Quectel LTE Standard Module Series - Table of Contents; Contents

LTE Standard Module Series
EG21-G Mini PCIe Hardware Design
EG21-G_Mini_PCIe_Hardware_Design 3 / 54
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. Module Description .................................................................................................................... 9
2.3. Key Features ........................................................................................................................... 10
2.4. Functional Diagram ................................................................................................................. 13
3 Application Interfaces ....................................................................................................................... 14
3.1. Pin Assignment ........................................................................................................................ 14
3.2. Pin Description ......................................................................................................................... 15
3.1. Operating Modes ..................................................................................................................... 18
3.2. Power Saving ........................................................................................................................... 19
3.2.1. Sleep Mode .................................................................................................................... 19
3.2.2. Airplane Mode ................................................................................................................ 19
3.3. Power Supply ........................................................................................................................... 19
3.4. (U)SIM Interface ...................................................................................................................... 20
3.5. USB Interface .......................................................................................................................... 22
3.6. UART Interface ........................................................................................................................ 23
3.7. PCM and I2C Interfaces .......................................................................................................... 24
3.8. Control and Indication Signals ................................................................................................. 27
3.8.1. RI Signal ......................................................................................................................... 27
3.8.2. DTR Signal ..................................................................................................................... 27
3.8.3. W_DISABLE# Signal ...................................................................................................... 28
3.8.4. PERST# Signal .............................................................................................................. 28
3.8.5. LED_WWAN# Signal ..................................................................................................... 29
3.8.6. WAKE# Signal ................................................................................................................ 30
4 GNSS Receiver ................................................................................................................................... 31
4.1. General Description ................................................................................................................. 31
4.2. GNSS Performance ................................................................................................................. 31
4.3. GNSS Frequency..................................................................................................................... 32
5 Antenna Connection .......................................................................................................................... 33
5.1. Antenna Connectors ................................................................................................................ 33
5.1.1. Operating Frequency ..................................................................................................... 33
5.2. Antenna Requirements ............................................................................................................ 35
5.3. Recommended Mating Plugs for Antenna Connection ........................................................... 36