Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 30, 2012	Apr. 01, 2011	Mar. 30, 2012	Apr. 01, 2011
Net revenue	$ 364,690	$ 325,411	$ 758,430	$ 660,531
Cost of goods sold	212,418	184,430	434,308	371,012
Gross profit	152,272	140,981	324,122	289,519
Operating expenses:
Research and development	52,986	39,618	99,927	78,161
Selling, general and administrative	38,270	31,462	73,972	62,068
Arbitration costs	1,967	203	9,174	648
Amortization of intangibles	9,340	1,638	15,652	3,240
Restructuring Charges	5,895	0	6,615	0
Total operating expenses	108,458	72,921	205,340	144,117
Operating income	43,814	68,060	118,782	145,402
Interest expense	(107)	(461)	(588)	(998)
Gain on early retirement of convertible debt	63	0	139	0
Other loss, net	(310)	(114)	(211)	(183)
Income before income taxes	43,460	67,485	118,122	144,221
Provision for income taxes	9,427	17,525	26,963	33,393
Net income	$ 34,033	$ 49,960	$ 91,159	$ 110,828
Earnings per share:
Basic (in dollars per share)	$ 0.18	$ 0.27	$ 0.49	$ 0.61
Diluted (in dollars per share)	$ 0.18	$ 0.26	$ 0.48	$ 0.58
Weighted average shares:
Basic (in shares)	185,206	183,471	184,581	182,088
Diluted (in shares)	191,016	191,961	190,348	190,251