Physical Layer Processor suits telecommunications equipment.

Press Release Summary:



Incorporating 1.544 or 2.048 Mb/s T1/E1 framer and line interface unit, single-channel XRT86VL30 is suited for wireless base stations, digital access and cross connect systems, CSUs, and voice over packet gateways. Each framer has both framing synchronizer and transmit and receive slip buffers, as well as transmit and overhead data input ports, which permits data line terminal equipment direct access to out-bound T1/E1/J1 frames. Device's LIU offers uninterrupted data transmission.



Original Press Release:



Exar Adds Next Generation Single-Channel T1/E1/J1 BITS Framer and Line Interface Unit (LIU) Combo to Industry's Most Extensive T/E Portfolio



Low Voltage (1.8V), Highly Integrated, Feature Rich Solution Reduces Design Complexity for OEMs in Dynamic Markets

FREMONT, Calif., July 21 /-- Exar Corporation (NASDAQ:EXAR) adds T1/E1/J1 framer and LIU combination with next generation capabilities and features to the industry's deepest portfolio of T/E solutions. The single-channel XRT86VL30 targets telecommunications equipment including wireless base stations, digital access and cross connect systems, Channel Service Units (CSUs), voice over packet gateways, among others.

"Synchronizing Ethernet has become a design challenge to compensate for jitter while packetizing clock information and due to high costs of implementing GPS," said Darren Pool, senior product line manager, Communications Product Line. "The XRT86VL30 BITS device offers cost effective clock synchronization through an E1 line that can be easily migrated to next generation 3.5G networks."

Product Details

The XRT86VL30 is a single-channel physical-layer processor incorporating a T1/E1 (1.544 Mb/s or 2.048 Mb/s) framer and a LIU. Each framer has both a framing synchronizer and transmit and receive slip buffers. Each framer also contains transmit and overhead data input ports, which permits data line terminal equipment direct access to the out-bound T1/E1/J1 frames. In the receive direction, it has complementary blocks to the transmit path. In addition, the XRT86VL30 includes a PRBS, QRSS and network loop up/down code generator/detector. The device detects standard framing and signal error conditions. The microprocessor interface is very flexible allowing for easy configuration, control, and status monitoring.

The XRT86VL30's line interface portion offers uninterrupted data transmission which is critical for applications including clock and data recovery circuitry, T1 compliant line build out, and a crystalless jitter attenuator for each channel. All of these are necessary for successfully transmitting and receiving T1, E1 and J1 signals.

"Customers who have come to trust the reliable performance and ease-of- design with our earlier eight-channel, four-channel, and dual-channel T1/E1/J1 framer/LIUs sought a single-channel next generation option for their platforms," said Tim Halladay, applications manager, Communications Product Line. "With simultaneous loop code detection for diagnostics, Exar's R3 Technology (TM) (Reconfigurable, Relayless Redundancy), simultaneous processing of up to three HDLC messages, BITS Clock Compliance with Section 13 in G.703, and a fully automated SSM BOC controller, the XRT86VL30 is ideal for operations and management applications where this high level of performance has become an industry standard."

R3 Technology Overview

The XRT86VL30 supports Exar's R3 Technology -- introduced in 2002. Devices using R3 Technology are reconfigurable with integrated termination supporting all common T1/E1/J1 line impedances enabling customers to build a simple board and eliminate the need for external relays for 1:1 and 1+1 redundancy applications. This feature allows final device configuration to be made just prior to line-card installation. This unique capability prevents customers from having to unnecessarily stockpile an inventory of all configurations to accommodate changing market conditions.

Standards Compliance

The device, The XRT86VL30 fully meets all of the latest T1/E1/J1 specifications: ANSI T1/E1.107-1988, ANSI T1/E1.403-1995, ANSI T1/E1.231-1993, ANSI T1/E1.408-1990, AT&T TR 62411 (12-90) TR54016, and ITU G-703, G.704, G706 and G.733, AT&T Pub.43801, and ETS 300 011, 300 233, JT G.703, JTG.704, JT G706, I.431. Extensive test and diagnostic functions include Loop-backs, Boundary scan, Pseudo Random bit sequence (PRBS) test pattern generation, Performance Monitor, Bit Error Rate (BER) meter, forced error insertion, and LAPD unchannelized data payload processing according to ITU-T standard Q.921.

Prices, Packages and Availability

Samples of the XRT86VL30 are available now in a 128-pin LQFP, or 80-pin LQFP package. At 1k volumes the XRT86VL30 is $10.11, and it is a 3.3V, 5V input tolerant device. For additional information on this device please go to www.exar.com/Common/Content/ProductDetails.aspx?ID=8118&ParentID=3. For additional information about Exar's T/E and SONET/SDH portfolio go to http://www.exar.com/Common/Content/Product.aspx?Parent=3&ID=456.

About Exar

Exar Corporation is Powering Connectivity by delivering highly differentiated silicon solutions empowering products to connect. With distinctive knowledge in analog and digital technologies, Exar enables a wide array of applications such as portable devices, home media gateways, communications systems, and industrial automation equipment. Exar has locations worldwide providing real-time system-level support to drive rapid product innovation. For more information about Exar visit: www.exar.com/.

CONTACT: Greg Kaufman, Marketing Communications of Exar Corporation,
+1-510-668-7000

Web site: http://www.exar.com/

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