[0xdeadbeefbabe]

Well with this system on memory footprint, if my application doesn't need Ethernet I won't add one to the board, and if I don't add one to the board then the jack and chip won't be wasted or e-wasted.

[ris]

You're making project-specific one-off PCBs, and you think this is less wasteful/more efficient than "wasting" an ethernet transceiver?