LTE Standard Module Series
EC20 R2.1 Mini PCIe Hardware Design
EC20_R2.1_Mini_PCIe_Hardware_Design 13 / 51
2.3. Functional Diagram
The following figure shows the block diagram of EC20 R2.1 Mini PCIe.
EC20 R2.1
Module
PCM&I2C
M
in
i P
C
I E
x
p
re
s
s
In
te
rf
a
c
e
USB
W_DISABLE#
PERST#
LED_WWAN#
Main
Antenna
Connector
VCC
Main
Antenna
VBAT
GNSS
Antenna
Connector
GNSS
Antenna
Boost
Circuit
Diversity
Antenna
Connector
Diversity
Antenna
WAKE#
UART
DTR
RI
(U)SIM
Figure 1: Functional Diagram