8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
XRT83VSH38
8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
DECEMBER 2017
REV. 1.2.0
GENERAL DESCRIPTION
The XRT83VS...
Description
XRT83VSH38
8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
DECEMBER 2017
REV. 1.2.0
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. EXAR’s LIU has patented high impedance circuits that allow the transmitter outputs and receiver inputs to be high impedance when experiencing a power failure or when the LIU is powered off. Key design features within the LIU optimize 1:1 or 1+1 redundancy and non-intrusive monitoring applications to ensure reliability without using relays.
The on-chip clock synthesizer generates T1/E1/J1 clock rates from a selectable external clock frequency and outputs a clock reference of the line rate chosen. Additional features in...
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