GENERAL DESCRIPTION

The XRT83SL34 is a fully integrated Quad (four channel) short-haul line interface unit for T1 (1.544Mbps) 100Ω, E1 (2.048Mbps) 75Ωor 120Ω, or J1 110Ω applications.

FEATURES

• Fully integrated eight channel short-haul transceivers for E1,T1 or J1 applications

• Programable Transmit Pulse Shaper for E1,T1 or J1 short-haul interfaces

• Five fixed transmit pulse settings for T1 short-haul applications plus a fully programmable waveform

generator for transmit output pulse shaping for both T1 and E1 modes.

• Selectable receiver sensitivity from 0 to 36dB cable loss

• Receive monitor mode handles 0 to 29dB resistive attenuation along with 0 to 6dB of cable attenuation

for E1 and 0 to 3dB of cable attenuation for T1 modes

• Supports 75Ω and 120Ω (E1), 100Ω(T1) and 110Ω (J1) applications

• Internal and/or external impedance matching for 75Ω, 100Ω, 110Ωand 120Ω

• Tri-State transmit output and receive input capability for redundancy applications

• Provides High Impedance for Tx and Rx during power off

• Transmit return loss meets or exceeds ETSI 300-166 standard

• On-chip digital clock recovery circuit for high input jitter tolerance

• Crystal-less digital jitter attenuator with 32-bit or 64-bit FIFO selectable either in transmit or receive path

• On-chip frequency multiplier generates T1 or E1 Master clocks from variety of external clock sources

• High receiver interference immunity

• On-chip transmit short-circuit protection and limiting, and driver fail monitor output (DMO)

• Receive loss of signal (RLOS) output

• On-chip HDB3/B8ZS/AMI encoder/decoder functions

• QRSS pattern generator and detection for testing and monitoring

• Error and Bipolar Violation Insertion and Detection

• Receiver Line Attenuation Indication Output in 1dB steps

• Network Loop-Code Detection for automatic Loop Back Activation/Deactivation

• Transmit All Ones (TAOS) and In-Band Network Loop Up and Down code generators

• Supports Local Analog, Remote, Digital and Dual Loop-Back Modes

• Meets or exceeds T1 and E1 short-haul network access specifications in ITU G.703, G.775, G.736

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