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[FAQ] DP83867E: How to force 10/100/1000 Mbps speed in Ethernet PHYs?

Part Number: DP83867E
Other Parts Discussed in Thread: USB-2-MDIO

To force a specific speed, auto-negotiation is left enabled while disabling advertisements for all non-desired speeds.

The scripts to do this in the USB-2-MDIO interface for the DP83867 are included below. If using a different interface, reference the same sequence of register writes shown in each script.

Speed (Mbps) Script to Force