Description
The Si2403 is a complete, ITU-V.22bis-compliant, 2400 bps modem chipset with integrated direct access arrangement (DAA) that provides a programmable line interface to meet global telephone line requirements with a single design. Available in two small packages, it eliminates the need for a separate DSP data pump, external RAM and ROM, modem controller, codec, isolation transformer, relays, opto-isolators, and 2- to 4-wire hybrid. The ISOmodem® chipset is ideal for embedded modem applications due to its small board space, low power consumption, and global compliance.

FEATUREs
■ Data modem formats
    • ITU-T, Bell
    • 300 bps up to 2400 bps
    • V.42, MNP2-4
■ Caller ID decode
■ 3.3 V power
■ No external ROM or RAM required
■ UART with flow control
■ AT command set support
■ Integrated DAA
    • Over 5000 V capacitive isolation
    • Parallel phone detect
    • Globally-compliant line interface
    • Overcurrent detection
■ Fast connect
■ Parallel interface
■ Call progress support
■ Firmware upgradeable

APPLICATIONs
■ Set-top boxes
■ E-mail terminals
■ Point-of-sale terminals
■ Digital video recorders
■ Security systems
■ Remote monitoring