Wi-Fi&Bluetooth Module Series
Wi-Fi-M.2_EVB_User_Guide 15 / 22
Figure 5: The Connection Between J301 and PC
3.4. UART Interface (J401)
Wi-Fi-M.2 EVB offers one UART interface J401 (debug UART) for Linux console and log output.
The block diagram of UART on Wi-Fi-M.2 EVB is shown as below.
Wi-Fi
module
3.3/1.8 V
Voltage-level
Translator
3.3 V
1.8 V
Wi-Fi-M.2
USB to UART
Converter
U402
USB 2.0
USB Micro-B
J401
Figure 6: UART Block Diagram
