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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