Exhibit 23.2

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the reference to our firm under the caption “Experts” in the Registration Statement (Amendment No. 1 to Form S-4) and related Prospectus of TranSwitch Corporation for the registration of 25,000,000 shares of its common stock and to the incorporation by reference therein of our reports dated March 13, 2008, with respect to the consolidated financial statements and schedule of Centillium Communications, Inc., and the effectiveness of internal control over financial reporting of Centillium Communications, Inc., included in its Annual Report (Form 10-K) for the year ended December 31, 2007, filed with the Securities and Exchange Commission.

/s/ Ernst & Young LLP

San Jose, California

September 11, 2008