Vitesse Semiconductor (VTSS) SC 13D/A VITESSE SEMICONDUCTOR / Raging Capital Management ownership change

Exhibit 99.1

Joint Filing Agreement

In accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Statement on Schedule 13D (including amendments thereto) with respect to securities of Vitesse Semiconductor Corporation.  This Joint Filing Agreement shall be filed as an Exhibit to such Statement.

Dated:  January 17, 2013	Raging Capital Master Fund, Ltd.
	By:	Raging Capital Management, LLC Investment Manager
	By:	/s/ Frederick C. Wasch
		Name:	Frederick C. Wasch
		Title:	Chief Financial Officer

Raging Capital Management, LLC
By:	/s/ Frederick C. Wasch
	Name:	Frederick C. Wasch
	Title:	Chief Financial Officer

/s/ Frederick C. Wasch

Frederick C. Wasch as attorney-in-fact for William C. Martin