Quectel EC20 User Manual

LTE Module Series
EC20 Mini PCIe Hardware Design
EC20_Mini_PCIe_Hardware_Design Confidential / Released 3 / 36
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. Description of Product Series .................................................................................................... 9
2.3. Key Features ........................................................................................................................... 10
2.4. Functional Diagram ................................................................................................................. 12
3 Application Interface ......................................................................................................................... 13
3.1. General Description ................................................................................................................. 13
3.2. EC20 Mini PCIe Interface ........................................................................................................ 13
3.2.1. Definition of Interface ..................................................................................................... 13
3.2.2. Pin Assignment .............................................................................................................. 16
3.3. Power Supply ........................................................................................................................... 17
3.4. USIM Card Interface ................................................................................................................ 18
3.5. USB Interface .......................................................................................................................... 19
3.6. UART Interface ........................................................................................................................ 20
3.7. PCM and I2C Interface ............................................................................................................ 22
3.8. Control Signals ........................................................................................................................ 24
3.8.1. RI Signal ......................................................................................................................... 25
3.8.2. DTR Signal ..................................................................................................................... 25
3.8.3. W_DISABLE# Signal ...................................................................................................... 25
3.8.4. PERST# Signal .............................................................................................................. 26
3.8.5. LED_WWAN# Signal ..................................................................................................... 26
3.9. Antenna Interface .................................................................................................................... 27
4 Electrical and Radio Characteristics ............................................................................................... 28
4.1. General Description ................................................................................................................. 28
4.2. Power Supply Requirements ................................................................................................... 28
4.3. IO Requirements ...................................................................................................................... 29
4.4. RF Characteristics ................................................................................................................... 29
4.5. GNSS Receiver ....................................................................................................................... 30
4.6. ESD Characteristics ................................................................................................................ 31
5 Mechanical Dimensions .................................................................................................................... 32
5.1. General Description ................................................................................................................. 32
5.2. Mechanical Dimensions of EC20 Mini PCIe ............................................................................ 32
5.3. Standard Dimensions of Mini PCI Express ............................................................................. 33
Quectel
Confidential

Quectel EC20 Specifications

General

Brand	Quectel
Model	EC20
Category	PCI Card
Language	English