Alinx ZYNQ7000 FPGA User Manual page 41

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burning the FPGA. If you want to connect 5V equipment, you need to

connect level conversion chip.

A 33 ohm resistor is connected in series between the expansion port and

the FPGA connection to protect the FPGA from external voltage or current. The

P and N traces on the PCB design use differential traces to control the

differential impedance to 100 ohms. The circuit of the expansion port (J10) is

shown in Figure 7-9:

Figure 7-10 shows the physical diagram of the J10 expansion port. Pin1,

Pin2 and Pin39 of the expansion port, Pin40 has been marked on the board.

Figure 7-10: Expansion header J10 on the FPGA Board

J10 Expansion Header Pin Assignment

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ZYNQ FPGA Development Board AX7010 User Manual

Figure 7-9: Expansion header J10 schematic

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