SerDes Framer Interface explained

SerDes Framer Interface is a standard for telecommunications abbreviated as SFI. Variants include:

• SFI-4 or SerDes Framer Interface Level 4, a standardized Electrical Interface by the Optical Internetworking Forum (OIF) for connecting a synchronous optical networking (SONET) framer component to an optical serializer/deserializer (SerDes) for Optical Carrier transmission rate OC-192 interfaces at about 10 Gigabits per second.^[1]
• SFI-5 or SerDes Framer Interface Level 5, a standardized Electrical Interface by the OIF for connecting a SONET Framer component to an optical SerDes for OC-768, about 40 Gbit/s.^[1] Electrically, it consists of 16 pairs of SerDes channels each running at 3.125 Gbit/s which gives an aggregate bandwidth of 50 Gbit/s accommodating up to 25% of Forward Error Correction

See also

• XFP transceiver
• System Packet Interface
• Common Electrical I/O

External links

• OIF
• OFI SFI-5 Implementation Agreement
• OFI SFI-4 Implementation Agreement

Notes and References

1. Book: Panos C. Lekkas . Network Processors:Architecture, Protocols, and Platforms . McGraw-Hill Professional . 2003 . 423 . 0-07-140986-6 .