Exar has extended its innovative, and industry-proven R3 Technology to E1 applications with the release of the XRT83SL28. This highly integrated short-haul LIU device is targeted at multiservice provisioning platforms (MSPPs), access devices, media gateways, routers, and frame relay access devices.
Exar's R3 Technology (reconfigurable, relayless redundancy), first introduced in 2002 as a breakthrough capability delivering key benefits to customers designing interface cards has now been extended to the E1 environment.
The device meets or exceeds popular networking specifications ITU G.703, G.775, ANSI T1.402. and the Bellcore GR-499 core. High-impedance circuits enable transmitter outputs and receiver inputs to achieve high impedance when there is a power failure, or the LIU is turned off. The device also supports automatic protection switching, local analog, remote and digital loopback modes, has on-chip HDB3 encoder/decoder for each channel, and on-chip digital clock recovery circuit with high input jitter tolerance.
Other features include a parallel microprocessor bus supporting both synchronous and asynchronous microprocessor interfaces for Motorola, Intel and MIPS processors.
For more information contact Kobus van Rooyen, ASIC Design Services, 011 315 8316, [email protected]
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