KEY FEATURES

? Two complete FXS channels in a single

8x8 mm package

? Performs all BORSCHT functions

? Ultra-low power consumption

? Patented low-power ringing

? Patented Smart Ringing option

? Reduces peak current with 2-channel

ringing (Si32295/7)

? Adaptive ringing

? Simplified configuration and diagnostics

? Supported by SimpleVoice 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 patented low-cost

capacitive ultra-boost configuration

? DTMF Generation

? DTMF Detection (Si32291/3/5/7)

? 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