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