Quectel EM05, Проектирование аппаратного обеспечения

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LTE Module Series
EM05 Hardware Design
EM05_Hardware_Design Confidential / Released 3 / 59
Contents
About the Document ................................................................................................................................... 2
Contents ....................................................................................................................................................... 3
Table Index ................................................................................................................................................... 5
Figure Index ................................................................................................................................................. 6
1 Introduction .......................................................................................................................................... 7
1.1. Safety Information...................................................................................................................... 8
2 Product Concept .................................................................................................................................. 9
2.1. General Description ................................................................................................................... 9
2.2. Key Features ........................................................................................................................... 10
2.3. Functional Diagram ................................................................................................................. 12
3 Application Interfaces ....................................................................................................................... 13
3.1. Pin Assignment ........................................................................................................................ 14
3.2. Pin Description ......................................................................................................................... 15
3.3. Operating Modes ..................................................................................................................... 19
3.4. Power Saving ........................................................................................................................... 19
3.4.1. Sleep Mode .................................................................................................................... 19
3.4.1.1. USB Application with USB Remote Wakeup Function ........................................ 20
3.4.1.2. USB Application with USB Suspend/Resume and WOWWAN# Functions ........ 20
3.4.2. Airplane Mode ................................................................................................................ 21
3.5. Power Supply ........................................................................................................................... 22
3.5.1. Decrease Voltage Drop .................................................................................................. 22
3.5.2. Reference Design for Power Supply .............................................................................. 23
3.5.3. Monitor the Power Supply .............................................................................................. 24
3.6. Turn on and off Scenarios ....................................................................................................... 24
3.6.1. Turn on the Module Using the FUL_CARD_POWER_OFF# ........................................ 24
3.6.2. Turn off the Module ........................................................................................................ 26
3.6.2.1. Turn off the Module Using the FUL_CARD_POWER_OFF# Pin ........................ 26
3.6.2.2. Turn off the Module Using AT Command ............................................................. 26
3.7. Reset the Module..................................................................................................................... 27
3.8. (U)SIM Interface ...................................................................................................................... 29
3.9. USB Interface .......................................................................................................................... 32
3.10. PCM and I2C Interfaces .......................................................................................................... 33
3.11. Control and Indicator Signals .................................................................................................. 35
3.11.1. W_DISABLE1# Signal.................................................................................................... 36
3.11.2. LED# Signal ................................................................................................................... 36
3.11.3. WOWWAN# Signal ........................................................................................................ 37
3.11.4. DPR Signal* ................................................................................................................... 38
3.12. Configuration Pins ................................................................................................................... 39
4 GNSS Receiver ................................................................................................................................... 40
Quectel
Confidential