Si32172/3/5 Features

? Complete FXS solution in 5 x 7 mm

? 3-wire ISI combines PCM, SPI, and

interrupt data

? Performs all BORSCHT functions

? Ideal for short to medium loops

? Global programmability

? Internal balanced or unbalanced

ringing

? Patented low power ringing

? Simplified configuration and

diagnostics

? Supported by ProSLIC API

? Ultra low power consumption

? Integrated tracking dc-dc controller

with direct connection to MOSFET

? Wideband voice support

(Si32172/3)

? On-hook transmission

? Loop or ground start operation

? Smooth polarity reversal

? A-Law/μ-Law companding,

linear PCM

? 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

? DTMF generation

? DTMF detection (Si32175)

? Pulse metering

? 3.3 V operation

? Support for 1.8 V I/O

? Maximum battery up to –140 V

? Pb-free/RoHS-compliant

packaging