xr XRT83D10 SINGLE CHANNEL DS1/CEPT LINE INTERFACE UNIT JULY 2004 REV. 1.0.3 On-Chip Pulse Shaping for both 75 ,120 and GENERAL DESCRIPTION 100 Line Drivers The XRT83D10 is a fully integrated, single channel, Clock Recovery and Selectable Crystal-less Jitter Line Interface Unit (Transceiver) for 75 or 120 E1 attenuator (2.048 Mbps) and 100 DS1 (1.544 Mbps) Compliant with ETS300166 Return Loss applications. The LIU consists of a receiver with Compliant with the ITU-T G.823 Jitter Tolerance adaptive data slicer for accurate data and clock Requirements recovery and a transmitter which accepts dual-rail digital inputs for signal transmission to the line using Remote, Local and Digital Loop backs a low- impedance differential line driver. The LIU also Declares and Clears LOS per ITU-T G.775 includes a crystal-less jitter attenuator for clock and -40C to 85C Temperature Range data smoothing which, depending on system Low Power Dissipation requirements, can be selected in either the transmit or receive path. +5V or +3.3V Supply Operation The XRT83D10 uses the transformer coupling on Pin Compatible with AGERE T7290A and T5290A both the Receiver and Transmitter sides, and APPLICATIONS supports both 120 balanced,75 unbalanced and 100 interfaces. PDH Multiplexers SDH Multiplexers FEATURES Digital Cross-Connect Systems DECT (Digital European Cordless Telephone) Base Complete E1 (CEPT) and DS1 Line Interface Unit Stations Generates transmit output pulses that are compli- CSU/DSU Equipment ant with the ITU-T G.703 Pulse Template for 2.048Mbps (E1) rates FIGURE 1. BLOCK DIAGRAM OF THE XRT83D10 RLOS ALOS DLOS DLOS RTIP Peak 2 2 RPDATA Receive Detector RNDATA Local Digital Data & Data Data Loopback Loopback Timing Slicer RRING MODE1 LP1 LP3 RCLK Recovery MODE2 2 FOFS 2 Timing EXCLK Generator Jitter Attenuator SCLK 2 TTIP 2 TPDATA 2 Tx Line Pulse Transmit 2 TNDATA Remote Data Driver Equalizer 2 Looback TRING LP2 TCLK Transmit EXCLK EXCLK Monitor MODE2 Loss of TAOS TAOS TAOS TAOS EC1 EC1 Clock EC2 EC2 TSC EC3 EC3 P MODE1 MODE1 EXCLK MODE2 MODE2 Interface LOOPA Local ICT CLKLOS JA LOOPB Remote Decode Clock CS Digital V , GND 4 DDA A V , GND DDD D Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com +XRT83D10 xr REV. 1.0.3 SINGLE CHANNEL DS1/CEPT LINE INTERFACE UNIT PRODUCT ORDERING INFORMATION PRODUCT NUMBER PACKAGE TYPE OPERATING TEMPERATURE RANGE XRT83D10IW 28 Lead 300 Mil Jedec SOJ -40C to +85C FIGURE 2. PIN OUT OF THE XRT83D10 1 28 EC2 EC1 2 27 EC3 ICT 3 26 DGND AVDD 4 25 TRING AGND 5 24 DVDD RRING 6 23 RTIP TTIP 7 22 RNDATA MODE2 8 21 RPDATA MODE1 9 20 RCLK LOOPB 10 19 TNDATA LOOPA TAOS 11 18 TPDATA TCLK RLOS 12 17 EXCLK FOFS 13 16 CS CLKLOS 14 15 2