The 20G serial Chip to Chip communication module is a small, easy to implement design allowing high-speed data transfer over 3 lanes running at 6.375Gbps on Altera FPGAs. It is based on multiple Macnica 10Gbe "MACLite" Ethernet MACs and is therefore Ethernet compatible. This allows the use of external commercial switches should a more complex "crossbar" type architecture need to be implemented. The design is very resource effective using only 17k LEs and is suitable for chip to chip communications on a single PCB or over a backplane.

http://www.macnica-na.com/web/americas/20g-chip-to-chip-communication

Macnica Americas offers IP, design services and distribution for Altera, Aptina, Broadcom and other semiconductor manufacturers across North America.