Quectel EG25-GL, Hardware Design, Page: 6 / 105

LTE Standard Module Series
EG25-GL_Hardware_Design 5 / 96
Contents
Safety Information ....................................................................................................................................... 3
About the Document ................................................................................................................................... 4
Contents ....................................................................................................................................................... 5
Table Index ................................................................................................................................................... 8
Figure Index ............................................................................................................................................... 10
1 Introduction ........................................................................................................................................ 12
1.1 Special Marks .......................................................................................................................... 12
2 Product Overview .............................................................................................................................. 13
2.1 Frequency Bands and Functions ............................................................................................. 13
2.2 Key Features ........................................................................................................................... 14
2.3 Functional Diagram ................................................................................................................. 17
2.4 Pin Assignment ........................................................................................................................ 18
2.5 Pin Description ......................................................................................................................... 19
2.6 EVB Kit..................................................................................................................................... 27
3 Operating Characteristics ................................................................................................................. 28
3.1 Operating Modes ..................................................................................................................... 28
3.2 Sleep Mode .............................................................................................................................. 29
3.2.1 UART Application Scenario ............................................................................................ 29
3.2.2 USB Application Scenario .............................................................................................. 29
3.2.2.1 USB Application with USB Remote Wakeup Function ........................................ 29
3.2.2.2 USB Application with USB Suspend/Resume and MAIN_RI Function ............... 30
3.2.2.3 USB Application without USB Suspend Function ................................................ 31
3.2.3 Airplane Mode ................................................................................................................ 31
3.3 Power Supply ........................................................................................................................... 32
3.3.1 Power Supply Pins ......................................................................................................... 32
3.3.2 Voltage Stability Requirements ...................................................................................... 33
3.3.3 Reference Design for Power Supply .............................................................................. 34
3.3.4 Power Supply Voltage Monitoring .................................................................................. 35
3.4 Turn On .................................................................................................................................... 35
3.4.1 Turn On with PWRKEY .................................................................................................. 35
3.5 Turn Off .................................................................................................................................... 37
3.5.1 Turn Off with PWRKEY .................................................................................................. 37
3.5.2 Turn Off with AT Command ............................................................................................ 37
3.6 Reset ........................................................................................................................................ 38
4 Application Interfaces ....................................................................................................................... 40
4.1 (U)SIM Interface ...................................................................................................................... 40
4.2 USB Interface .......................................................................................................................... 42
4.3 UART Interfaces ...................................................................................................................... 43
4.4 PCM and I2C Interfaces .......................................................................................................... 46