Quectel UG95, Hardware Design

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UMTS/HSPA Module Series
UG95 Hardware Design
UG95_Hardware_Design Confidential / Released 3 / 72
Contents
About the Document ................................................................................................................................... 2
Contents ....................................................................................................................................................... 3
Table Index ................................................................................................................................................... 5
Figure Index ................................................................................................................................................. 6
1 Introduction .......................................................................................................................................... 8
1.1. Safety Information...................................................................................................................... 9
2 Product Concept ................................................................................................................................ 10
2.1. General Description ................................................................................................................. 10
2.2. Key Features ........................................................................................................................... 11
2.3. Functional Diagram ................................................................................................................. 13
2.4. Evaluation Board ..................................................................................................................... 14
3 Application Interface ......................................................................................................................... 15
3.1. General Description ................................................................................................................. 15
3.2. Pin Assignment ........................................................................................................................ 16
3.3. Pin Description ......................................................................................................................... 17
3.4. Operating Modes ..................................................................................................................... 22
3.5. Power Saving ........................................................................................................................... 23
3.5.1. Sleep Mode .................................................................................................................... 23
3.5.1.1. UART Application ................................................................................................. 23
3.5.1.2. USB Application with Suspend Function ............................................................. 24
3.5.1.3. USB Application without Suspend Function ........................................................ 25
3.5.2. Minimum Functionality Mode ......................................................................................... 26
3.6. Power Supply ........................................................................................................................... 26
3.6.1. Power Supply Pins ......................................................................................................... 26
3.6.2. Decrease Voltage Drop .................................................................................................. 27
3.6.3. Reference Design for Power Supply .............................................................................. 28
3.6.4. Monitor the Power Supply .............................................................................................. 29
3.7. Turn on and off Scenarios ....................................................................................................... 29
3.7.1. Turn on Module .............................................................................................................. 29
3.7.2. Turn off Module .............................................................................................................. 31
3.7.2.1. Turn off Module Using AT Command ................................................................... 31
3.7.2.2. Emergency Shutdown .......................................................................................... 32
3.7.2.3. Automatic Shutdown ............................................................................................ 34
3.8. Reset the Module..................................................................................................................... 34
3.9. RTC Interface .......................................................................................................................... 36
3.10. UART Interface ........................................................................................................................ 37
3.11. USIM Card Interface ................................................................................................................ 39
3.12. USB Interface .......................................................................................................................... 42
3.13. PCM and I2C Interface ............................................................................................................ 44
3.14. Network Status Indication ........................................................................................................ 46
Quectel
Confidential