Gigabit Ethernet:Цитата
Altera devices do not directly interface to 10Base-T (10 Mbits over unshielded twisted pair copper cable), 100Base-T (100 Mbit over copper), and 1000Base-T (1 Gbit over copper) networks. Therefore, Altera devices need an external 10/100/1000Base-T standard PHY device for connection to the Ethernet copper cable.