GENERAL DESCRIPTION
The XRT83VSH316 is a fully integrated 16-channel short-haul line interface unit (LIU) that operates from a 1.8V Inner Core and 3.3V I/O power supplies. Using internal termination, the LIU provides one bill of materials to operate in T1, E1, or J1 mode independently on a per channel basis with minimum external components. The LIU features are programmed through a standard parallel microprocessor interface or SPI (Serial Mode).

FEATURES
• Fully integrated 16-Channel short haul transceivers for T1/J1 (1.544MHz) and E1 (2.048MHz) applications
• Parallel or SPI Microprocessor Interface
• 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 per channel
• User programable Arbitrary Pulse mode for T1 and E1
• On-Chip transmit short-circuit protection and limiting protects line drivers from damage on a per channel basis
• Crystal-Less digital jitter attenuators (JA) with 32-Bit or 64-Bit FIFO for the receive or transmit path per channel
• 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 (LOS) according to ITU-T G.775/ETS300233 (E1) and ANSI T1.403 (T1/J1) for system (SLOS) and line (RLOS) side diagnostics
• 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 for system (SPRBS) and line (PRBS) side diagnostics
• Error and bipolar violation insertion and detection

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
• Integrated Multi-Service Access Platforms (IMAPs)
• Integrated Access Devices (IADs)
• Inverse Multiplexing for ATM (IMA)
• Wireless Base Stations