Exar Corporation XRT83VSH28
The XRT83VSH28 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 XRT83VSH28 E1 LIU (HOST MODE) MCLKE1 MASTER CLOCK SYNTHESIZER MCLKOUT 1 of 8 channels, CHANNEL _n TPOS_n/ TDATA_n TNEG_n/ CODES_n TCLK_n QRSS PATTERN GENERATOR HDB3/ ENCODER TX/ RX JITTER ATTENUATOR TAOS DRIVE MONITOR TX FILTER & PULSE SHAPER LINE DRIVER DMO_n TTIP_n TRING_n...| Part No. | XRT83VSH28 |
|---|---|
| Datasheet | XRT83VSH28 Download |
| Manufacturer |  Exar Corporation |
| Description | 8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT |
| Buy | Stock & Price |
GENERAL DESCRIPTION
Using internal termination, the LIU provides one bill of materials to operate in E1 75Ω or 120Ω 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 an E1 clock reference. Additional features include RLOS, a 16-bit LCV counter for each channel, AIS, QRSS generation/ detection, TAOS, DMO, and diagnostic loopback modes.APPLICATIONS
● ISDN Primary Rate Interface● CSU/DSU E1 Interface
● E1 LAN/WAN Routers
● Public switching Systems and PBX Interfaces
● E1 Multiplexer and Channel Banks FIGURE 1. BLOCK DIAGRAM OF THE XRT83VSH28 E1 LIU (HOST MODE) MCLKE1 MASTER CLOCK SYNTHESIZER MCLKOUT 1 of 8 channels, CHANNE...
