CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Thousands	Sep. 30, 2011	Mar. 31, 2011
ASSETS
Cash and cash equivalents	$ 675,129	$ 703,924
Short-term investments	740,309	539,572
Accounts receivable, net	142,409	181,202
Inventories	211,206	180,800
Prepaid expenses	22,367	22,234
Deferred tax assets	96,488	88,822
Other current assets	45,468	58,429
Total current assets	1,933,376	1,774,983
Property, plant and equipment, net	548,977	540,513
Long-term investments	359,980	464,838
Goodwill	76,061	76,018
Intangible assets, net	76,503	77,929
Other assets	38,852	33,777
Total assets	3,033,749	2,968,058
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	57,792	68,433
Accrued liabilities	92,176	131,839
Deferred income on shipments to distributors	144,185	140,044
Total current liabilities	294,153	340,316
Junior convertible debentures	351,371	347,334
Long-term income tax payable	65,040	58,125
Deferred tax liability	409,372	399,527
Other long-term liabilities	9,874	10,318
Stockholders' equity:
Preferred stock, $0.001 par value; 5,000,000 shares authorized; no shares issued or outstanding.	0	0
Common stock, $0.001 par value; 450,000,000 shares authorized; 218,789,994 shares issued and 191,127,533 shares outstanding at September 30, 2011; 218,789,994 shares issued and 189,541,707 shares outstanding at March 31, 2011	191	190
Additional paid-in capital	1,270,008	1,268,128
Retained earnings	1,475,312	1,428,838
Accumulated other comprehensive (loss) income	(596)	3,357
Common stock held in treasury: 27,662,461 shares at September 30, 2011; 29,248,287 shares at March 31, 2011	(840,976)	(888,075)
Total stockholders' equity	1,903,939	1,812,438
Total liabilities and stockholders' equity	$ 3,033,749	$ 2,968,058