Product Info

LTE Module Series
EG21-G MINIPCIE Hardware Design
EG21-G_MINIPCIE_Hardware_Design 13 / 48
2.4. Functional Diagram
The following figure shows the block diagram of EG21-G MINIPCIE.
EG25 Module
PCM&I2C
Mini PCI Express Interface
USB
W_DISABLE#
PERST#
LED_WWAN#
Main
Antenna
Interface
VCC
Main
Antenna
VBAT
GNSS
Antenna
Interface
GNSS
Antenna
Boost
Circuit
Diversity
Antenna
Interface
Diversity
Antenna
WAKE#
UART
DTR
RI
(U)SIM
(U)SIM Card
Connector
Figure 1: Functional Diagram
EG21-G MINIPCIE support a built in (U)SIM card connector which share the same (U)SIM interface with
the one that connected to Mini PCI Express Interface. The built in (U)SIM card connector support no card
detection function, and cannot be simultaneously used with external USIM card. When unused, the built in
(U)SIM card connector has no any effect to the external USIM card.
NOTES