issue 2017-06-21 Added ground plane information Minor text revisions and additions 2017-06-27 Removed “Preliminary” watermark Page 67 of 68 1VV0301333 Rev. 2 2017-06-27...
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