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SMSC, TransDimension achieve USB-IF OTG certification

Posted: 29 Dec 2004 ?? ?Print Version ?Bookmark and Share

Keywords:transdimension? usb? transceiver? usb-if on-the-go?

Standard Microsystems Corp. (SMSC) and TransDimension, a provider of USB connectivity solutions have completed the USB-IF On-The-Go (OTG) compliance testing for a hi-speed USB solution utilizing a stand-alone transceiver.

TransDimension's hi-speed USB controller IP with a UTMI+ Low Pin Interface (ULPI) interface block and SMSC's USB3300 ULPI stand-alone physical layer transceiver (PHY), are claimed to be the first hi-speed USB products to pass OTG compliance testing, which is governed by the USB Implementers Forum (USB-IF).

ULPI modifies the UTMI+ link/PHY interface to reduce the pin count necessary for discrete USB transceiver implementations to support host, device or OTG functionality. The low pin count interface allows transceivers to be kept separate from the associated digital ASICs as the technology nodes become smaller and integrating the PHY becomes more complex and expensive.

The ability to remove the 5V tolerant transceiver from the SoC will allow system developers to speed time-to-market and mitigate risk as they move into smaller and smaller process geometries," said Pete Todd, VP of marketing at TransDimension. "Until the development of ULPI, the only external transceiver option open to the SoC community involved a UTMI+ interface which could entail anywhere between 22 and 55 pins. This collaboration with SMSC has now proven that the same functionality and performance can be achieved with the 8 and 12 pin variations of a ULPI interface," Todd added.

Steve Nelson, VP of marketing - connectivity solutions at SMSC, commented, "Driven by the explosion of digital photography, the highly competitive portable consumer electronics market is now mandating that products such as MP3 players, PDAs, digital cameras and cell phones provide Hi-Speed USB host control of external peripheral devices without a PC."





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