Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Dec. 28, 2012	Dec. 30, 2011
Net revenue	$ 453,723	$ 393,740
Cost of goods sold	261,158	221,890
Gross profit	192,565	171,850
Operating expenses:
Research and development	58,054	46,941
Selling, general and administrative	38,128	42,909
Amortization of intangibles	8,156	6,312
Restructuring and other charges	1,644	720
Total operating expenses	105,982	96,882
Operating income	86,583	74,968
Interest expense	(11)	(481)
Other income, net	270	175
Income before income taxes	86,842	74,662
Provision for income taxes	20,349	17,536
Net income	$ 66,493	$ 57,126
Earnings per share:
Basic (in dollars per share)	$ 0.35	$ 0.31
Diluted (in dollars per share)	$ 0.34	$ 0.30
Weighted average shares:
Basic (in shares)	189,377	183,956
Diluted (in shares)	194,001	189,682