Description
The Dual ProSLIC® is a family of low-voltage CMOS devices that integrate both SLIC and CODEC functionality into a single IC. In combination with a linefeed IC (LFIC), they provide a complete two-channel analog telephone interface in accordance with all relevant LSSGR, ITU, and ETSI specifications.

Features
■ Performs all BORSCHT functions
■ Ideal for short- or long-loop applications
■ Internal balanced or unbalanced ringing
■ Low power consumption
■ 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
■ Integrated dc-dc controller
■ Wideband CODEC (Si3227)
■ Low-power sleep mode
■ On-hook transmission
■ Loop or ground start operation
■ Smooth polarity reversal
■ DTMF generator/decoder
■ A-Law/µ-Law companding, linear PCM
■ PCM and SPI bus digital interfaces with programmable interrupts
■ GCI/IOM-2 mode support
■ 3.3 V operation
■ GR-909 loop diagnostics
■ Audio diagnostics with loopback
■ Pb-free/RoHS-compliant packaging

Applications
■ Customer Premises Equipment (CPE)
■ Optical Network Terminals (ONT)
■ Private Branch Exchange (PBX)
■ Cable EMTAs, ATAs, VoIP Gateways