Quectel LTE Standard Module Series, Проектирование аппаратного обеспечения

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LTE Standard Module Series
EG21-G Mini PCIe Hardware Design
EG21-G_Mini_PCIe_Hardware_Design 15 / 54
3.2. Pin Description
The following tables show the pin definition and description of the 52 pins on EG21-G Mini PCIe.
Table 3: I/O Parameters Definition
Table 4: Pin Description
Type Description
DI Digital Input
DO Digital Output
IO Bidirectional
OC Open Collector
PI Power Input
PO Power Output
Pin No.
Mini PCI Express
Standard Name
EG21-G Mini PCIe
Pin Name
I/O Description Comment
1 WAKE# WAKE# OC
Output signal used to
wake up the host.
2 3.3Vaux VCC_3V3 PI
3.0V~3.6V, typically
3.3V DC supply
3 COEX1 RESERVED DI Reserved
It is prohibited to
be pulled up
high before
startup.
4 GND GND Mini card ground
5 COEX2 RESERVED DO Reserved
It is prohibited to
be pulled up
high before
startup.
6 1.5V NC Not connected
7 CLKREQ# RESERVED Reserved
8 UIM_PWR USIM_VDD PO Power supply for the