(19)

(11)

EP 1 258 005 A1

(12)

(43) Date of publication: 20.11.2002 Bulletin 2002/47 (21) Application number: 01903335.6 (22) Date of filing: 25.01.2001

(51) International Patent Classification (IPC)7: G11C 7/16 (86) International application number: PCT/US0102/558 (87) International publication number: WO 0105/7872 (09.08.2001 Gazette 2001/32)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 01.02.2000 US 495813 30.06.2000 US 609023 (71) Applicant: Cirrus Logic, Inc. Austin, TX 78760 (US)	(72) Inventors: NORTH, Gregory, Allen Austin, TX 78733 (US) PERRY, Matthew, Richard Austin, TX 78750 (US) KIRCHER, Brian, Christopher Round Rock, TX 78681 (US) (74) Representative: Popp, Eugen, Dr. et al MEISSNER, BOLTE & PARTNERPostfach 86 06 24 81633 München 81633 München (DE)