Description Of Business	12 Months Ended
Mar. 31, 2012
Description Of Business [Abstract]
Description Of Business	1. Description of Business Description of Business Cirrus Logic, Inc. (“Cirrus Logic,” “Cirrus,” “We,” “Us,” “Our,” or the “Company”) develops high-precision, analog and mixed-signal integrated circuits (“ICs”) for a broad range of consumer and industrial markets. Building on our diverse analog and mixed-signal patent portfolio, Cirrus Logic delivers highly optimized products for consumer and commercial audio, automotive entertainment, and targeted industrial applications including energy control, energy measurement and energy exploration. We also develop ICs, board-level modules and hybrids for high-power amplifier applications branded as the Apex Precision Power™ (“Apex”) line of products. We also provide complete system reference designs based on our technology that enable our customers to bring products to market in a timely and cost-effective manner. We were incorporated in California in 1984, became a public company in 1989, and were reincorporated in the State of Delaware in February 1999. Our primary facilities housing engineering, sales and marketing, administration, and test operations are located in Austin, Texas. In addition, we have engineering, administrative and assembly facilities in Tucson, Arizona and sales locations internationally and throughout the United States. We also serve customers from international sales offices in Europe and Asia, including the People’s Republic of China, Hong Kong, South Korea, Japan, Singapore, Taiwan, and the United Kingdom. Our common stock, which has been publicly traded since 1989, is listed on the NASDAQ Global Select Market under the symbol CRUS. Basis of Presentation We prepare financial statements on a 52- or 53-week year that ends on the last Saturday in March. Fiscal years 2011 and 2010 were 52-week years, whereas fiscal year 2012 was a 53-week year. Principles of Consolidation The accompanying consolidated financial statements have been prepared in accordance with U. S. generally accepted accounting principles (U.S. GAAP) and include the accounts of the Company and its wholly-owned subsidiaries. All significant intercompany balances and transactions have been eliminated. Reclassifications Certain reclassifications have been made to prior year balances in order to conform to the current year’s presentation of financial information. Use of Estimates The preparation of financial statements in accordance with U.S. GAAP requires the use of management estimates. These estimates are subjective in nature and involve judgments that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at fiscal year-end and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from these estimates.

Description of Business

Cirrus Logic, Inc. (“Cirrus Logic,” “Cirrus,” “We,” “Us,” “Our,” or the “Company”) develops high-precision, analog and mixed-signal integrated circuits (“ICs”) for a broad range of consumer and industrial markets. Building on our diverse analog and mixed-signal patent portfolio, Cirrus Logic delivers highly optimized products for consumer and commercial audio, automotive entertainment, and targeted industrial applications including energy control, energy measurement and energy exploration. We also develop ICs, board-level modules and hybrids for high-power amplifier applications branded as the Apex Precision Power™ (“Apex”) line of products. We also provide complete system reference designs based on our technology that enable our customers to bring products to market in a timely and cost-effective manner.

We were incorporated in California in 1984, became a public company in 1989, and were reincorporated in the State of Delaware in February 1999. Our primary facilities housing engineering, sales and marketing, administration, and test operations are located in Austin, Texas. In addition, we have engineering, administrative and assembly facilities in Tucson, Arizona and sales locations internationally and throughout the United States. We also serve customers from international sales offices in Europe and Asia, including the People’s Republic of China, Hong Kong, South Korea, Japan, Singapore, Taiwan, and the United Kingdom. Our common stock, which has been publicly traded since 1989, is listed on the NASDAQ Global Select Market under the symbol CRUS.

Basis of Presentation

We prepare financial statements on a 52- or 53-week year that ends on the last Saturday in March. Fiscal years 2011 and 2010 were 52-week years, whereas fiscal year 2012 was a 53-week year.

Principles of Consolidation

The accompanying consolidated financial statements have been prepared in accordance with U. S. generally accepted accounting principles (U.S. GAAP) and include the accounts of the Company and its wholly-owned subsidiaries. All significant intercompany balances and transactions have been eliminated.

Reclassifications

Certain reclassifications have been made to prior year balances in order to conform to the current year’s presentation of financial information.

Use of Estimates

The preparation of financial statements in accordance with U.S. GAAP requires the use of management estimates. These estimates are subjective in nature and involve judgments that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at fiscal year-end and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from these estimates.