On my board, I'd like to replace an RJ45 port with an SFP+ transceiver to increase data rate to 10Gbps. In choosing an SFP+ module, I have noticed that the only MSA compliant interfaces can be limiting, linear, or both, while I see re-timed interface(existing in XFP and some non-compliant SFP+ modules) is recommended for communicating with some FPGAs. I'm looking at finisar(FTLX8571D3BCV) and xilinx kintex-7 to communicate with. Does the lack of CDR module cause problems?
I'm a newbie in these fields, so please let me know if more info in needed to clarify.