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www.DataSheet4U.com CX06833-3x/4x SMXXD Modem V.92/V.34/V.32bis Modem in 144-Pin TQFP with Optional CX20442 Voice Codec Data Sheet Doc. No. 102228B July 1, 2003 CX06833-3x/4x SMXXD Modem Data Sheet Revision Record Revision B A Date 7/1/2003 6/13/2003 Comments Rev. B release. Initial release. © 2003 Conexant Systems, Inc. All Rights Reserved. Information in this document is provided in connection with Conexant Systems, Inc. (“Conexant”) products. These materials are provided by Conexant as a service to its customers and may be used for informational purposes only. Conexant assumes no responsibility for errors or omissions in these materials. Conexant may make changes to specifications and product descriptions at any time, without notice. Conexant makes no commitment to update the information and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to its specifications and product descriptions. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Conexant’s Terms and Conditions of Sale for such products, Conexant assumes no liability whatsoever. THESE MATERIALS ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, RELATING TO SALE AND/OR USE OF CONEXANT PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, CONSEQUENTIAL OR INCIDENTAL DAMAGES, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. CONEXANT FURTHER DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. CONEXANT SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS, WHICH MAY RESULT FROM THE USE OF THESE MATERIALS. Conexant products are not intended for use in medical, lifesaving or life sustaining applications. Conexant customers using or selling Conexant products for use in such applications do so at their own risk and agree to fully indemnify Conexant for any damages resulting from such improper use or sale. The following are trademarks of Conexant Systems, Inc.: Conexant and the Conexant C symbol. Product names or services listed in this publication are for identification purposes only, and may be trademarks of third parties. Third-party brands and names are the property of their respective owners. For additional disclaimer information, please consult Conexant’s Legal Information posted at www.conexant.com, which is incorporated by reference. Reader Response: Conexant strives to produce quality documentation and welcomes your feedback. Please send comments and suggestions to tech.pubs@conexant.com. For technical questions, contact your local Conexant sales office or field applications engineer. ii Conexant 102228A CX06833-3x/4x SMXXD Modem Data Sheet Contents 1. Introduction..........................................................................................................................................1-1 1.1 1.2 1.3 1.4 Overview ......................................................................................................................................................................... 1-1 Applications .................................................................................................................................................................... 1-2 Features .......................................................................................................................................................................... 1-4 1.3.1 General Modem Features ............................................................................................................................... 1-4 Technical Overview......................................................................................................................................................... 1-5 1.4.1 General Description ........................................................................................................................................ 1-5 1.4.2 MCU Firmware................................................................................................................................................ 1-6 1.4.3 Operating Modes ............................................................................................................................................ 1-6 1.4.3.1 Data/Fax Modes.......................................................................................................................... 1-6 1.4.3.2 V.44 Data Compression.............................................................................................................. 1-7 1.4.3.3 Country Support......................................................................................................................... 1-7 1.4.3.4 TAM Mode.................................................................................................................................. 1-7 1.4.3.5 Speakerphone Mode (S Models)................................................................................................ 1-8 1.4.4 Reference Designs.......................................................................................................................................... 1-9 Hardware Description ..................................................................................................................................................... 1-9 1.5.1 CX06833 Modem Device ................................................................................................................................ 1-9 1.5.2 CX20442 Voice Codec .................................................................................................................................... 1-9 AT Commands .............................................................................................................................................................. 1-10 Serial DTE Interface Operation........................................................................................................................................ 2-1 2.1.1 Automatic Speed/Format Sensing .................................................................................................................. 2-1 Parallel Host Bus Interface Operation............................................................................................................................. 2-2 Establishing Data Modem Connections .......................................................................................................................... 2-2 2.3.1 Dialing ............................................................................................................................................................ 2-2 2.3.2 Telephone Number Directory ......................................................................................................................... 2-2 2.3.3 Modem Handshaking Protocol ....................................................................................................................... 2-2 2.3.4 Call Progress Tone Detection ......................................................................................................................... 2-2 2.3.5 Answer Tone Detection .................................................................................................................................. 2-2 2.3.6 Ring Detection................................................................................................................................................ 2-2 2.3.7 Billing Protection ............................................................................................................................................ 2-3 2.3.8 Connection Speeds......................................................................................................................................... 2-3 2.3.9 Automode ....................................................................................................................................................... 2-3 1.5 1.6 2.1 2.2 2.3 2. Technical Specifications .......................................................................................................................2-1 102228A Conexant iii CX06833-3x/4x SMXXD Modem Data Sheet 2.4 Data Mode ...................................................................................................................................................................... 2-4 2.4.1 Speed Buffering (Normal Mode) .................................................................................................................... 2-4 2.4.2 Flow Control ................................................................................................................................................... 2-4 2.4.3 Escape Sequence Detection ........................................................................................................................... 2-4 2.4.4 BREAK Detection ............................................................................................................................................ 2-4 2.4.5 Telephone Line Monitoring............................................................................................................................. 2-4 2.4.6 Fall Forward/Fallback (V.92/V.90/V.34/V.32 bis/V.32) ................................................................................... 2-4 2.4.7 Retrain ............................................................................................................................................................ 2-5 2.4.8 Programmable Inactivity Timer ...................................................................................................................... 2-5

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