Table Of Contents; Contents - Quectel EG91 Series Hardware Design

Contents

About the Document ................................................................................................................................
Contents ....................................................................................................................................................
Table Index ...............................................................................................................................................
Figure Index ..............................................................................................................................................
1
Introduction .....................................................................................................................................
1.1. Safety Information .................................................................................................................
1.2. FCC/ISED Regulatory notices ...............................................................................................
2
Product Concept .............................................................................................................................
2.1. General Description ..............................................................................................................
2.2. Key Features .........................................................................................................................
2.3. Functional Diagram ...............................................................................................................
2.4. Evaluation Board ...................................................................................................................
3
Application Interfaces .....................................................................................................................
3.1. General Description ..............................................................................................................
3.2. Pin Assignment .....................................................................................................................
3.3. Pin Description ......................................................................................................................
3.4. Operating Modes ..................................................................................................................
3.5. Power Saving ........................................................................................................................
3.5.1. Sleep Mode..................................................................................................................
3.5.1.1.
3.5.1.2.
3.5.1.3.
3.5.1.4.
3.5.2. Airplane Mode ..............................................................................................................
3.6. Power Supply ........................................................................................................................
3.6.1. Power Supply Pins .......................................................................................................
3.6.2. Decrease Voltage Drop ................................................................................................
3.6.3. Reference Design for Power Supply ............................................................................
3.6.4. Monitor the Power Supply ............................................................................................
3.7. Power-on/off Scenarios .........................................................................................................
3.7.1. Turn on Module Using the PWRKEY ...........................................................................
3.7.2. Turn off Module ............................................................................................................
3.7.2.1.
3.7.2.2.
3.8. Reset the Module ..................................................................................................................
3.9. (U)SIM Interfaces ..................................................................................................................
3.10. USB Interface ........................................................................................................................
3.11. UART Interfaces ...................................................................................................................
EG91_Hardware_Design
UART Application ...............................................................................................
USB Application with USB Remote Wakeup Function .......................................
USB Application with USB Suspend/Resume and RI Function ..........................
USB Application without USB Suspend Function ...............................................
Turn off Module Using the PWRKEY Pin ...........................................................
Turn off Module Using AT Command .................................................................
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