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SI2439 Datasheet V.92 AND V.34 ISOMODEM

Manufacturer: Silicon Laboratories

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General Description

The Si2494/39 ISOmodem is a full-featured ITU V.92/V.34-compliant modem that provides connect rates of up to 56 kbps, full-duplex, over the public switched telephone network (PSTN).

Offered as a chipset with the Si2494/39 system-side device and the Si3018 line-side device, the ISOModem utilizes Silicon Laboratories’ patented direct access arrangment (DAA) technology to provide a programmable telephone line interface with an unparalleled level of integration.

This compact solution eliminates the need for a separate DSP, modem controller, codec, transformer, relay, opto-isolators, clocking crystal, and 2-4 wire hybrid.

Overview

Si2494/39 V.

9 2 AND V.

3 4 I S O MODEM® WITH G LOBAL D A A.

Key Features

  • Data modem formats.
  • ITU-T, Bell.
  • 300 bps up to 56 kbps.
  • V.21,V.22, V.29 Fast Connect.
  • V.44, V.42, V.42bis, MNP2-5.
  • Automatic rate negotiation.
  • V.92 PCM upstream.
  • V.92 Quick connect.
  • V.92 Modem on hold.
  • Type I and II caller ID decode.
  • No external ROM or RAM required.
  • UART, SPI, or parallel interface.
  • Flexible clock options.
  • Low-cost 32.768 kHz oscillator.
  • 4.915 MHz oscillator.
  • 27 MHz clock input.
  • Integrated DAA.

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