Quectel EC200T Series, Проектирование аппаратного обеспечения

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LTE Standard Module Series
EC200T Series Hardware Design
EC200T_Series_Hardware_Design 3 / 90
Contents
About the Document ................................................................................................................................ 2
Contents .................................................................................................................................................... 3
Table Index ............................................................................................................................................... 5
Figure Index .............................................................................................................................................. 7
1
Introduction ....................................................................................................................................... 9
1.1. Safety Information ................................................................................................................. 12
2
Product Concept ............................................................................................................................. 14
2.1. General Description .............................................................................................................. 14
2.2. Key Features ......................................................................................................................... 15
2.3. Functional Diagram ............................................................................................................... 18
2.4. Evaluation Board ................................................................................................................... 18
3
Application Interfaces ..................................................................................................................... 19
3.1. General Description .............................................................................................................. 19
3.2. Pin Assignment ..................................................................................................................... 20
3.3. Pin Description ...................................................................................................................... 21
3.4. Operating Modes .................................................................................................................. 29
3.5. Power Saving ........................................................................................................................ 29
3.5.1. Sleep Mode.................................................................................................................. 29
3.5.1.1. UART Application ............................................................................................... 30
3.5.1.2. USB Application with USB Remote Wakeup Function ....................................... 30
3.5.1.3. USB Application with USB Suspend/Resume and MAIN_RI Wakeup Function . 31
3.5.1.4. USB Application without USB Suspend Function ............................................... 32
3.5.2. Airplane Mode .............................................................................................................. 32
3.6. Power Supply ........................................................................................................................ 33
3.6.1. Power Supply Pins ....................................................................................................... 33
3.6.2. Decrease Voltage Drop ................................................................................................ 33
3.6.3. Reference Design for Power Supply ............................................................................ 34
3.7. Power-on/off/Reset Scenarios .............................................................................................. 35
3.7.1. Turn on Module Using the PWRKEY ........................................................................... 35
3.7.2. Turn off Module ............................................................................................................ 37
3.7.2.1. Turn off Module Using the PWRKEY Pin ........................................................... 38
3.7.2.2. Turn off Module Using AT Command ................................................................. 38
3.7.3. Reset the Module ......................................................................................................... 38
3.8. (U)SIM Interface .................................................................................................................... 40
3.9. USB Interface ........................................................................................................................ 43
3.10. UART Interfaces .................................................................................................................... 44
3.11. PCM and I2C Interfaces ........................................................................................................ 47
3.12. SD Card Interface ................................................................................................................. 49
3.13. WLAN Interface* ① ................................................................................................................ 51
3.14. ADC Interfaces ...................................................................................................................... 52
3.15. Network Status Indication ...................................................................................................... 53
3.16. STATUS ................................................................................................................................ 54