Quectel EG95-E, Hardware Manual

Page: 5 / 87

LTE Module Series
EG95 Hardware Design
EG95_Hardware_Design 4 / 81
Contents
About the Document ................................................................................................................................... 2
Contents ....................................................................................................................................................... 4
Table Index ................................................................................................................................................... 6
Figure Index ................................................................................................................................................. 7
1 Introduction .......................................................................................................................................... 9
1.1.
Safety Information.................................................................................................................... 10
2 Product Concept ................................................................................................................................ 11
2.1.
General Description ................................................................................................................. 11
2.2.
Key Features ........................................................................................................................... 12
2.3.
Functional Diagram ................................................................................................................. 14
2.4.
Evaluation Board ..................................................................................................................... 15
3 Application Interfaces ....................................................................................................................... 16
3.1.
General Description ................................................................................................................. 16
3.2.
Pin Assignment ........................................................................................................................ 17
3.3.
Pin Description ......................................................................................................................... 18
3.4.
Operating Modes ..................................................................................................................... 24
3.5.
Power Saving ........................................................................................................................... 24
3.5.1. Sleep Mode .................................................................................................................... 24
3.5.1.1. UART Application ................................................................................................. 25
3.5.1.2. USB Application with USB Remote Wakeup Function ........................................ 25
3.5.1.3. USB Application with USB Suspend/Resume and RI Function .......................... 26
3.5.1.4. USB Application without USB Suspend Function ................................................ 27
3.5.2. Airplane Mode ................................................................................................................ 27
3.6.
Power Supply ........................................................................................................................... 28
3.6.1. Power Supply Pins ......................................................................................................... 28
3.6.2. Decrease Voltage Drop .................................................................................................. 29
3.6.3. Reference Design for Power Supply .............................................................................. 30
3.6.4. Monitor the Power Supply .............................................................................................. 30
3.7.
Turn on and off Scenarios ....................................................................................................... 30
3.7.1. Turn on Module Using the PWRKEY ............................................................................. 30
3.7.2.
Turn off Module .............................................................................................................. 32
3.7.2.1. Turn off Module Using the PWRKEY Pin ............................................................. 32
3.7.2.2. Turn off Module Using AT Command ................................................................... 33
3.8.
Reset the Module..................................................................................................................... 33
3.9.
(U)SIM Interfaces..................................................................................................................... 35
3.10.
USB Interface .......................................................................................................................... 38
3.11.
UART Interfaces ...................................................................................................................... 40
3.12.
PCM and I2C Interfaces .......................................................................................................... 42
3.13.
SPI Interface ............................................................................................................................ 45
3.14.
Network Status Indication ........................................................................................................ 45