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