WIZnet Developer Forum

W7500x and 3-Port Switch IC


I’m interested in using the W7500x chips, but would like to make a module which can be connected inline (daisy-chained), which could be implemented by replacing the W7500 external PHY with a compatible three port Ethernet switch.

I’m not sure if there’s a simple 3-port switch IC with three PHY connections allowing the W7500P to be connected via the four Ethernet signals, as this might be simpler to route on a PCB, and allow a smaller switch IC.

Has this been done before on these products?




We have a product which W7500 and a Switch IC are embedded on.
It’s not released to the public but provided to some specific customers.
If you want, we can provide you with it.

Best regards,


Hi James,

That sounds VERY interesting, my main issue would be my potential volumes are quite low due to it being a device for an industrial machine we build (<1000 units), although the end product would have a potentially much wider application in general industry. If this quantity is not an issue I’d be very interested in more information.

What would be ideal for my volumes would be a version of the WIZwiki-7500ECO where the CPU/PHY are replaced with this new chip and the two Ethernet port connections come out as pins to allow me to fit D-Coded M12 sockets and magnetics.

In my application I would be building a similar base board, but would probably not include the on-board USB programming interface, and simply connect to a SWD programming header as needed, while implementing a 24V to 3.3V power supply for the base and extension boards.


Hi James,

We are in the process of developing a small Ethernet Node that requires to have the W7500 along with a suitable (small) 3-port Ethernet Switch. We were considering the KSZ8863RLL for the 3-port switch. Please let me know if you have any available reference data/schematic for this. Alternately, please suggest a suitable 3-Port Ethernet switch that I can use with the W7500 in our design.

Our requirement is to daisy chain multiple ethernet nodes (each with a W7500 + 3-port switch) to save on cabling costs. Each Node will have 2x RJ45 Jacks for Ethernet In/Out.

Best Regards,


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