Exar Corporation XRT83VSH38
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. The LIU features are programmed through a standard parallel or serial microprocessor interface. BLOCK DIAGRAM OF THE XRT83VSH38 T1/E1/J1 LIU (HOST MODE) MCLKE1 MCLKT1 MASTER CLOCK SYNTHESIZER MCLKOUT 1 of 8 channels, CHANNEL_n TPOS_n/TDATA_n TNEG_n/CODES_n TCLK_n QRSS PATTERN GENERATOR HDB3/ B8ZS ENCODER TX/RX JITTER ATTENUATOR TAOS TX FILTER & PULSE SHAPER DRIVE MONITOR LINE DRIVER DMO_n...| Part No. | XRT83VSH38 |
|---|---|
| Datasheet | XRT83VSH38 Download |
| Manufacturer |  Exar Corporation |
| Description | 8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT |
| Buy | Stock & Price |
GENERAL DESCRIPTION
Using internal termination, the LIU provides one bill of materials to operate in T1, E1, or J1 mode with minimum external components. 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 include RLOS, a 16-bit LCV counter for each channel, AIS, QRSS generation/ detection, TAOS, DMO, and diagnostic loopback modes.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 FIGURE 1.
