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DP83867IR: Ethernet Splitter

Part Number: DP83867IR

Tool/software:

Hello Team,
We are planning to use the Phy transceiver DP83867ISRGZR for one of our products.
The product follows a backplane architecture.
We have 4 daughter cards each has its own MCU and its own IP address.
The IP address of the MCU hard coded by the firmware.



We need only one MCU active at a time.
A GUI will be running in the PC and the PC will decide whether we need to switch to second MCU or not.

So can we mux/split the MDI signals (signals after PHY) like shown in the image?
An Ethernet  hub or switch will do the job but will increase the product cost.
We have seen certain products called Ethernet splitter available in the marker which will split the MDI signals
Link



The Jack 5 will come from the PC and Jack 1 to 4 will be  connected to each MCUs through the backplane.


Can you please review this and please let us know if we go with this design?.

Looking for your reply.

  • Hi Sv,

    Thank you for submitting your question. I understand the desire to use this Ethernet splitter style connection, but this will not function well at 1000Mbps. We have not validated our PHY for this type of application. As you mentioned, a switch would be the better, more reliable, solution.

    Regards,

    Alvaro