Table Of Contents; Contents - Quectel LTE-A Series Hardware Design

Contents

About the Document ................................................................................................................................... 2
Contents ....................................................................................................................................................... 3
Table Index ................................................................................................................................................... 6
Figure Index ................................................................................................................................................. 8
1 Introduction ........................................................................................................................................ 10
1.1. Safety Information.................................................................................................................... 11
2 Product Concept ................................................................................................................................ 12
2.1. General Description ................................................................................................................. 12
2.2. Key Features ........................................................................................................................... 14
2.3. Functional Diagram ................................................................................................................. 16
2.4. Evaluation Board ..................................................................................................................... 17
3 Application Interfaces ....................................................................................................................... 18
3.1. Pin Assignment ........................................................................................................................ 19
3.2. Pin Description ......................................................................................................................... 20
3.3. Operating Modes ..................................................................................................................... 31
3.4. Power Saving ........................................................................................................................... 32
3.4.1. Sleep Mode .................................................................................................................... 32
3.4.1.1.
3.4.1.2.
3.4.1.3.
3.4.1.4.
3.4.2. Airplane Mode ................................................................................................................ 35
3.5. Power Supply ........................................................................................................................... 36
3.5.1. Power Supply Pins ......................................................................................................... 36
3.5.2. Decrease Voltage Drop .................................................................................................. 37
3.5.3. Reference Design for Power Supply .............................................................................. 38
3.5.4. Monitor the Power Supply .............................................................................................. 38
3.6. Turn on and off Scenarios ....................................................................................................... 39
3.6.1. Turn on the Module Through PWRKEY ......................................................................... 39
3.6.2. Turn off the Module ........................................................................................................ 41
3.6.2.1.
3.6.2.2.
3.7. Reset the Module..................................................................................................................... 42
3.8. (U)SIM Interfaces..................................................................................................................... 44
3.9. USB Interface .......................................................................................................................... 47
3.10. UART Interfaces ...................................................................................................................... 50
3.10.1. Main UART Interface ...................................................................................................... 50
3.10.2. Debug UART Interface ................................................................................................... 51
3.10.3. BT UART Interface ......................................................................................................... 51
3.10.4. UART Application ........................................................................................................... 51
EG18_Hardware_Design
UART Application ................................................................................................. 32
USB Application with USB Remote Wakeup Function ........................................ 33
USB Application with USB Suspend/Resume and RI Function .......................... 34
USB Application without USB Suspend Function ................................................ 34
Turn off the Module Through PWRKEY .............................................................. 41
Turn off the Module Through AT Command ........................................................ 41
LTE-A Module Series
EG18 Hardware Design
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