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Are the 78 ohm resistors required for the LXT901 on the AUI port when implementing an on board (without the AUI cable) interface with another device?

April 26, 2017aui cable implementing ohm port resistors

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Are the 78 ohm resistors required for the LXT901 on the AUI port when implementing an on board (without the AUI cable) interface with another device?

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Yes, the 78 ohm resistor sets up the voltage bias points for the interface, and should always be implemented. It is also recommended that 2kV caps are used when implementing capacitive coupling in order to stay compliant with the IEEE 802.3 voltage spike tolerance.