XRT83SL314ES

Product Summary

The XRT83SL314 is a fully integrated 14-channelshort-haul line interface unit (LIU) that operates froma single 3.3V power supply.termination, the LIU provides one bill of materials tooperate in T1, E1, or J1 mode independently on a perchannel basis with minimum external components.The LIU features are programmed through a standardmicroprocessor interface. EXAR’s LIU has patentedhigh impedance circuits that allow the transmitteroutputs and receiver inputs to be high impedancewhen experiencing a power failure or when the LIU ispowered off.Key design features within the LIUoptimize 1:1 or 1+1 redundancy and non-intrusivemonitoring applications to ensure reliability withoutusing relays.

Parametrics

Specifications of XRT83SL314ES
Product Category LIN Transceivers Rohs yes

Features

FEATURES ? Fully integrated 14-Channel short haul transceivers for T1/J1 (1.544MHz) and E1 (2.048MHz) applications. ? T1/E1/J1 short haul and clock rate are per port selectable through software without changing components. ? Internal Impedance matching on both receive and transmit for 75? (E1), 100? (T1), 110? (J1), and 120? (E1) applications are per port selectable through software without changing components. ? Power down on a per channel basis with independent receive and transmit selection. ? Five pre-programmed transmit pulse settings for T1 short haul applications. ? Arbitrary Pulse Generators for both T1 and E1 modes. ? On-Chip transmit short-circuit protection and limiting protects line drivers from damage on a per channel basis. ? Independent Crystal-Less digital jitter attenuators (JA) with 32-Bit or 64-Bit FIFO for the receive and transmit paths ? On-Chip frequency multiplier generates T1 or E1 master clocks from a variety of external clock sources (8, 16, 56, 64, 128, 256kHz and 1X, 2X, 4X, 8X T1 or E1) ? Driver failure monitor output (DMO) alerts of possible system or external component problems. ? Transmit outputs and receive inputs may be "High" impedance for protection or redundancy applications on a per channel basis. ? Support for automatic protection switching. ? 1:1 and 1+1 protection without relays. ? Receive monitor mode handles 0 to 29dB resistive attenuation (flat loss) along with 0 to 6dB cable loss for both T1 and E1. ? Receiver line attenuation indication output in 1dB steps. ? Loss of signal (RLOS) according to ITU-T G.775/ ETS300233 (E1) and ANSI T1.403 (T1/J1). ? Programmable receive slicer threshold (45%, 50%, 55%, or 68%) for improved receiver interference immunity. ? Programmable data stream muting upon RLOS detection. ? On-Chip HDB3/B8ZS encoder/decoder with an internal 16-bit LCV counter for each channel. ? On-Chip digital clock recovery circuit for high input jitter tolerance. ? QRSS pattern generator and detection for testing and monitoring. ? Error and bipolar violation insertion and detection. ? Transmit all ones (TAOS) and in-band network loop up and loop down code generation. ? Automatic loop code detection for remote loopback activation. ? Supports local analog, remote, digital, and dual loopback modes. ? Low Power dissipation: 170mW per channel (50% density). ? 250mW per channel maximum power dissipation (100% density). ? Single 3.3V supply operation (3V to 5V I/O tolerant). ? 304-Pin TBGA package ? -40°C to +85°C Temperature Range ? Supports gapped clocks for mapper/multiplexer applications.

Diagrams