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XRT83VSH38 Datasheet

Part NameDescriptionManufacturer
XRT83VSH38 8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT Exar
Exar Corporation Exar
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GENERAL DESCRIPTION
The XRT83VSH38 is a fully integrated 8-channel short-haul line interface unit (LIU) that operates from a 1.8V and a 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 parallel or serial microprocessor interface.

FEATURES
• Fully integrated eight 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 75Ω (E1), 100Ω (T1), 110Ω (J1), and 120Ω (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 per channel
• User programable Arbitrary Pulse mode
• On-Chip transmit short-circuit protection and limiting protects line drivers from damage on a per channel basis
• Selectable Crystal-Less digital jitter attenuators (JA) with 32-Bit or 64-Bit FIFO for the receive or transmit path
• 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 6dB resistive attenuation (flat loss) along with 0 to 6dB cable loss for both T1 and E1
• Loss of signal (RLOS) according to ITU-T G.775/ETS300233 (E1) and ANSI T1.403 (T1/J1)
• 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/PRBS pattern generator and detection for testing and monitoring
• Error and bipolar violation insertion and detection
• Transmit all ones (TAOS) Generators and Detectors
• Supports local analog, remote, digital, and dual loopback modes
• Supports gapped clocks for mapper/multiplexer applications
• 1.8V Digital Inner Core
• 3.3V I/O Supply and Analog Inner Core
• 225 ball BGA package
• -40°C to +85°C Temperature Range

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

 

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