TranSwitch and Fulcrum Collaborate on 10GBASE-CX4 Solutions; Reference Design Combines CX4 Retimer with Low-Latency Switch for Data Center Applications

SHELTON, Conn.—(BUSINESS WIRE)—Sept. 18, 2006— TranSwitch Corp. (NASDAQ: TXCC) today announced that they have collaborated with Fulcrum Microsystems on a reference design to simplify the development of 10-Gigabit Ethernet switch systems that feature extended-reach physical connectivity over copper interfaces using the widely-adopted CX4 interface standard.

The solution, which utilizes TranSwitch's MY3128 PHY device and Fulcrum's FocalPoint FM2224, extends the reach of standard 24-gauge CX4 cable to 30 meters and supports the new 30-gauge standard up to 15 meters. Additionally, it supports the ad hoc powered CX4 specification, which enables the copper cables to be replaced by low-cost optical connections. The combined solution ensures the performance required in the data center, offering less than 400 nanoseconds (ns) port-to-port latency. The reference design is available from Fulcrum or TranSwitch.

"TranSwitch's PHY device has the best drive characteristics for moving data over CX4 cable, along with the lowest power at the lowest cost in the industry," said Hoshang Mulla, vice president of marketing for TranSwitch. "With our reference design, we have proven this high level of performance for easy implementation by customers."

"As the industry continues to adopt 10-Gigabit Ethernet networks, we are making it easy for switch designers to build media flexibility into their systems," said Mike Zeile, vice president of marketing at Fulcrum Microsystems. "Our ability to use our FM2224 switch in conjunction with the CX4 retimer from TranSwitch enables us to dramatically simplify product development and improve the time to market."

The MY3128 is a fully integrated XAUI to CX4 retimer and continues TranSwitch's award winning "Module-in-a-Chip" concept. Incorporating the industry's highest levels of integration, the chip also employs a channel swap capability, which allows the user to maintain all high-speed signals on a single PC layer, regardless of connector configurations. This reduces the entire PCB requirement to just four layers, further lowering overall system cost.

The FocalPoint FM2224 is a breakthrough 10-Gigabit Ethernet switch chip with 200ns of total latency. This performance makes Ethernet the new cost-effective and high-performance choice for storage, computing and networking backplane and interconnect applications. The FM2224 features 24 integrated 10-Gigabit Ethernet interfaces, each of which can be configured to operate in 10Gbps, 2.5 Gbps and 10/100/1000 modes.

About Fulcrum Microsystems

Fulcrum Microsystems delivers performance-leading Ethernet switch chips for next-generation board and system designs. The company's devices change the paradigm for interconnect, offering low latency, fine-grained flow control, and high throughput which combine to simplify board design and to build in more flexibility and higher performance. More information can be found at

About TranSwitch

Founded in 1988, TranSwitch Corporation is a publicly held company that provides communications OEMs with the semiconductors, software, systems expertise and support for the converging network for voice, data, and video. TranSwitch designs and develops the most intelligent, innovative silicon and software solutions, and provides the customer support needed for the fastest time-to-market. TranSwitch, Shelton, CT, is an ISO 9001:2000 registered company. For more information, visit

Forward-looking statements in this release, including statements regarding management's expectations for future financial results and the markets for TranSwitch's products, are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Investors are cautioned that these forward-looking statements regarding TranSwitch, its operations and its financial results involve risks and uncertainties, including without limitation risks associated with acquiring new businesses; of downturns in economic conditions generally and in the telecommunications and data communications markets and the semiconductor industry specifically; risks in product development and market acceptance of and demand for TranSwitch's products and products developed by TranSwitch's customers; risks relating to TranSwitch's indebtedness; risks of failing to attract and retain key managerial and technical personnel; risks associated with foreign sales and high customer concentration; risks associated with competition and competitive pricing pressures; risks associated with investing in new businesses; risks of dependence on third-party VLSI fabrication facilities; risks related to intellectual property rights and litigation; risks in technology development and commercialization; and other risks detailed in TranSwitch's filings with the Securities and Exchange Commission.

TranSwitch is a registered trademark of TranSwitch Corporation.

TranSwitch Corp.              
Joyce Clark, 203-929-8810 x2609            

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Fulcrum Microsystems
Mike Zeile, 818-871-8164                     

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The David James Agency             
David Rodewald, 805-494-9508                       

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