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Skip Navigation LinksConexant > Products > Modem > Legacy Products > Soft Modems > CX11254-51Z - SmartMC3Z High Definition Audio Software Modem with SmartDAA


SmartMC3Z High Definition Audio Software Modem with SmartDAA




The Conexant CX11254-51Z SmartMC3Z High Definition Audio (HDA) Software Modem Codec (MC) Device Set with Conexant's third generation SmartDAA® 3 technology supports V.92/V.90 analog receive data up to 56 kbps with V.44 data compression, V.17 analog fax to 14.4 kbps, telephony/voice/telephone answering machine (TAM), and HDA interface operation. The modem operates with PSTN telephone lines worldwide. The SmartMC3Z with HDA interface supports the following board architectures: Mobile Daughter Card (MDC) and Desktop solution. The SmartMC3Z modem device set consists of a CX11254-51Z Host Side Device (HSD) in a 16-pin TSSOP and a CX20493-58 SmartDAA 3 Line Side Device (LSD) in a 28-pin QFN.



  • Supports V.92/V.90 analog receive data rates up to 56 Kbps with V.44 data compression
  • Supports V.17 analog fax data rates to 14.4 Kbps
  • Supports telephony/voice/TAM functionality
  • Thin packages enable low-profile mobile MDC designs
  • Enhanced in-silicon Wake-On Ring circuitry simplifies WHQL compliance
  • Shares same board design and layout as SmartMC3S

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