peb2060 Infineon Technologies Corporation, peb2060 Datasheet

peb2060

Manufacturer Part Number

peb2060

Description

Signal Processing Codec Filter Sicofi

Manufacturer

Infineon Technologies Corporation

Datasheet

1.PEB2060.pdf (2 pages)

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Signal Processing Codec Filter (SICOFI )

General Description

The Signal Processing Codec Filter (SICOFI) PEB 2060 is a

fully integrated PCM codec (coder-decoder) and transmit/

receive filter produced in advanced CMOS technology for

applications in digital exchange telecommunication systems.

Based on a digital filter concept the PEB 2060 provides

improved transmission performance and high flexibility. It

enables the control of the device’s analog behavior by digital

signal processing, including attractive features such as

programmable trans-hybrid balancing, impedance matching,

level control and frequency response correction. The device

is optimized for working in conjunction with the PCM Interface

Controller PEB 2052/55.

The analog input signal is A/D converted, digitally filtered and

transmitted either PCM-encoded or linear. Antialiasing is

done with a 2

Converter (ADC) is a modified slope adaptive interpolative

coder with a sampling rate of 128 kHz. Digital downsampling

to 8 kHz is done by subsequent decimation filters D1 and D2

together with the PCM bandpass filter (BP).

The digital input signal is received PCM encoded or linear,

digitally filtered and D/A converted to generate the analog

output signal. Digital interpolation up to 128 kHz is done by

the PCM lowpass filter (LP) and the interpolation filters l1 and

l2. The D/A Converter (DAC) output is fed to the 2

Sallen-Key Postfilter (POFI).

The high flexibility of the SICOFI is based on a variety of user

programmable filter, which are analog gain adjustment AGR

and AGX, digital gain adjustment GR and GX, frequency

response adjustment R and X, impedance matching filter Z

and the trans-hybrid balancing filter B.

The SICOFI bridges the gap between analog and digital

voice signal transmission in modern telecommunication

systems.

High performance oversampling Analog-to-Digital Converter

(ADC) and Digital-to-Analog Converter (DAC) provide the

conversion accuracy required. An analog antialiasing

Prefilter (PREFI) and smoothing Postfilter (POFI) is included.

The dedicated on-chip Digital Signal Processor (DSP)

handles all the algorithms necessary, e.g. PCM bandpass

filtering, sample rate conversion and PCM comparing. The

3-pin serial SLD-Bus interface handles digital voice

transmission and SICOFI feature control. Specific filter

programming is done by downloading coefficients to the

Coefficient RAM (CRAM).

The 10-pin parallel signaling interface provides for a powerful

per line SLIC control.

Siemens Aktiengesellschaft

order Sallen-Key Prefilter (PREFI). The A/D

order

Type

PEB 2060-N

PEB 2060-P

Features

• Single-chip codec and filter

• Band limitation according to CClTT and LSSGR

• Digital signal processing techniques

• Digital voice transmission

• Programmable digital filters for

• Configurable 3-pin serial interface

• Programmable signaling interface with

• High performance A/D and D/A conversion

• Programmable analog gain

• Advanced test capabilities

• No trimming or adjustment

• No external components

• Variable SICOFI master clock selection

• Signaling expansion possible

• Prepared for three-party conferencing

• Advanced low power CMOS technology

recommendations

– PCM encoded (A-Law or -Law)

– linear (16-bit 2s complement)

– impedance matching

– transhybrid balancing

– gain

– frequency-response correction

– 512-kHz SLD-Bus (e.g. to PEB 2052/55)

– burst mode with bit rates up to 8 MHz

peripherals (e.g. SLIC)

– three digital loopback modes

– two analog loopback modes

– on-chip sinewave generation

Package

P-LCC-28-1 (SMD)

P-DIP-22-1

(not for new development)

PEB 2060

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peb2060 Summary of contents

Page 1

Signal Processing Codec Filter (SICOFI ) General Description The Signal Processing Codec Filter (SICOFI) PEB 2060 is a fully integrated PCM codec (coder-decoder) and transmit/ receive filter produced in advanced CMOS technology for applications in digital exchange telecommunication systems. Based ...

Page 2

Signal Processing Codec Filter (SICOFI ) VIN PREFI VOUT POFI Block Diagram A VIN AGX PREFI D Transmit Receive D VOUT AGR POFI A Signal Flow Siemens Aktiengesellschaft A D DSP ...

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