As filed with the Securities and Exchange Commission on August 26, 2004

Registration Statement No. 333-48270


SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
_________________

Post-Effective Amendment No. 1
to
FORM S-3
REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

_________________

   
   
   
   
   
Delaware
(State or other jurisdiction of
incorporation or organization)
Conexant Systems, Inc.
(Exact name of registrant as specified in its charter)
100 Schulz Drive
Red Bank, New Jersey 07701
(732) 345-7500
(Address, including zip code, and telephone number, including area code, of
registrant's principal executive offices)
   
   
   
   
   
25-1799439
(I.R.S. Employer
Identification No.)

__________________________________

      DENNIS E. O’REILLY, Esq.
Senior Vice President,
Chief Legal Officer and Secretary
Conexant Systems, Inc.
4000 MacArthur Boulevard, West Tower
Newport Beach, California 92660-3095
(949) 483-4600
(Name, address, including zip code, and telephone number,
including area code, of agent for service)

Copy to:
PETER R. Kolyer, Esq.
Chadbourne & Parke LLP
30 Rockefeller Plaza
New York, New York 10112
(212) 408-5100

        Approximate date of commencement of proposed sale to the public: This post-effective amendment withdraws from registration all shares of common stock that remain unsold under each of Registration Statements Nos. 333-30596, 333-38890, 333-42500, 333-48270, 333-61912, 333-67190 and 333-97285.

        If the only securities being registered on this Form are being offered pursuant to dividend or interest reinvestment plans, please check the following box. [   ]

        If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, other than securities offered only in connection with dividend or interest reinvestment plans, check the following box. [   ]

        If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act of 1933, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. [   ] __________

        If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act of 1933, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. [   ] _____________

        If delivery of the prospectus is expected to be made pursuant to Rule 434, please check the following box. [   ]

        This document shall serve as Post-Effective Amendment No. 1 to each of Registration Statements Nos. 333-30596, 333-38890, 333-42500, 333-48270, 333-61912, 333-67190 and 333-97285.


WITHDRAWAL OF SECURITIES FROM REGISTRATION

        Set forth below are Registration Statements on Form S-3 (collectively, the “Registration Statements”) filed by Conexant Systems, Inc., a Delaware corporation (“Conexant”), for purposes of registering the sale and/or resale of shares of Conexant’s common stock, par value $.01 per share (including the associated preferred share purchase rights), issued or issuable by Conexant in connection with the acquisitions set forth below (the “Shares”):

Filing Date Registration Number Acquisition
           
February 17, 2000 333-30596 Istari Design, Inc.
        Oak Technology Ltd.
        Microcosm Communications Limited
           
June 8, 2000 333-38890 Philsar Semiconductor Inc.
           
July 28, 2000 333-42500 HotRail, Inc.
        Sierra Imaging, Inc.
        Applied Telecom, Inc.
           
October 19, 2000 333-48270 Novanet Semiconductor Ltd.
           
May 30, 2001 333-61912 Microcosm Communications Limited
           
August 9, 2001 (amended 333-67190 Microcosm Communications Limited
September 28, 2001)     Applied Telecom, Inc.
        HyperXS Communications, Inc.
           
July 29, 2002 (amended 333-97285 Certain assets of iCompression, Inc.
January 26, 2003)        
           

           This Post-Effective Amendment to each of the Registration Statements is being filed to withdraw from registration under the Securities Act of 1933, as amended, all Shares that remain unsold under each of the Registration Statements.


PART II

INFORMATION NOT REQUIRED IN PROSPECTUS

Item 16.   Index to Exhibits.

24  Powers of Attorney authorizing certain persons to sign this post-effective amendment to each of the registration statements on behalf of certain directors and officers of Conexant
       

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-3 and has duly caused this Post-Effective Amendment to each of the Registration Statements to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Newport Beach, State of California, on the 26th day of August, 2004.

    CONEXANT SYSTEMS, INC.
       
       
       
    By   /s/ DENNIS E. O'REILLY                                       
              (Dennis E. O'Reilly, Senior Vice President,
              Chief Legal Officer and Secretary)

Pursuant to the requirements of the Securities Act of 1933, this Post-Effective Amendment to each of the Registration Statements has been signed on the 26th day of August, 2004 by the following persons in the capacities indicated:

Signature Title
       
DWIGHT W. DECKER* Chairman of the Board of Directors
       
ARMANDO GEDAY* Chief Executive Officer
    (principal executive officer) and Director
       
DONALD R. BEALL* Director
       
STEVEN J. BILODEAU* Director
       
RALPH J. CICERONE* Director
       
DIPANJAN DEB* Director
       
F. CRAIG FARRILL* Director
       
BALAKRISHNAN S. IYER* Director
       
JOHN W. MARREN* Director
       
D. SCOTT MERCER* Director
       
JERRE L. STEAD* Director
       
GIUSEPPE P. ZOCCO* Director
       
J. SCOTT BLOUIN* Senior Vice President and Chief Financial Officer
    (principal financial and accounting officer)
       
   


*By    /s/ DENNIS E. O'REILLY                                               
          (Dennis E. O'Reilly, Attorney-in-fact)**

** By authority of the powers of attorney filed as Exhibit 24 hereto.


EXHIBIT INDEX

Exhibit
Number
   
       
24  Powers of Attorney authorizing certain persons to sign this post-effective amendment to each of the registration statements on behalf of certain directors and officers of Conexant