PEB2465H Ver la hoja de datos (PDF) - Infineon Technologies

Número de pieza

componentes Descripción

Fabricante

PEB2465H

4-channel codec filter

Infineon Technologies 

SICOFI-4

PEB 2465

Functional Description

Figure 3 SICOFI-4 Block Diagram

The SICOFI-4 bridges the gap between analog and digital voice signal transmission in

modern telecommunication systems. High performance oversampling Analog-to-Digital

Converters (ADC) and Digital-to-Analog Converters (DAC) provide the required

conversion accuracy. Analog antialiasing prefilters (PREFI) and smoothing postfilters

(POFI) are included. The connection between the ADC and the DAC (with high sampling

rate) and the DSP, is done by specific Hardware Filters, for filtering like interpolation and

decimation. The dedicated Digital Signal Processor (DSP) handles all the algorithms

necessary e.g. for PCM bandpass filtering, sample rate conversion and PCM

companding. The IOM-2 Interface handles digital voice transmission, SICOFI-4 feature

control and transparent access to the SICOFI-4 command and indication pins. To

program the filters, precalculated sets of coefficients are downloaded from the system to

the on chip coefficient ram (CRAM).

Data Sheet

18

2000-02-08

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