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