Ublox TOBY-L1 Series System Integration Manual
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Ublox TOBY-L1 Series System Integration Manual

Lte module
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TOBY-L1 series
LTE modules
System Integration Manual
Abstract
This document describes the features and the system integration of
TOBY-L1 series LTE wireless modules.
These modules are a complete and cost efficient 4G solution offering
100 Mb/s download, 50 Mb/s upload, and covering up to 3 LTE Bands
in the compact TOBY form factor.
www.u-blox.com
35.6 x 24.8 x 2.6 mm

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  • Page 1 Abstract This document describes the features and the system integration of TOBY-L1 series LTE wireless modules. These modules are a complete and cost efficient 4G solution offering 100 Mb/s download, 50 Mb/s upload, and covering up to 3 LTE Bands in the compact TOBY form factor.
  • Page 2 TOBY-L1 series - System Integration Manual Document Information Title TOBY-L1 series Subtitle LTE modules Document type System Integration Manual Document number UBX-13001482 Document status Objective Information Document status information Objective This document contains target values. Revised and supplementary data will be published Specification later.

  • Page 3: Preface

    Module. How to use this Manual The TOBY-L1 series System Integration Manual provides the necessary information to successfully design and configure the u-blox wireless modules. This manual has a modular structure. It is not necessary to read it from the beginning to the end.

  • Page 4: Table Of Contents

    TOBY-L1 series - System Integration Manual Contents Preface ..........................3 Contents ..........................4 System description ....................... 7 Overview .............................. 7 Architecture ............................9 1.2.1 Internal blocks ..........................10 Pin-out ............................... 11 Operating modes ..........................13 Supply interfaces ..........................15 1.5.1 Module supply input (VCC) ......................
  • Page 5 2.11 ESD guidelines ..........................62 2.11.1 ESD immunity test overview ......................62 2.11.2 ESD immunity test of u-blox TOBY-L1 series reference designs ............ 62 2.11.3 ESD application circuits ........................ 63 2.12 Schematic for TOBY-L1 series module integration ................65 2.13 Design-in checklist ..........................
  • Page 6 TOBY-L1 series - System Integration Manual Product Testing......................77 u-blox in-series production test ......................77 Test parameters for OEM manufacturer ....................77 5.2.1 “Go/No go” tests for integrated devices ..................78 5.2.2 Functional tests providing RF operation ..................78 Appendix .......................... 80 A Glossary ........................

  • Page 7: System Description

    1 System description Overview The TOBY-L1 series comprises LTE-only modules in the very small LGA form-factor (35.6 x 24.8 x 2.6 mm) that are easy to integrate in compact designs. TOBY-L1 series wireless modules provide 4G LTE-only data communication supports up to three LTE-FDD bands: ...
  • Page 8 TOBY-L1 series - System Integration Manual Table 2 reports a summary of LTE characteristics of TOBY-L1 series modules. 4G LTE Characteristics 3GPP Release 9 - Long Term Evolution (LTE) Evolved Universal Terrestrial Radio Access (E-UTRA) Frequency Division Duplex (FDD) Multi-Input Multi-Output (MIMO) 2 x 2 antenna support Band support: ...

  • Page 9: Architecture

    TOBY-L1 series - System Integration Manual Architecture Filter Duplexer (U)SIM Card 26 MHz Filter Filter Switch ANT1 Filter 32.768 kHz Duplexer Filter Filter Transceiver Wireless Base-band Filter Filter GPIO * Processor Switch Memory ANT2 Filter Filter VCC (Supply) Power On...

  • Page 10: Internal Blocks

     Low power idle-mode support TOBY-L1 series modules are provided with an internal 32.768 kHz crystal oscillator to provide the clock reference in the low power idle-mode, which can be set with power saving configuration enabled by the AT+UPSV command.

  • Page 11: Pin-Out

    TOBY-L1 series - System Integration Manual Pin-out Table 3 lists the pin-out of the TOBY-L1 series modules, with pins grouped by function. Function Pin Name Module Pin No Description Remarks Power 70,71,72 Module supply VCC pins are internally connected each other.
  • Page 12 1, 4, 6-19, RESERVED pin Leave unconnected. 26, 29, 31, See section 2.7 33-43, 45, 47-55, 62- 68, 75, 77, 84, 91 Table 3: TOBY-L1 series modules pin definition, grouped by function UBX-13001482 Objective Information System description Page 12 of 85...

  • Page 13: Operating Modes

    TOBY-L1 series - System Integration Manual Operating modes TOBY-L1 modules have several operating modes. The operating modes are defined in Table 4 and described in details in Table 5, providing general guidelines for operation. General Status Operating Mode Definition Power-down Not-Powered Mode VCC supply not present or below operating range: module is switched off.
  • Page 14 TOBY-L1 series - System Integration Manual Operating Mode Description Transition between operating modes Airplane-Mode The module is ready to communicate with an external When the module is commanded to enter airplane-mode device by means of the USB interface. from idle-mode by AT+CFUN=0 The module cannot register or connect to network.

  • Page 15: Supply Interfaces

    V_INT digital interface supply and VSIM SIM card supply. During operation, the current drawn by the TOBY-L1 series modules through the VCC pins can vary by several orders of magnitude. This range from the high peak of current consumption during LTE transmission bursts at maximum power level in connected-mode (as described in the chapter 1.5.1.2), to the low current consumption...
  • Page 16 TOBY-L1 series - System Integration Manual Current [A] 1900 mA Peak current depends on TX power 200 mA 60-120 mA 60-120 mA 10-40 mA unused unused unused unused unused unused unused unused unused unused Time [ms] slot slot slot slot...
  • Page 17 TOBY-L1 series - System Integration Manual 1.5.1.3 VCC current consumption in power save-mode (power saving enabled) The power saving configuration is by default disabled, but it can be enabled using the appropriate AT command (refer to TOBY-L1xx AT Commands Manual [2], AT+UPSV command). When power saving is enabled, the module automatically enters power save-mode whenever possible, reducing current consumption.
  • Page 18 TOBY-L1 series - System Integration Manual 1.5.1.4 VCC current consumption in fixed active-mode (power saving disabled) Power saving configuration is by default disabled, or it can be disabled using the appropriate AT command (refer to TOBY-L1xx AT Commands Manual [2], AT+UPSV command). When power saving is disabled, the module does not automatically enter power save-mode whenever possible: the module remains in idle-mode.

  • Page 19: Supply Output (V_Bckp)

    Down V_INT Figure 8: TOBY-L1 series interfaces supply output (V_INT) simplified block diagram The internal regulator that generates the V_INT supply is a switching step-down converter that is directly supplied from VCC. The voltage regulator output is set to 1.8 V (typical) when the module is switched on and it is disabled when the module is switched off.

  • Page 20: System Function Interfaces

    (which is not available on a module pin) is still low and all the digital pins of the module are held in reset state. The reset state of all the digital pins is reported in the pin description table of TOBY-L1 Series Data Sheet [1].

  • Page 21: Module Power-Off

    TOBY-L1 series - System Integration Manual The Internal Reset signal is available as soon as low level on PWR_ON pin is applyed, you can also monitor the V_INT pin to sense start of the TOBY-L1 series power-on sequence. 1.6.2 Module power-off An under-voltage shutdown occurs on TOBY-L1 modules when the VCC supply is removed, but in this case the current parameter settings are not saved in the module’s non-volatile memory and a proper network detach...
  • Page 22 The reset state of all digital pins is reported in the pin description table in TOBY-L1 series Data Sheet [1]. As described in Figure 11, the module has an internal pull-up resistor which pulls the line to the high logic level when the RESET_N pin is not forced low from the external.

  • Page 23: Antenna Interface

    Table 7 summarizes the requirements for the antenna RF interface (ANT). Refer to section 2.3.1 for suggestions to properly design an antenna circuit compliant to these requirements. The antenna circuit affects the RF compliance of the device integrating TOBY-L1 series module with applicable required certification schemes. Compliance is guaranteed if the antenna RF interface (ANT1 / ANT2 ) requirements summarized in Table 7 are fulfilled.
  • Page 24 TOBY-L1 series - System Integration Manual The SIM card detection function determined via firmware after power on of module. UBX-13001482 Objective Information System description Page 24 of 85...

  • Page 25: Serial Interfaces

    TOBY-L1 series - System Integration Manual Serial interfaces TOBY-L1 series modules provide the following serial communication interface:  USB interface: 4-wire 1.9.1 USB TOBY-L1 modules provide a high-speed USB interface at 480 Mb/s compliant with the Universal Serial Bus Revision 2.0 specification [4]. It acts as a USB device and can be connected to any USB host such as a PC or other Application Processor.
  • Page 26 TOBY-L1 series - System Integration Manual USB CDC/ACM drivers are available for the following operating system platforms:  Windows XP  Windows 7  Standard Linux/Android USB kernel drivers TOBY-L1 module identifies itself by its VID (Vendor ID) and PID (Product ID) combination, included in the USB device descriptor.

  • Page 27: General Purpose Input/Output (Gpio)

    TOBY-L1 series - System Integration Manual 1.10 General Purpose Input/Output (GPIO) TOBY-L1 modules may support functionality in future software release. 1.11 Reserved pins (RSVD) TOBY-L1 modules have pins reserved for future use: they can all be left unconnected on the application board.

  • Page 28: System Features

    TOBY-L1 series - System Integration Manual 1.12 System features 1.12.1 Network indication Not supported by TOBY-L1 modules. UBX-13001482 Objective Information System description Page 28 of 85...

  • Page 29: Tcp/Ip And Udp/Ip

    TOBY-L1 series - System Integration Manual 1.12.2 TCP/IP and UDP/IP Via the AT commands it is possible to access the TCP/IP and UDP/IP functionalities over the Packet Switched data connection. For more details about AT commands see the TOBY-L1xx AT Commands Manual [2].
  • Page 30 For the complete description of the AT+UPSV command, refer to the TOBY-L1xx AT Commands Manual [2]. For the definition and the description of TOBY-L1 series modules operating modes, including the events forcing transitions between the different operating modes, refer to the chapter 1.4.

  • Page 31: Design-In

    TOBY-L1 series - System Integration Manual 2 Design-in For an optimal integration of TOBY-L1 modules in the final application board follow the design guidelines stated in this chapter. Every application circuit must be properly designed to guarantee the correct functionality of the relative interface, however a number of points require high attention during the design of the application device.

  • Page 32: Supply Interfaces

    TOBY-L1 series - System Integration Manual Supply interfaces 2.1.1 Module supply (VCC) 2.1.1.1 General guidelines for VCC supply circuit selection and design VCC pins are internally connected, but connect all the available pads to the external supply to minimize the power loss due to series resistance.
  • Page 33 The usage of a regulator or a battery not able to withstand the maximum peak current consumption specified in the TOBY-L1 series Data Sheet [1] is generally not recommended. However, if the selected regulator or battery is not able to withstand the maximum peak current of the module, it must be able to considerably withstand at...
  • Page 34 TOBY-L1 series - System Integration Manual Figure 13 and the components listed in Table 9 show an example of a high reliability power supply circuit, where Please leave width at 16.9cm (17cm = .docx page width) to preserve 1:1 scaling the module VCC is supplied by a step-down switching regulator capable of delivering 1.9 A current pulses with...
  • Page 35 TOBY-L1 series - System Integration Manual Figure 14 and the components listed in Table 10 show an example of a low cost power supply circuit, where the Please leave width at 16.9cm (17cm = .docx page width) to preserve 1:1 scaling VCC module supply is provided by a step-down switching regulator capable of delivering 1.9 A current pulses,...
  • Page 36 TOBY-L1 series - System Integration Manual  Output voltage slope: the use of the soft start function provided by some voltage regulator should be carefully evaluated, since the VCC pins voltage must ramp from 2.5 V to 3.2 V within 4 ms to switch-on the...
  • Page 37 TOBY-L1 series - System Integration Manual  Maximum pulse and DC discharge current: the non-rechargeable battery with its output circuit must be capable of delivering 1.9 A current pulses with 1/8 duty-cycle to the VCC pins and must be capable of delivering a DC current greater than the module maximum average current consumption at the VCC pins.
  • Page 38 TOBY-L1 series - System Integration Manual TOBY-L1 series Figure 16: Suggested schematic and layout design for the VCC bypass capacitors to reduce ripple / noise on VCC voltage profile and to avoid undershoot / overshoot on VCC voltage drops Reference...
  • Page 39 TOBY-L1 series - System Integration Manual Li-Ion/Li-Polymer TOBY-L1 series Battery Charger Supply INSNS OSNS Li-Ion/Li-Pol Battery MODE Pack ISEL θ Figure 17: Li-Ion (or Li-Polymer) battery charging application circuit Reference Description Part Number - Manufacturer Li-Ion (or Li-Polymer) battery pack with 470  NTC...

  • Page 40: Supply (V_Bckp)

    RF signal. This is more likely to happen with switching DC-DC converters, in which case it is better to select the highest operating frequency for the switcher and add a large L-C filter before connecting to the TOBY-L1 series modules in the worst case ...

  • Page 41: Supply (V_Int)

    Indicate when the module is switched on Do not apply loads which might exceed the limit for maximum available current from V_INT supply, as this can cause malfunctions in internal circuitry supplies to the same domain. TOBY-L1 series Data Sheet [1] describes the detailed electrical characteristics.

  • Page 42: System Functions Interfaces

    V_BCKP pin (refer to TOBY-L1 series Data Sheet [1]), the V_BCKP supply cannot be used to bias the pull-up resistor: the supply rail of the application processor or the module VCC supply could be used, but this increases the V_BCKP current consumption when the module is in not-powered mode (VCC supply not present).

  • Page 43: Module Reset (Reset_N)

    TOBY-L1 series - System Integration Manual 2.2.1.3 Guidelines for PWR_ON layout design The power-on circuit (PWR_ON) requires careful layout since it is the sensitive input available to switch on the TOBY-L1 modules until a valid VCC supply is provided after that the module has been switched off by means of the AT+CPWROFF command: ensure that the voltage level is well defined during operation and no transient noise is coupled on this line, otherwise the module might detect a spurious power-on request.
  • Page 44 TOBY-L1 series - System Integration Manual 2.2.2.2 Guidelines for RESET_N layout design The reset circuit (RESET_N) requires careful layout due to the pin function: ensure that the voltage level is well defined during operation and no transient noise is coupled on this line, otherwise the module might detect a spurious reset request.

  • Page 45: Antenna Interface

    TOBY-L1 series - System Integration Manual Antenna interface The ANT1 ANT2 pins, provided by all TOBY-L1 modules, represent the main RF inputs/output used to transmit and receive the LTE RF signals. The primary antenna must be connected. The ANT pin has a nominal characteristic impedance of 50 ...
  • Page 46 TOBY-L1 series - System Integration Manual  Select an antenna providing appropriate gain figure (i.e. combined antenna directivity and efficiency figure) so that the electromagnetic field radiation intensity do not exceed the regulatory limits specified in some countries (e.g. by FCC in the United States, as reported in the chapter 4.2.2).
  • Page 47 TOBY-L1 series - System Integration Manual Figure 21 and Figure 22 provide two examples of proper 50  coplanar waveguide designs: the first transmission line can be implemented in case of 4-layer PCB stack-up herein described, the second transmission line can be implemented in case of 2-layer PCB stack-up herein described.
  • Page 48 TOBY-L1 series - System Integration Manual Additionally to the 50  impedance, the following guidelines are recommended for the transmission line design:  Minimize the transmission line length: the insertion loss should be minimized as much as possible, in the order of a few tenths of a dB, ...
  • Page 49 TOBY-L1 series - System Integration Manual If an external antenna is used, the antenna connector represents the RF termination on the PCB:  Use a suitable 50  connector providing proper PCB-to-RF-cable transition  Strictly follow the connector manufacturer’s recommended layout, for example: SMA Pin-Through-Hole connectors require GND keep-out (i.e.

  • Page 50: Sim Interface

    TOBY-L1 series - System Integration Manual SIM interface 2.4.1.1 Guidelines for SIM circuit design Guidelines for SIM cards, SIM connectors and SIM chips selection The ISO/IEC 7816, the ETSI TS 102 221 and the ETSI TS 102 671 specifications define the physical, electrical and...
  • Page 51 TOBY-L1 series - System Integration Manual Guidelines for single SIM card connection without detection A removable SIM card placed in a SIM card holder must be connected the SIM card interface of TOBY-L1 modules as described in Figure 24, where the optional SIM detection feature is not implemented (refer to the circuit described in Error! Reference source not found.
  • Page 52 TOBY-L1 series - System Integration Manual Guidelines for single SIM chip connection A solderable SIM chip (M2M UICC Form Factor) must be connected the SIM card interface of TOBY-L1 modules as described in Figure 25, where the optional SIM detection feature is not implemented (refer to the circuit described in Error! Reference source not found.
  • Page 53 The layout of the SIM card interface lines (VSIM, SIM_CLK, SIM_IO, SIM_RST) may be critical if the SIM card is placed far away from the TOBY-L1 series modules or in close proximity to the RF antenna: these two cases should be avoided or at least mitigated as described below.

  • Page 54: Serial Interfaces

    TOBY-L1 series - System Integration Manual Serial interfaces 2.5.1 USB interface 2.5.1.1 Guidelines for USB circuit design The USB_D+ and USB_D- lines carry the USB serial data and signaling. The lines are used in single ended mode for full speed signaling handshake, as well as in differential mode for high speed signaling and data transfer.
  • Page 55 TOBY-L1 series - System Integration Manual 2.5.1.2 Guidelines for USB layout design The USB_D+ / USB_D- lines require accurate layout design to achieve reliable signaling at the high speed data rate (up to 480 Mb/s) supported by the USB serial interface.

  • Page 56: General Purpose Input/Output (Gpio)

    TOBY-L1 series - System Integration Manual General Purpose Input/Output (GPIO) 2.6.1.1 Guidelines for GPIO circuit design The following application circuits are suggested as general guideline for the usage of the GPIO pins available with the TOBY-L1 modules, according to the relative custom function.

  • Page 57: Reserved Pins (Rsvd)

    TOBY-L1 series - System Integration Manual Reserved pins (RSVD) TOBY-L1 series modules have pins reserved for future use. All the RSVD pins are to be left unconnected on the application board. Module placement Optimize placement for minimum length of RF line and closer path from DC source for VCC.

  • Page 58: Module Footprint And Paste Mask

    O’’ Stencil: 150 H’ H’’ µm J’ J’’ F’ F’’ F’ F’’ Figure 29: TOBY-L1 series modules suggested footprint and paste mask (application board top view) Parameter Value Parameter Value Parameter Value 26.0 mm 1.10 mm 2.75 mm 16.0 mm H’...
  • Page 59 TOBY-L1 series - System Integration Manual UBX-13001482 Objective Information Design-in Page 59 of 85...

  • Page 60: Thermal Guidelines

    Mounting a TOBY-L1 series module on a 79 mm x 62 mm x 1.41 mm 4-Layers PCB with a high coverage of copper in still air conditions...
  • Page 61 ~1 °C during a LTE connection (1 TX slot, 1 RX slot) at the maximum TX power Beside the reduction of the Module-to-Ambient thermal resistance implemented by the hardware design of the application device integrating a TOBY-L1 series module, the increase of module temperature can be moderated by the software implementation of the application.

  • Page 62: Esd Guidelines

    EN 61000-4-2 [6], ETSI EN 301 489-1 [7], ETSI EN 301 489-7 [8], ETSI EN 301 489-24 [9] European Norms. The EMC / ESD approved u-blox reference designs consist of a TOBY-L1 series module soldered onto a motherboard which provides supply interface, SIM card, headset and communication port. An external antenna is connected to an SMA connector provided on the motherboard for the LTE antenna.

  • Page 63: Esd Application Circuits

    Antenna interface The ANT pin of TOBY-L1 series modules provides ESD immunity up to ±4 kV for direct Contact Discharge and up to ±8 kV for Air Discharge: no further precaution to ESD immunity test is needed, as implemented in the EMC / ESD approved reference design of TOBY-L1 series modules.
  • Page 64 Other pins and interfaces All the module pins that are externally accessible on the device integrating TOBY-L1 series module should be included in the ESD immunity test since they are considered to be a port as defined in ETSI EN 301 489-1 [7].

  • Page 65: Schematic For Toby-L1 Series Module Integration

    TOBY-L1 series - System Integration Manual Please leave width at 16.9cm (17cm = .docx page width) to preserve 1:1 scaling 2.12 Schematic for TOBY-L1 series module integration Figure 30 is an example of a schematic diagram where a TOBY-L100 module is integrated into an application...
  • Page 66 TOBY-L1 series - System Integration Manual UBX-13001482 Objective Information Design-in Page 66 of 85...

  • Page 67: Design-In Checklist

    TOBY-L1 series - System Integration Manual 2.13 Design-in checklist This section provides a design-in checklist. 2.13.1 Schematic checklist The following are the most important points for a simple schematic check:  DC supply must provide a nominal voltage at VCC pin above the minimum operating range limit.

  • Page 68: Layout Checklist

    TOBY-L1 series - System Integration Manual 2.13.2 Layout checklist The following are the most important points for a simple layout check:  Check 50  nominal characteristic impedance of the RF transmission line connected to the ANT pad (antenna RF input/output interface).

  • Page 69: Handling And Soldering

    Packaging, shipping, storage and moisture preconditioning For information pertaining to reels and tapes, Moisture Sensitivity levels (MSD), shipment and storage information, as well as drying for preconditioning see the TOBY-L1 series Data Sheet [1] and the u-blox Package Information Guide Error! Reference source not found..
  • Page 70 3°C/s 60 - 120 s Typical Leadfree Soldering Profile Elapsed time [s] Figure 31: Recommended soldering profile TOBY-L1 series modules must not be soldered with a damp heat process. UBX-13001482 Objective Information Handling and soldering Page 70 of 85...

  • Page 71: Optical Inspection

    Certain applications employ a conformal coating of the PCB using HumiSeal or other related coating products. These materials affect the HF properties of the TOBY-L1 series modules and it is important to prevent them from flowing into the module. The RF shields do not provide 100% protection for the module from coating liquids with low viscosity, therefore care is required in applying the coating.

  • Page 72: Casting

    EMI covers is done at the customer's own risk. The numerous ground pins should be sufficient to provide optimum immunity to interferences and noise. u-blox gives no warranty for damages to the TOBY-L1 series modules caused by soldering metal cables or any other forms of metal strips directly onto the EMI covers.

  • Page 73: Approvals

    The required certification scheme approvals and relative testing specifications differ depending on the country or the region where the device that integrates TOBY-L1 series modules must be deployed, on the relative vertical market of the device, on type, features and functionalities of the whole application device, and on the network operators where the device must operate.

  • Page 74: Federal Communications Commission And Industry Canada Notice

    The gain of the system antenna(s) used for the TOBY-L1 series modules (i.e. the combined transmission line, connector, cable losses and radiating element gain) must not exceed 10.7 dBi (for LTE band 13) and 6.57 dBi (for LTE band 4) for mobile and fixed or mobile operating...
  • Page 75 Additional Canadian information on RF exposure also can be found at the following web address: http://www.ic.gc.ca/eic/site/smt-gst.nsf/eng/sf08792.html IMPORTANT: Manufacturers of portable applications incorporating the TOBY-L1 series modules are required to have their final product certified and apply for their own FCC Grant and Industry Canada Certificate related to the specific portable device.

  • Page 76: R&Tted And European Conformance Ce Mark

    TOBY-L1 series - System Integration Manual R&TTED and European Conformance CE mark This device has been evaluated against the essential requirements of the 1999/5/EC Directive. In order to satisfy the essential requirements of 1999/5/EC Directive, the module is compliant with the following standards: ...

  • Page 77: Product Testing

    TOBY-L1 series - System Integration Manual 5 Product Testing u-blox in-series production test u-blox focuses on high quality for its products. All units produced are fully tested. Defective units are analyzed in detail to improve the production quality. This is achieved with automatic test equipment, which delivers a detailed test report for each unit. The following measurements are done: ...

  • Page 78: Go/No Go" Tests For Integrated Devices

    TOBY-L1 series - System Integration Manual  Component assembly on the device; it should be verified that: Communication with host controller can be established The interfaces between module and device are working Overall RF performance test of the device including antenna Dedicated tests can be implemented to check the device.
  • Page 79 TOBY-L1 series - System Integration Manual Wireless Wideband Antenna Antenna Application TOBY-L1 Processor series Commands Spectrum Analyzer Application Board Wireless Wideband Antenna Antenna Application TOBY-L1 Processor series Commands Signal Generetor Application Board Figure 33: Setup with spectrum analyzer and signal generator for radiated measurement...

  • Page 80: Appendix

    TOBY-L1 series - System Integration Manual Appendix UBX-13001482 Objective Information Appendix Page 80 of 85...

  • Page 81: A Glossary

    TOBY-L1 series - System Integration Manual A Glossary 3GPP 3rd Generation Partnership Project Analog to Digital Converter Application Processor AT Command Interpreter Software Subsystem, or attention Coding Scheme Circuit Switched Data Clear To Send Direct Current Data Carrier Detect Data Communication Equipment...
  • Page 82 TOBY-L1 series - System Integration Manual Inter-Integrated Circuit interface Inter IC Sound interface Internet Protocol Leadless Chip Carrier Low-Dropout Land Grid Array Low Noise Amplifier Machine-to-Machine Modulation Coding Scheme Not Applicable N.A. Not Available Power Amplifier Pulse Code Modulation PCN / IN...

  • Page 83: Related Documents

    TOBY-L1 series - System Integration Manual Related documents u-blox TOBY-L1 series Data Sheet, Docu No UBX-13000868 u-blox TOBY-L1 series AT Commands Manual, Docu No UBX-13002211 3GPP TS 27.007 – AT command set for User Equipment (UE) (Release 1999) Universal Serial Bus Revision 2.0 specification, http://www.usb.org/developers/docs/ 3GPP TS 51.010-2 –...

  • Page 84: Revision History

    TOBY-L1 series - System Integration Manual Revision history Revision Date Name Status / Comments 02 May 2013 rcam Initial Release UBX-13001482 Objective Information Revision history Page 84 of 85...

  • Page 85: Contact

    TOBY-L1 series - System Integration Manual Contact For complete contact information visit us at www.u-blox.com u-blox Offices North, Central and South America Headquarters Asia, Australia, Pacific Europe, Middle East, Africa u-blox America, Inc. u-blox Singapore Pte. Ltd. u-blox AG Phone:...

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