Si3217x-C Features

 Complete FXS solution in 5 x 7 mm

 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

(Si32174/6/7)

 On-hook transmission

 Loop or ground start operation

 Smooth polarity reversal

 PCM and SPI bus digital interfaces

with programmable interrupts

 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

 GCI/IOM-2 mode support

 DTMF generation

 DTMF detection (Si32170/1/4)

 Pulse metering (Si32170/1)

 3.3 V operation

 Support for 1.8 V I/O

 Maximum battery up to –140 V

 Pb-free/RoHS-compliant

packaging