Microsemi Commends Power-Over-HDBaseT (POH) Standard Ratification

Emerging Connectivity Standard Optimizes Whole-home and Commercial Multimedia Distribution

ALISO VIEJO, Calif., Sept. 26, 2011 — (PRNewswire) — Microsemi Corporation (Nasdaq: MSCC), a leading provider of semiconductor solutions differentiated by power, security, reliability and performance, has commended the ratification of Power Over HDBaseT (POH) as part of HDBaseT™ specification. This represents an important milestone for the HDBaseT Alliance, the cross-industry alliance formed to promote and standardize HDBaseT technology for whole-home distribution of uncompressed high-definition (HD) multimedia content, in promoting industry-wide adoption of the technology.

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"The ratification of POH further validates HDBaseT as an emerging industry standard, and Microsemi is fully committed to the development of new Power-over-Ethernet (PoE) midspans and IC's supporting this new POH technology," said Paul Pickle, senior vice president of Microsemi's Integrated Circuit Group. "Microsemi already has our PD69108 IC in full production. This IC product is compliant with Power Over HDBaseT 1.0, which allows switch and AV receiver makers to develop PSE's that can be extremely energy-efficient while delivering up to 100 watts (W). We look forward to working with the alliance to deliver additional products that leverage this innovative technology."

Microsemi heads the HDBaseT Alliance sub-committee developing HDBaseT power specifications that will broaden the applications for core PoE technology. HDBaseT's power-delivery technology provides the foundation for new opportunities to manage overall power consumption and efficiency. These capabilities are enabled by the underlying PoE technology that has become a critical element of the latest POH specification.

In addition to the PD69108, which can be used to implement Type 3 twin PSE's that deliver up to 95 W per port, Microsemi's PoE product portfolio also includes the PD95xx midspan family, which behaves as a Type 2 twin PSE supporting POH and with IEEE802.3at-2009, delivering up to 60W per port.

As one of the first companies to demonstrate how to leverage PoE-based technology to power various electronic devices throughout the home, Microsemi actively supports HDBaseT as means to distribute video over CAT5 cable, which enables the deployment of video-related devices such as TV's and monitors. POH is backwards compatible with IEEE802.3at-2009, and can be used not only with HDBaseT as the data format, but also with Ethernet for applications that require high power, but are not necessarily video-focused such as outdoor WiFi, outdoor WiMax, laptop computers and thin clients.

HDBaseT technology's digital connectivity standard enables five key elements known as 5Play™ to share the same low-cost CAT5e/6 network cabling infrastructure: uncompressed full HD video and audio, plus 100BaseT Ethernet, control signals—and power. HDBaseT's ability to deliver up to 100 W of power to network devices is a first for transport technology. As technology adoption grows industry-wide, HDBaseT's high performance standards and compatibility are being implemented across various companies' products—a vital step to ensure high performance standards and compatibility industry-wide.

About Microsemi

Microsemi Corporation (Nasdaq: MSCC) offers a comprehensive portfolio of semiconductor solutions for: aerospace, defense and security; enterprise and communications; and industrial and alternative energy markets. Products include high-performance, high-reliability analog and RF devices, mixed-signal and RF integrated circuits, customizable SoCs, FPGAs, and complete subsystems. Microsemi is headquartered in Aliso Viejo, Calif., and has more than 2,700 employees globally. Learn more at www.microsemi.com.

Microsemi and the Microsemi logo are registered trademarks or service marks of Microsemi Corporation and/or its affiliates. Third-party trademarks and service marks mentioned herein are the property of their respective owners.

"Safe Harbor" Statement under the Private Securities Litigation Reform Act of 1995: Any statements set forth in this news release that are not entirely historical and factual in nature, including without limitation statements related to commending the ratification of Power-Over-HDBaseT as part of HDBaseT technology, as well as the development of products using Power-over-Ethernet technology, and their potential effects on future business, are forward-looking statements. These forward-looking statements are based on our current expectations and are inherently subject to risks and uncertainties that could cause actual results to differ materially from those expressed in the forward-looking statements. The potential risks and uncertainties include, but are not limited to, such factors as rapidly changing technology and product obsolescence, potential cost increases, variations in customer order preferences, weakness or competitive pricing environment of the marketplace, uncertain demand for and acceptance of the company's products, adverse circumstances in any of our end markets, results of in-process or planned development or marketing and promotional campaigns, difficulties foreseeing future demand, potential non-realization of expected orders or non-realization of backlog, product returns, product liability, and other potential unexpected business and economic conditions or adverse changes in current or expected industry conditions, difficulties and costs of protecting patents and other proprietary rights, inventory obsolescence and difficulties regarding customer qualification of products. In addition to these factors and any other factors mentioned elsewhere in this news release, the reader should refer as well to the factors, uncertainties or risks identified in the company's most recent Form 10-K and all subsequent Form 10-Q reports filed by Microsemi with the SEC. Additional risk factors may be identified from time to time in Microsemi's future filings. The forward-looking statements included in this release speak only as of the date hereof, and Microsemi does not undertake any obligation to update these forward-looking statements to reflect subsequent events or circumstances.

SOURCE Microsemi Corporation

Microsemi Corporation
Gwen Carlson, Director of Marcom/Product PR
Phone: +1-949-380-6100 ext. 1835
Beth P. Quezada, PR Specialist
Phone: +1-949-380-6100 ext. 1802
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Web: http://www.microsemi.com

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