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 Ω

• 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