UMTS/HSPA+/LTE Standard Module Series
Mini PCIe-C EVB User Guide
Mini_PCIe-C_EVB_User_Guide 27 / 39
4.5. UART Interface (J301)
The UART interface of the Mini PCIe-C EVB is intended for the communication between the module and
the host application. It can be used for data transmission and AT command communication.
The following figure shows the block diagram of the UART interface on Mini PCIe-C EVB.
RS232
Level Match
Level
Translator
COM
DB9
J301
RS232
3.0V
1.8V
J101
U
A
R
T
in
te
rfa
ce
Figure 23: Block Diagram of UART Interface
C5
GND
/
Ground
C6
VPP
/
Not connected
C7
SIM_DATA
I/O
Data line.
Bidirectional
CD1
/
Not connected
CD2
/
Not connected
