AUSTIN, Texas – March 24, 2005 – Cirrus Logic Inc. (Nasdaq: CRUS) and Wolfson Microelectronics plc (LSE: WLF.L) today announced that they have settled all outstanding litigation between the companies.

In October 2003, Cirrus Logic brought suit against Wolfson Microelectronics plc and its subsidiary Wolfson Microelectronics, Inc. in the U.S. District Court in San Diego for patent infringement. Cirrus Logic subsequently initiated an investigation by the United States International Trade Commission (ITC), which terminated in February 2005.

Under a settlement agreement, the parties have agreed to withdraw all outstanding claims and counterclaims in the U.S. District Court proceedings. An application is being made to the ITC for the withdrawal of the exclusion order that the ITC issued in February 2005 in relation to one of the Cirrus Logic patents.

The terms of the settlement are confidential.

Cirrus Logic Inc.

Cirrus Logic is a premier supplier of high-performance analog, mixed-signal and digital processing solutions for consumer entertainment electronics, automotive entertainment and industrial product applications. Building on its global market leadership in audio ICs and its rich mixed-signal patent portfolio, Cirrus Logic targets audio, video and precision mixed-signal applications in these growing markets. The company operates from headquarters in Austin, Texas, with offices in California, Colorado, Europe, Japan and Asia.

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