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

Over 6000 V capacitive isolation

Parallel phone detect

Globally-compliant line interface

Overcurrent detection

 AT command set support

 SMS / MMS support

 Firmware upgradeable

 EEPROM interface

 Commercial or industrial

temperature range

 DTMF detection/generation

 Si3000 Voice Codec Interface

Hardware support for mic,

speaker, and/or handset

Programmable voice filters,

limiters, and sidetone

Supports TBR-38, TIA/EIA-

4790 and other voice

standards

 Voice pass through with

compression

Supports telephone

answering machine, music

on hold, voice menus, etc

 Full-duplex speakerphone

support

Line echo cancellation

Acoustic echo cancellation

SI2494属于开发板，套件，编程器 > 评估和演示板及套件。美国思佳讯公司制造生产的SI2494评估和演示板及套件该系列产品提供了一种方便的方法，在经过验证的实施环境中评估某些重点器件的性能或特性。评估方法通常有完善的文档说明，并且视乎具体情况由评估软件提供支持。产品通常由印刷电路板组成，板上已装有重点器件以及必要或有用的支持元器件，另外也可能包括其他组件，例如电缆或电源。对于数量特别多或类别独特的器件类别(如 ADC、DAC 和开关模式电源)，评估平台可组合为一个单独的产品系列。