pef2256e Infineon Technologies Corporation, pef2256e Datasheet - Page 18

• Manufacturer Part Number: pef2256e
• Description: E1/t1/j1 Framer And Line Interface Component For Long- And Short-haul Applications
• Manufacturer: Infineon Technologies Corporation

E1/T1/J1 Framer and Line Interface Component for
Long- and Short-Haul Applications
FALC
Version 2.1
1.1
Line Interface
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Type
PEF 2256 H
PEF 2256 E
User’s Manual
Hardware Description
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
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
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
®
56
Features
18
Package
P-MQFP-80-1
P-LBGA-81-1
P-MQFP-80-1
P-LBGA-81-1
DS1.1, 2003-10-23
PEF 2256 H/E