PEF3452集成電路（IC）的電信規(guī)格書PDF中文資料

PEF3452屬于集成電路（IC）的電信。由英飛凌科技股份公司制造生產(chǎn)的PEF3452電信電信接口集成電路 (IC) 為通信網(wǎng)絡接口提供特定功能和控制，例如以太網(wǎng)切換、線路驅動器、ISDN、放大器、通道擴展器、數(shù)字鎖相環(huán)、DTMF、音頻發(fā)生器和解碼器、回聲消除、檢測器和發(fā)生器、DDA、電話線路監(jiān)控器和主叫號碼標識。

Overview

The TE3-LIU? PEF 3452 Line Interface Unit is used to connect a DS3/STS-1 or E3 framer device to an analog transmission line. The line interface fulfills the relevant standards for DS3 (44.736 Mbit/s), STS-1 (51.840 Mbit/s) and E3 (34.368 Mbit/s) systems.

The TE3-LIU? comes in a P-MQFP-44-2 package (SMD) to save a significant amount of board space. The integrated jitter attenuation further reduces overall system complexity and cost.

Features

? Generic analog interface for all DS3/STS-1/E3 applications

? Single chip solution for receive and transmit direction

? 3.3 V low power device

? Integrated receive equalization network

? Integrated noise and crosstalk filter

? Clock and data recovery using an integrated PLL with ultra-low intrinsic jitter

? Transmit clock duty cycle correction PLL

? No external components required for clock and data recovery and receive equalizer

? DSX receive line monitor (additional 20 dB gain according to ANSI T1.102)

? Low transmitter output impedances for high transmit return loss

? Disable function of the analog transmit line outputs

? Transmit pulse shaper to fulfill requirements of ANSI T1.404, Telcordia GR-499-CORE, ANSI T1.102 and ITU-T G.703 (E3)

? Maximum line length up to 1100 ft. (using standard coaxial cable, for example AT&T 728A, 734A or 734D)

? External line length selection (LBO) is not required

? Jitter specifications of GR-499-CORE and ITU-T G.823 are met

? Integrated jitter attenuation PLL and buffer in transmit direction

? Dual or single rail digital inputs and outputs from/to the framer interface

? Selectable line codes (HDB3 (E3), B3ZS (DS3/STS-1), AMI)

? Analog and digital loss of signal detection and indication

? Automatic RDOP/RDON blanking option in case of LOS

? Bipolar violation indication

? Local loop and remote loop for diagnostic purposes

? Insertion of alarm indication signal (all ones)

? Flexible hardware or software controlled device configuration

? Device power down function

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