The 10GBASE-R PHY FPGA Intellectual Property (IP) core allows connectivity directly with any XFP or SFP+ optical module or with any external device with XFI and SFI interfaces. The PHY IP core can be used with either FPGA IP for 10G Ethernet MAC or with a customer-developed Ethernet MAC via a standard XGMII interface running at 156.25 Mbps.