Product Info

LTE Module Series
EG61-NA Hardware Design
EG61-NA_Hardware_Design 3 / 77
Contents
About the Document ................................................................................................................................ 2
Contents .................................................................................................................................................... 3
Table Index ............................................................................................................................................... 5
Figure Index .............................................................................................................................................. 6
1 Introduction ....................................................................................................................................... 8
1.1. Safety Information ................................................................................................................... 9
2 Product Concept ............................................................................................................................. 14
2.1. General Description .............................................................................................................. 14
2.2. Key Features ......................................................................................................................... 14
2.3. Functional Diagram ............................................................................................................... 17
2.4. Evaluation Board ................................................................................................................... 17
3 Application Interfaces ..................................................................................................................... 18
3.1. General Description .............................................................................................................. 18
3.2. Pin Assignment ..................................................................................................................... 19
3.3. Pin Description ...................................................................................................................... 20
3.4. Operating Modes .................................................................................................................. 27
3.5. Power Saving ........................................................................................................................ 27
3.5.1. Sleep Mode.................................................................................................................. 27
3.5.1.1. UART Application ............................................................................................... 27
3.5.1.2. USB Application with USB Remote Wakeup Function ....................................... 28
3.5.1.3. USB Application with USB Suspend/Resume and RI Function .......................... 29
3.5.1.4. USB Application without USB Suspend Function ............................................... 30
3.5.2. Airplane Mode .............................................................................................................. 30
3.6. Power Supply ........................................................................................................................ 31
3.6.1. Power Supply Pins ....................................................................................................... 31
3.6.2. Decrease Voltage Drop ................................................................................................ 32
3.6.3. Reference Design for Power Supply ............................................................................ 33
3.6.4. Monitor the Power Supply ............................................................................................ 33
3.7. Turn-on and off Scenarios ..................................................................................................... 33
3.7.1. Turn on Module Using the PWRKEY ........................................................................... 33
3.7.2. Turn off Module ............................................................................................................ 35
3.7.2.1. Turn off Module Using the PWRKEY Pin ........................................................... 36
3.7.2.2. Turn off Module Using AT Command ................................................................. 36
3.8. Reset the Module .................................................................................................................. 36
3.9. (U)SIM Interfaces .................................................................................................................. 38
3.10. USB Interface ........................................................................................................................ 41
3.11. UART Interfaces .................................................................................................................... 42
3.12. PCM and I2C Interfaces ........................................................................................................ 45
3.13. SPI Interface ......................................................................................................................... 47
3.14. Network Status Indication ..................................................................................................... 48