XRT75L03D

www.DataSheet4U.com áç JUNE 2003 XRT75L03D REV. 1.0.0 THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER TRANSMITTER: GENERAL DESCRIPTION The XRT75L03D is a three-channel fully integrated Line Interface Unit (LIU) with Jitter Attenuator for E3/ DS3/STS-1 applications. It incorporates 3 independent Receivers, Transmitters and Jitter Attenuators in a single 128 pin LQFP package. Each channel of the XRT75L03D can be independently configured to operate in the data rate, E3 (34.368 MHz), DS3 (44.736 MHz) or STS-1 (51.84 MHz). Each transmitter can be turned off and tristated for redundancy support or for conserving power. The XRT75L03D’s differential receiver provides high noise interference margin and is able to receive the data over 1000 feet of cable or with up to 12 dB of cable attenuation. The XRT75L03D incorporates an advanced crystalless jitter attenuator per channel that can be selected either in the transmit or receive path. The jitter attenuator performance meets the ETSI TBR-24 and Bellcore GR-499 specifications. The XRT75L03D provides both Serial Microprocessor Interface as well as Hardware mode for programming and control. The XRT75L03D supports local, remote and digital loop-backs. The device also has a built-in Pseudo Random Binary Sequence (PRBS) generator and detector with the ability to insert and detect single bit error for diagnostic purposes. Compliant with Bellcore GR-499, GR-253 and ANSI T1.102 Specification for transmit pulse ...