[ARTICLE] 5 [MULTIPLIER] 1,000 EXHIBIT 22.1 CIRRUS LOGIC INC. SUBSIDIARIES OF REGISTRANT Acumos Incorporated (California) Cirel Inc. (California) Ciror, Inc. (California) Cirrus Logic Holdings, Inc. (California) Cirrus Logic International Ltd. (Bermuda) Cirrus Logic International SARL (France) Cirrus Logic Korea Co., LTD. (Korea) Cirrus Logic, GmBh. (Germany) Cirrus Logic, K.K. (Japan) Cirrus Logic, Software India, Pvt. Ltd. (India) Cirrus Logic (U.K.) Limited (United Kingdom) Crystal Semiconductor Corporation (Delaware) Pacific Communications Sciences, Inc. (Delaware)