Exhibit 12.1

PMC-SIERRA, INC.

STATEMENT OF COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

	Year Ended
	December 29, 2012 (As Restated)			December 31, 2011		December 26, 2010		December 27, 2009		December 28, 2008
Earnings:
Loss (income) before income taxes and before income from equity investees	$	(282,027	)	$	80,883	$	113,324	$	51,101	$	58,280
Fixed charges:
Interest expense and amortization of debt issue costs	$	4,469		$	6,697	$	5,979	$	4,828	$	9,263
Rental interest factor (1)		3,714			4,295		3,755		3,594		3,618
Total fixed charges	$	8,183		$	10,992	$	9,734	$	8,422	$	12,881
(Loss) earnings available to cover fixed charges	$	(273,844	)	$	91,875	$	123,058	$	59,523	$	71,161
Ratio of earnings to fixed charges (2)		—			8.4x		12.6x		7.1x		5.5x

The ratio of earnings to fixed charges was computed by dividing earnings by fixed charges for the periods indicated. Earnings consist of income (loss) before provision for income taxes less income from equity investees plus fixed charges. Fixed charges consist of interest charges, amortization of debt issuance costs, and that portion of rental expense that the Company believes to be a reasonable approximation of the interest factor included in rental expense.

(1) The portion of operating lease rental expense that the Company believes to be a reasonable approximation of the interest factor is deemed to be one-third of total operating lease rental expense.

(2) Earnings were inadequate to cover fixed charges by $273.8 million for fiscal year ended December 29, 2012.