Optical components

Vitesse's PHY Chip Plans Leak Out

Vitesse Semiconductor Corp. (Nasdaq: VTSS) appears to be hiding its light under a bushel when it comes to 10-Gbit/s Ethernet PHY chipsets, judging by its announcement yesterday (see Vitesse Releases 10G Chipset).

Vitesse's press release gives details of three chips for 300-pin MSA transceivers, the principal use of which is in Sonet/SDH equipment. No mention is made of two much more interesting chips, details of which have been included in Light Reading's survey of 10-Gbit/s Ethernet PHY chips, published this week (see PHY Chips).

Vitesse provided details of the chips - the VSC8476 and VSC8478 - for the report, anticipating that it would announce them in mid-March. However, the launch has been delayed and now the chips probably won't be announced until some time in May, according to Ronda Grech, a Vitesse spokesperson. "We are working to finalize a second source agreement," she writes in an email, responding to a question about the reason for the delay.

"The 8478 includes an XGMII interface and is a far better approach to replacing the 300-pin transponder with a XFP transceiver in an existing design," says Simon Stanley, principal consultant of Earlswood Marketing Ltd. and author of the Light Reading report.

— Peter Heywood, Founding Editor, Light Reading

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