Description

The Si3233 ProSLIC® is a low-voltage CMOS device that provides a multi-functional subscriber line interface ideal for customer premise equipment (CPE) applications. The ProSLIC integrates subscriber line interface circuit (SLIC) and battery generation functionality into a single CMOS integrated circuit. The integrated battery supply continuously adapts its output voltage to minimize power and enables the entire solution to be powered from a single 3.3 V (Si3233M only) or 5 V supply. The ProSLIC controls the phone line through Silicon Labs’ Si3201 Linefeed IC or discrete circuitry.

Features

■ Software Programmable SLIC with codec interface

■ Software programmable internal balanced ringing up to 90 VPK (5 REN up to 4 kft, 3 REN up to 8 kft)

■ Integrated battery supply with dynamic voltage output

• On-chip dc-dc converter continuously minimizes power in all operating modes

• Entire solution can be powered from a single 3.3 V or 5 V supply

• 3.3 V to 35 V dc input range

• Dynamic 0 V to –94.5 V output

■ Software programmable linefeed parameters:

• Ringing frequency, amplitude, cadence, and waveshape

• 2-wire ac impedance

• constant current feed (20 to 41 mA)

• Loop closure and ring trip thresholds and filtering

■ Software programmable signal generation and audio processing:

• Phase-continuous FSK (caller ID) generation

• Dual audio tone generators

• Smooth and abrupt polarity reversal

■ Extensive test and diagnostic features

• Realtime dc linefeed measurement

• GR-909 line test capabilities

■ SPI control interface

■ Extensive programmable interrupts

■ 100 software configurable global solution

■ Lead-Free and RoHS-compliant

Applications

■ Interface to Broadcom devices

• BCM11xx residential gateway

• BCM3341 VOIP processor

• BCM33xx cable modem

■ Voice over IP

■ Terminal adapters

■ Fixed cellular terminal