Manuali utente per Quectel Wireless Solutions Company Limited 201807EG95NA

Sommario

• About the Document

  3
• Contents

  5
• Table Index

  7
• Figure Index

  8
• 1 Introduction

  10
  • 1.1. Safety Information

    11
• 2 Product Concept

  12
  • 2.1. General Description

    12
  • 2.2. Key Features

    13
  • 2.3. Functional Diagram

    15
  • 2.4. Evaluation Board

    16
• 3 Application Interfaces

  17
  • 3.1. General Description

    17
  • 3.2. Pin Assignment

    18
  • 3.3. Pin Description

    19
  • 3.4. Operating Modes

    25
  • 3.5. Power Saving

    25
    • 3.5.1. Sleep Mode

      25
      • 3.5.1.1. UART Application

        26
      • 3.5.1.2. USB Application with USB Remote Wakeup Function

        26
      • 3.5.1.3. USB Application with USB Suspend/Resume and RI Function

        27
      • 3.5.1.4. USB Application without USB Suspend Function

        28
    • 3.5.2. Airplane Mode

      28
  • 3.6. Power Supply

    29
    • 3.6.1. Power Supply Pins

      29
    • 3.6.2. Decrease Voltage Drop

      30
    • 3.6.3. Reference Design for Power Supply

      31
    • 3.6.4. Monitor the Power Supply

      31
  • 3.7. Turn on and off Scenarios

    31
    • 3.7.1. Turn on Module Using the PWRKEY

      31
    • 3.7.2. Turn off Module

      33
      • 3.7.2.1. Turn off Module Using the PWRKEY Pin

        33
      • 3.7.2.2. Turn off Module Using AT Command

        34
  • 3.8. Reset the Module

    34
  • 3.9. (U)SIM Interfaces

    36
  • 3.10. USB Interface

    39
  • 3.11. UART Interfaces

    41
  • 3.12. PCM and I2C Interfaces

    43
  • 3.13. SPI Interface

    46
  • 3.14. Network Status Indication

    46
  • 3.15. STATUS

    47
  • 3.16. Behaviors of RI

    48
• 4 GNSS Receiver

  49
  • 4.1. General Description

    49
  • 4.2. GNSS Performance

    49
  • 4.3. Layout Guidelines

    50
• 5 Antenna Interfaces

  51
  • 5.1. Main/Rx-diversity Antenna Interfaces

    51
    • 5.1.1. Pin Definition

      51
    • 5.1.2. Operating Frequency

      51
    • 5.1.3. Reference Design of RF Antenna Interface

      52
    • 5.1.4. Reference Design of RF Layout

      53
  • 5.2. GNSS Antenna Interface

    55
  • 5.3. Antenna Installation

    56
    • 5.3.1. Antenna Requirement

      56
    • 5.3.2. Recommended RF Connector for Antenna Installation

      57
• 6 Electrical, Reliability and Radio Characteristics

  59
  • 6.1. Absolute Maximum Ratings

    59
  • 6.2. Power Supply Ratings

    59
  • 6.3. Operation and Storage Temperatures

    60
  • 6.4. Current Consumption

    61
  • 6.5. RF Output Power

    64
  • 6.6. RF Receiving Sensitivity

    65
  • 6.7. Electrostatic Discharge

    66
  • 6.8. Thermal Consideration

    67
• 7 Mechanical Dimensions

  69
  • 7.1. Mechanical Dimensions of the Module

    69
  • 7.2. Recommended Footprint

    71
  • 7.3. Design Effect Drawings of the Module

    72
• 8 Storage, Manufacturing and Packaging

  73
  • 8.1. Storage

    73
  • 8.2. Manufacturing and Soldering

    74
  • 8.3. Packaging

    75
• 9 Appendix A References

  76
• 10 Appendix B GPRS Coding Schemes

  79
• 11 Appendix C GPRS Multi-slot Classes

  80
• 12 Appendix D EDGE Modulation and Coding Schemes

  82