Alinx ARTIX-7FPGA User Manual page 46

ARTIX-7 FPGA Development Board AX7203 User Manual
Figure 3-7-1: USB to serial port schematic
Figure 3-7-2: USB to serial port on the Carrier board
Two LED indicators (LED3 and LED4) are set for the serial port signal, and
the silkscreen on the PCB is TX and RX, indicating that the serial port has data
transmission or reception, as shown in the following Figure 3-3-3
Figure 3-7-3: Serial Port communication LED Indicators Schematic
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