Biser,
It sounds like I would need a Gigabit PHY between TMS320C6655/57 and AM335x as well as between second AM335x Port and the outside world since neither appear to have integrated PHY. I noticed that TMS320C6657 EVM uses a Marvell 88E1112 Gigabit Transceiver and the AM335x EvM uses a Qualcomm AR8031. Any thoughts on which PHY to use since TI does not appear to have a Gigabit Ethernet Transceiver. Also, any other considerations that you can think of in using an Ethernet connnection between these 2 devices residing on same PCB.