Alinx Cyclone IV FPGA User Manual page 30

At the same time, two LED indicators LED7 (RXD) and LED8 (TXD) 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 12-3
Figure 12-4: USB to Serial Port LED Indicator on FPGA Board
Serial Port Pin Assignment
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Cyclone IV FPGA Development Board AX515 User Manual
Figure 12-3: USB to Serial Port LED Indicator
Pin Name
UART_RXD
UART_TXD
Contact Email: rachel.zhou@alinx.com.cn
FPGA Pin
G7
F9