Uart Interfaces (J201/J202) - Quectel FC41D-TE-B User Manual

3.3. UART Interfaces (J201/J202)

The FC41D-TE-B offers two UART interfaces: J201 (main UART) and J202 (debug UART).
J201 is intended for communication between the module and the host application. It can be used for
download and AT command communication.
J202 supports 115200 bps baud rate by default. It can be used for Linux console and log output.
The following figure shows the block diagram of UART on FC41D-TE-B.
FC41D
Debug UART
FC41D-TE-B_User_Guide
3.3 V IO
Main UART
3.3 V IO
Figure 6: UART Block Diagram
Figure 7: USB Connectors
U201
USB 2.0
USB TO UART
Converter
U202
USB 2.0
USB TO UART
Converter
Wi-Fi&Bluetooth Module Series
FC41D-TE-B User Guide
J201
USB Micro-B
J202
USB Micro-B
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