Microchip’s LAN9252 is a 2/3-port EtherCAT slave controller with dual integrated Ethernet PHYs which each contain a full-duplex 100BASE-TX transceiver and support 100Mbps (100BASE-TX) operation. DigiKey 100 - $8.36. Весьма любопытная штучка. http://www.microchip.com/wwwproducts/en/LAN9252