XRT79L74 Datasheet - Exar Corporation

XRT79L74 4-CHANNEL DS3/E3 ATM UNI/PPP COMBO IC

www.DataSheet4U.com PRELIMINARY LINE INTERFACE UNIT XRT79L74 REV. P1.0.0 4 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC MARCH 2004 REGISTER MANUAL The XRT79L74 is a four channel, ATM UNI/PPP Physical Layer Processor with integrated DS3/E3 framing controllers and Line Interface Units with Jitter Attenuators that are designed to support ATM direct mapping and cell delineation as well as PPP mapping and Frame processing. For ATM UNI applications, this device provides the ATM Physical Layer (Physical M.

XRT79L74 Features

* On chip Clock and Data Recovery circuit for high input jitter tolerance

* Meets E3/DS3 Jitter Tolerance Requirements

* Detects and Clears LOS as per G.775.

* Receiver Monitor mode handles up to 20 dB flat loss with 6 dB cable attenuation

* Compliant with

XRT79L74_ExarCorporation.pdf