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General Description

The Signal Processing Subscriber Line Interface Codec Filter SLICOFI (PEB 3065/PEF 3065) is a logic continuation of the well established family of the SIEMENS PCM-Codec-Filter-IC’s with the vertical integration of all DC-feeding, Supervision and Meterpulse Injection features on chip as well. Fabricated in a standard 1 μm BiCMOS technology the SLICOFI is tailored for very flexible solutions in digital communication systems.

Features

? Single chip CODEC and FILTER including all LOW VOLTAGE SLIC functions

? Only few external components required

? No trimming or adjustments required

? Specification according to relevant CCITT, LSSGR and DBP recommendations

? Digital signal processing technique

? Advanced low power 1 μm BiCMOS1) technology

? PCM encoded digital voice transmission (A-Law or μ-Law)

? Four pin serial IOM-2 Interface

? Standard P-LCC-44 package

? High performance AD and DA Conversion

? Programmable digital filters for

– Impedance matching

– Transhybrid balancing

– Frequency response

– Gain

? Advanced test capabilities

– Integrated line and circuit tests

– Two programmable tone generators

? Optimized HV-SLIC Interface

? Fully digital programmable DC-Characteristic

– Programmable Constant Current from 0-70 mA

– Programmable Resistive Values from 0-2 × 500 ?

? Programmable Integrated Teletax Injection and Filtering during Conversation and Onhook

– Programmable up to 125 mVrms (5 Vrms at ab-wire)

– Programmable frequency 12/16 kHz

? Polarity reversal (programmable soft or hard)

? Integrated (balanced) Ringing Generation with zero crossing injection

– Programmable frequency between 16.6 and 70 Hz (up to 300 Hz for test)

– Programmable amplitude up to 2.125 Vrms (85 Vrms at ab-wire)

? Four operating modes: Power Denial, Power Down, Active and Ringing

? Offhook detection with programmable thresholds for all operating modes

? Integrated Ring Trip Detection with zero crossing turn off function

? Ground Start and Loop Start possible

? Integrated checksum Calculation for CRAM

? Line Card Identification