General Description

The four channel Signal Processing Codec Filter PEB 2466 SICOFI-4-μC is the logical continuation of a well established family of SIEMENS programmable codec-filter-ICs.

Its major difference to the PEB 2465 (SICOFI-4) is the PCM and μC interface, which replaces the IOM-2 interface.

特性 Features

? Single chip programmable CODEC and FILTER to handle four

– Central Office

– or PABX-channels

? Specification according to relevant CCITT, EIA and LSSGR recommendations

? Digital signal processing technique

? Serial μ-Controller interface

? 2 programmable PCM-interfaces (up to 8 Mbit/s)

? Programmable interface to electronic SLICs and transformer solutions for signaling information

? High analog driving capability (300 ?) for direct driving of transformers

? Programmable digital filters to adapt the transmission behaviour especially for

– AC impedance matching

– transhybrid balancing

– frequency response

– gain

– A/μ-law conversion

? Single 5 V power supply

? Advanced low power 0.9 μm analog CMOS technology

? Low power consumption (< 35 mW per channel)

? High performance A/D conversion

? High performance D/A conversion

? Advanced test capabilities

– five digital loops

– four analog loops

– two programmable tone generators (DTMF possible)

– built in self-test

– level metering function for system tests

? Standard P-MQFP-64 package

? Comprehensive development platform available

– software for automatic filter coefficient calculation - QSICOS

– Hardware development board - STSI 2466