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XRT83SH38_0609 Datasheet(PDF) 1 Page - Exar Corporation |
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XRT83SH38_0609 Datasheet(HTML) 1 Page - Exar Corporation |
1 / 78 page Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com XRT83SH38 8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT SEPTEMBER 2006 REV. 1.0.7 GENERAL DESCRIPTION The XRT83SH38 is a fully integrated 8-channel short- haul line interface unit (LIU) that operates from a single 3.3V power supply. Using internal termination, the LIU provides one bill of materials to operate in T1, E1, or J1 mode with minimum external components. The LIU features are programmed through a standard microprocessor interface, serial interface or controlled through Hardware mode. EXAR’s LIU has patented high impedance circuits that allow the transmitter outputs and receiver inputs to be high impedance when experiencing a power failure or when the LIU is powered off. Key design features within the LIU optimize 1:1 or 1+1 redundancy and non-intrusive monitoring applications to ensure reliability without using relays. The on-chip clock synthesizer generates T1/E1/J1 clock rates from a selectable external clock frequency and outputs a clock reference of the line rate chosen. Additional features include RLOS, a 16-bit LCV counter for each channel, AIS, QRSS generation/ detection, TAOS, DMO, and diagnostic loopback modes. APPLICATIONS • T1 Digital Cross-Connects (DSX-1) • ISDN Primary Rate Interface • CSU/DSU E1/T1/J1 Interface • T1/E1/J1 LAN/WAN Routers • Public switching Systems and PBX Interfaces • T1/E1/J1 Multiplexer and Channel Banks FIGURE 1. BLOCK DIAGRAM OF THE XRT83SH38 T1/E1/J1 LIU (HOST MODE) 1 of 8 channels, CHANNEL_n HW/HOST WR_R/W RD_DS ALE-AS CS RDY_DTACK/SDO INT SER_PAR ICT TPOS_n/TDATA_n TNEG_n/CODES_n TCLK_n RCLK_n RNEG_n/LCV_n RPOS_n/RDATA_n RLOS_n RRING_n MASTER CLOCK SYNTHESIZER QRSS PATTERN GENERATOR DMO_n TTIP_n TRING_n TXON_n HDB3/ B8ZS ENCODER TX/RX JITTER ATTENUATOR TIMING CONTROL TX FILTER & PULSE SHAPER LINE DRIVER DRIVE MONITOR HDB3/ B8ZS DECODER TX/RX JITTER ATTENUATOR TIMING & DATA RECOVERY PEAK DETECTOR & SLICER QRSS DETECTOR AIS DETECTOR LOS DETECTOR µPTS1 µPTS2 D[7:0] µPCLK/SCLK A[7:0]/SDI RESET MICROPROCESSOR/SERIAL INTERFACE CONTROLLER TEST MCLKE1 MCLKT1 MCLKOUT TAOS RTIP_n Remote Loopback Digital Loopback Analog Loopback |
Similar Part No. - XRT83SH38_0609 |
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Similar Description - XRT83SH38_0609 |
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