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XFP Gets the Fast Track: Page 2 of 5

  • XFP is an MSA for a 10-Gbit/s serial module. Being serial, XFP presents a more compact module, at just 30 pins. But it adds the complexity of running 10-Gbit/s signals into neighboring chips, something that can't quite be done yet.

XFP was intended for the generation following XPAK or X2. But some OEMs are beginning to consider moving directly to XFP.

Even some systems due to sample aren't locked into an MSA yet. "Some of them are already lined up. Some of them are trying to make their decision on form factor," says Bob Zona, senior product marketing manager for Intel's optical platform division. Things are even more open-ended in the storage networking area, which hasn't reached 10-Gbit/s speeds yet.

Once chips can handle 10-Gbit/s signals, XFP is expected to dominate over the other MSAs, because it's the most compact of them and eventually will be the cheapest as well. That factor is prompting some OEMs to investigate XFP a generation early, even though it currently requires an extra chip to convert the 10-Gbit/s serial feed into 3.125-Gbit/s lanes on the electrical side.

"People realize that, so you might as well start designing for it now," says Steve Joiner, Ignis director of marketing. "We have some people moving directly from 300-pin to XFP."