KEY FEATURES

? Two complete FXS channels in a single

7x7 or 8x8 mm package

? Performs all BORSCHT functions

? Ideal for short- or medium-loop

applications

? Ultra-low power consumption

? Patented low-power ringing

? Patent-pending Smart Ringing

? Reduces peak current with 2-channel

ringing

? Adaptive ringing

? Simplified configuration and diagnostics

? Supported by ProSLIC API

? Audio diagnostics with loopback

? Integrated test load

? Wideband voice support

? On-hook transmission

? Loop or ground start operation

? Smooth polarity reversal

? Programmable interrupts

? Software-programmable parameters:

? Ringing frequency, amplitude, cadence,

and waveshape

? Two-wire ac impedance

? Transhybrid balance

? DC current loop feed (10–45 mA)

? Loop closure and ring trip thresholds

? Ground key detect threshold

? Flexible integrated tracking DC-DC

controller supporting patent-pending lowcost

capacitive boost configuration

? DTMF Generation

? DTMF Detection (Si32281/3/5/7)

? 3-wire Integrated Serial Interface (ISI) or

PCM interface

? A-Law/μ-Law companding, linear PCM

? Pulse metering

? 3.3 V operation

? Pb-free/RoHS-compliant packaging

SI32281-A-GM屬于集成電路（IC） > 電信。美國思佳訊公司制造生產(chǎn)的SI32281-A-GM電信電信接口集成電路 (IC) 為通信網(wǎng)絡(luò)接口提供特定功能和控制，例如以太網(wǎng)切換、線路驅(qū)動器、ISDN、放大器、通道擴(kuò)展器、數(shù)字鎖相環(huán)、DTMF、音頻發(fā)生器和解碼器、回聲消除、檢測器和發(fā)生器、DDA、電話線路監(jiān)控器和主叫號碼標(biāo)識。