Alinx ZYNQ7000 FPGA User Manual page 43

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PIN36

PIN37

PIN38

PIN39

PIN40

Part 7.5: Expansion Port J11

The expansion port J10 is a 40-pin 2.54mm double-row connector, which

expands more peripherals and interfaces for users. Currently, the modules

provided by ALINX include: ADDA module, LCD module, Gigabit Ethernet

module, audio input/output module, matrix keyboard module, 500W binocular

vision camera module, etc. The expansion port has 40 signals, of which

1-channel 5V power supply, 2-channel 3.3 V power supply, 3-channle ground

and 34 IOs. The 34 IOs are connected to the BANK35 ZYNQ PL. The default

level is 3.3V. All the 34IOs of the expansion port J11 can change the level by

replacing the power chip (SPX3819M5-3-3) on the development board.

Do not directly connect the IO directly to the 5V device to avoid

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 (J11) is

shown in Figure 7-11:

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ZYNQ FPGA Development Board AX7010 User Manual

EX_IO1_17P

GND

+3.3V

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