PEF2256 データシートの表示（PDF） - Infineon Technologies

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PEF2256

Quad E1/T1/J1 Framer and Line Interface Component for Long and Short Haul Applications

Infineon Technologies 

E1/T1/J1 Framer and Line Interface Component for

Long- and Short-Haul Applications

FALC®56

PEF 2256 H/E

Version 2.1

1.1

Features

Line Interface

• High-density, generic interface for all

E1/T1/J1 applications

• Analog receive and transmit circuits for long-haul and

short-haul applications

• E1 or T1/J1 mode selectable

P-MQFP-80-1

• Data and clock recovery using an integrated

digital phase-locked loop

• Maximum line attenuation up to -43 dB at 1024 kHz

(E1)

and up to -36 dB at 772 kHz (T1/J1)

• Programmable receive equalizer characteristic

• Software-selectable receive line termination

• Programmable transmit pulse shapes for E1 and

T1/J1 pulse masks

P-LBGA-81-1

• Programmable line build-out for CSU signals

according to ANSI T1. 403 and FCC68: 0dB, -7.5 dB,

-15 dB, -22.5 dB (T1/J1)

• Low transmitter output impedances for high transmit return loss

• Tristate function of the analog transmit line outputs

• Analog switch for redundancy applications

• Transmit line monitor protecting the device from damage

• Receive line monitor mode

• Jitter specifications of ITU-T I.431, G.703, G.736 (E1), G.823 (E1) and AT&T

TR62411 (T1/J1) are met

• Crystal-less wander and jitter attenuation/compensation

Type

PEF 2256 H

PEF 2256 E

User’s Manual

Hardware Description

Package

P-MQFP-80-1

P-LBGA-81-1

18

DS1.1, 2003-10-23

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