Cirrus Logic Charges Into Low-Power Digital Audio Applications With Highly Integrated Mixed-Signal Codec IC; CS42L51 Delivers Superior Audio Output Performance at Low-Power 1.8 V Power Supply

AUSTIN, Texas—(BUSINESS WIRE)—July 18, 2005— Targeting new growth segments for analog integrated circuits (ICs), Cirrus Logic Inc. (Nasdaq:CRUS) has introduced a new highly integrated, low-power stereo codec for portable audio applications. The CS42L51 is the first in a new line of products focused on analog and mixed signal ICs for power-sensitive, battery-operated applications such as HDD and flash-based music players, personal media players, mini-disc players/recorders, PDAs, smart phones, digital camcorders and digital voice recorders.

The CS42L51 delivers excellent analog audio performance while providing system designers with a solution that improves battery life, reduces end product form factors and simplifies the recording and playback of digital audio. The CS42L51's key distinction against competitive IC products is that it can operate from a single 1.8V power supply for low power consumption, yet deliver plenty of power -- 46mW -- into stereo 16 ohm headphones for a great listening experience for consumers.

By generating its own on-chip negative power supply voltage, the CS42L51 provides ground-centered outputs, which eliminate costly, space-consuming DC-blocking capacitors. The elimination of these capacitors not only reduces the implementation cost but it also greatly simplifies product design and saves valuable space on circuit boards.

"We are excited about the value this new codec will provide to our customers due to its small form factor and elimination of expensive passive components, all while operating from a single 1.8V supply and delivering the premium audio quality our customers have come to expect," said Jason Rhode, vice president and general manager, Mixed-Signal Audio Products Division, Cirrus Logic. "The CS42L51 will finally enable designers to stop sacrificing audio quality in their portable products due to size and power constraints."

In addition to a high-quality multi-bit Delta Sigma based ADC and DAC, the CS42L51 integrates a 3:1 stereo input multiplexer, programmable gain amplifier, a stereo microphone preamplifier and low-noise bias supply, automatic level control, and a digital signal processing engine, which offers features such as bass/treble boost, limiter and a tone generator. Its analog stereo outputs can be configured as HP or line out, with digital volume and mute output control.

Pricing and Availability

The CS42L51 is currently sampling to customers, with volume production expected in late summer 2005. The codec is available in a 32-lead QFN package and is priced at $3.95 in quantities of 1,000.

Cirrus Logic Inc.

Cirrus Logic develops high-precision analog and mixed-signal integrated circuits for a broad range of consumer and industrial markets. Building on its diverse analog mixed-signal patent portfolio, Cirrus Logic delivers highly optimized products for consumer and commercial audio, automotive entertainment and industrial applications. The company operates from headquarters in Austin, Texas, with offices in Colorado, Europe, Japan and Asia. More information about Cirrus Logic is available at www.cirrus.com.

Safe Harbor Statement

Except for historical information contained herein, the matters set forth in this news release, including statements regarding anticipated volume production in late summer 2005, are forward-looking statements. These forward-looking statements are based on our current expectations, estimates and assumptions and are subject to certain risks and uncertainties that could cause actual results to differ materially from our current expectations, estimates and assumptions and the forward-looking statements made in this press release. These risks and uncertainties include, but are not limited to, the following: overall conditions in the semiconductor market; our ability to introduce new products on a timely basis and to deliver products that perform as anticipated; hardware or software deficiencies; our dependence on subcontractors for assembly, manufacturing, packaging and testing functions and the risk factors listed in our Form 10-K for the year ended March 26, 2005, and in other filings with the Securities and Exchange Commission.

Cirrus Logic and Cirrus are trademarks of Cirrus Logic Inc. All other product names noted herein may be trademarks of their respective holders.

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