用户手册目录About the Document3Contents5Table Index7Figure Index81 Introduction101.1. Safety Information112 Product Concept122.1. General Description122.2. Key Features132.3. Functional Diagram152.4. Evaluation Board163 Application Interfaces173.1. General Description173.2. Pin Assignment183.3. Pin Description193.4. Operating Modes253.5. Power Saving253.5.1. Sleep Mode253.5.1.1. UART Application263.5.1.2. USB Application with USB Remote Wakeup Function263.5.1.3. USB Application with USB Suspend/Resume and RI Function273.5.1.4. USB Application without USB Suspend Function283.5.2. Airplane Mode283.6. Power Supply293.6.1. Power Supply Pins293.6.2. Decrease Voltage Drop303.6.3. Reference Design for Power Supply313.6.4. Monitor the Power Supply313.7. Turn on and off Scenarios313.7.1. Turn on Module Using the PWRKEY313.7.2. Turn off Module333.7.2.1. Turn off Module Using the PWRKEY Pin333.7.2.2. Turn off Module Using AT Command343.8. Reset the Module343.9. (U)SIM Interfaces363.10. USB Interface393.11. UART Interfaces413.12. PCM and I2C Interfaces433.13. SPI Interface463.14. Network Status Indication463.15. STATUS473.16. Behaviors of RI484 GNSS Receiver494.1. General Description494.2. GNSS Performance494.3. Layout Guidelines505 Antenna Interfaces515.1. Main/Rx-diversity Antenna Interfaces515.1.1. Pin Definition515.1.2. Operating Frequency515.1.3. Reference Design of RF Antenna Interface525.1.4. Reference Design of RF Layout535.2. GNSS Antenna Interface555.3. Antenna Installation565.3.1. Antenna Requirement565.3.2. Recommended RF Connector for Antenna Installation576 Electrical, Reliability and Radio Characteristics596.1. Absolute Maximum Ratings596.2. Power Supply Ratings596.3. Operation and Storage Temperatures606.4. Current Consumption616.5. RF Output Power646.6. RF Receiving Sensitivity656.7. Electrostatic Discharge666.8. Thermal Consideration677 Mechanical Dimensions697.1. Mechanical Dimensions of the Module697.2. Recommended Footprint717.3. Design Effect Drawings of the Module728 Storage, Manufacturing and Packaging738.1. Storage738.2. Manufacturing and Soldering748.3. Packaging759 Appendix A References7610 Appendix B GPRS Coding Schemes7911 Appendix C GPRS Multi-slot Classes8012 Appendix D EDGE Modulation and Coding Schemes82文件大小: 1.5 MB页数: 87Language: English打开用户手册