SFP+:
Xilinx supports all retimed (or "SONET Grade") SFP+ modules.Xilinx testing has shown performance better than 10e-12 BER, the SFP+ specification, with non-retimed Limiting SFP+ SR and LR modules.For improved performance or additional margin, consider using retimers.
Xilinx strongly recommends use of retimers in the receive path for Linear SFP+ modules in LRM applications.Due to limited testing, Linear SR, Linear LR, Linear/Limiting ER and Linear/Limiting ZR applications should strongly consider using retimers in the receive path.
QSFP:
Xilinx supports all retimed QSFP modules. Due to limited testing, Xilinx recommends retimers in the receive path in SR, MR, LR, and LRM applications.
| Answer Number | Answer Title | Version Found | Version Resolved |
|---|---|---|---|
| 34565 | Design Advisory Master Answer Record for Virtex-6 FPGA | N/A | N/A |