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XRT73L06 Dataheets PDF



Part Number XRT73L06
Manufacturers Exar Corporation
Logo Exar Corporation
Description SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
Datasheet XRT73L06 DatasheetXRT73L06 Datasheet (PDF)

www.DataSheet4U.com XRT73L06 SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT REV. 1.0.2 OCTOBER 2003 GENERAL DESCRIPTION The XRT73L06 is a six channel fully integrated Line Interface Unit (LIU) for E3/DS3/STS-1 applications. The LIU incorporates 6 independent Receivers and Transmitters in a single 217 Lead BGA package. Each channel of the XRT73L06 can be independently configured to operate in E3 (34.368 MHz), DS3 (44.736 MHz) or STS-1 (51.84 MHz). Each transmitter can be turned off and tri-state.

  XRT73L06   XRT73L06



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www.DataSheet4U.com XRT73L06 SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT REV. 1.0.2 OCTOBER 2003 GENERAL DESCRIPTION The XRT73L06 is a six channel fully integrated Line Interface Unit (LIU) for E3/DS3/STS-1 applications. The LIU incorporates 6 independent Receivers and Transmitters in a single 217 Lead BGA package. Each channel of the XRT73L06 can be independently configured to operate in E3 (34.368 MHz), DS3 (44.736 MHz) or STS-1 (51.84 MHz). Each transmitter can be turned off and tri-stated for redundancy support or for conserving power. The XRT73L06’s differential receiver provides high noise interference margin and is able to receive data over 1000 feet of cable or with up to 12 dB of cable attenuation. The XRT73L06 provides a Parallel Microprocessor Interface for programming and control. FIGURE 1. BLOCK DIAGRAM OF THE XRT 73L06 The XRT73L06 supports analog, 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. APPLICATIONS • E3/DS3 Access Equipment • DSLAMs • Digital Cross Connect Systems • CSU/DSU Equipment • Routers • Fiber Optic Terminals CS RD WR Addr[7:0] D[7:0] PCLK RDY INT Pmode RESET XRT73L06 XRT73L06 µProcessor Interface CLKOUT_n SFM_en RLOL_n E3Clk DS3Clk STS-Clk/12M MUX Peak Detector Slicer Clock & Data Recovery LOS Detector Clock Synthesizer HDB3/ B3ZS Decoder RxClk_n RxPOS_n RxNEG/LCV_n RTIP_n RRing_n AGC/ Equalizer Local LoopBack Remote LoopBack RLOS_n TxClk_n TxPOS_n TxNEG_n TTIP_n TRing_n MTIP_n MRing_n DMO_n ICT Line Driver Tx Pulse Shaping Timing Control MUX HDB3/ B3ZS Encoder Device Monitor Tx Control TxON Channel 0 Channel n... Channel 5 ORDERING INFORMATION PART NUMBER XRT73L06IB PACKAGE 217 Lead BGA OPERATING TEMPERATURE RANGE -40°C to +85°C Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com XRT73L06 REV. 1.0.2 SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT FEATURES RECEIVER • Accepts either Single-Rail or Dual-Rail data from Terminal Equipment and generates a bipolar signal to the line • On chip Clock and Data Recovery circuit for high input jitter tolerance • Meets E3/DS3/STS-1 Jitter Tolerance Requirement • Detects and Clears LOS as per G.775 • Receiver Monitor mode handles up to 20 dB flat loss with 6 dB cable attenuation • Integrated Pulse Shaping Circuit • Built-in B3ZS/HDB3 Encoder (which can be disabled) • Accepts Transmit Clock with duty cycle of 30%70% • On chip B3ZS/HDB3 encoder and decoder that can be either enabled or disabled • Generates pulses that comply with the ITU-T G.703 pulse template for E3 applications • On-chip clock synthesizer provides the appropriate rate clock from a single 12.288 MHz Clock • Generates pulses that comply with the DSX-3 pulse template, as specified in Bellcore GR-499-CORE and ANSI T1.102_1993 • Provides low jitter output clock TRANSMITTER •.


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