Description The Si3050+Si3011/18/19 Voice DAA chipset provides a highly-programmable and globally-compliant foreign exchange office (FXO) analog interface. The solution implements Silicon Laboratories patented isolation capacitor technology, which eliminates the need for costly isolation transformers, relays, or opto-isolators, while providing superior surge immunity for robust field performance. The Voice DAA is available as a chipset, a system-side device (Si3050) paired with a line-side device (Si3011/18/19). The Si3050 is available in a 20-pin TSSOP or a 24-pin QFN. The Si3011/18/19 is available in a 16-pin TSSOP, a 16-pin SOIC, or a 20-pin QFN and requires minimal external components. The Si3050 interfaces directly to standard telephony PCM interfaces. Features ■ PCM highway data interface ■ µ-law/A-law companding ■ SPI control interface ■ GCI interface ■ 80 dB dynamic range TX/RX ■ Line voltage monitor ■ Loop current monitor ■ +6 dBm or +3.2 dBm TX/RX level mode ■ Parallel handset detection ■ 3 µA on-hook line monitor current ■ Overload detection ■ Programmable line interface ● AC termination ● DC termination ● Ring detect threshold ● Ringer impedance ■ TIP/RING polarity detection ■ Integrated codec and 2- to 4-wire analog hybrid ■ Programmable digital hybrid for near-end echo reduction ■ Polarity reversal detection ■ Programmable digital gain in 0.1 dB increments ■ Integrated ring detector ■ Type I and II caller ID support ■ Pulse dialing support ■ 3.3 V power supply ■ Daisy-chaining for up to 16 devices ■ Greater than 5000 V isolation ■ Patented isolation technology ■ Ground start and loop start support ■ Available in Pb-free RoHS-compliant packages Applications ■ DSL IADs ■ VoIP gateways ■ PBX and IP-PBX systems ■ Voice mail systems ■ DECT base stations
|