XRT79L73

www.DataSheet4U.com PRELIMINARY LINE INTERFACE U NIT XRT79L73 REV. P1.0.0 3 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC JUNE 2004 HARDWARE MANUAL The XRT79L73 is a three 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 Medium Dependent and Transmission Convergence sub-layers) interface for the public and private networks at DS3/E3 rates. For Clear-Channel Framer applications, this device supports the transmission and reception of “user data” via the DS3/E3 payload. The XRT79L73 includes DS3/E3 Framing, Line Interface Unit with Jitter Attenuator that supports mapping of ATM or HDLC framed data. A flexible parallel microprocessor interface is provided for configuration and control. Industry standard UTOPIA II and POS-PHY interface are also provided. GENERAL 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 jitter transfer template outlined in ITU G.751, G.752, G.755 and GR-499-CORE,1995 standards Meets ETSI TBR 24 and GR-499 Jitter Transfer Requirements On chip B3ZS/HDB3 encoder a...