Fremont, Calif. Exar Corp. launched what it claims is the industry's first universal multiprotocol framer for Ethernet-over-Sonet applications.
Exar's EXtendAR 48M (XRT95L53) is a universal OC-48/STM-16 multiprotocol framer that combines flexible Sonet/synchronous digital hierarchy (SDH) framer and DS3/E3 mappers with generic framing procedure (GFP), virtual concatenation (VCAT) and link capacity adjustment scheme (LCAS) functions on a single device.
This is the first in a family of multiprotocol over Sonet/SDH framers that will extend Exar into next-generation Metro core and transport network markets, said Bahram Ghaderi, vice president and general manager of Exar's Networking and Transmission Products Division. "Deployments of these highly integrated devices are enabling the convergence of triple-play services together with data over Sonet/SDH," he said.
The device employs a unique set of flexible packet framing and encapsulation features combined with optimal Sonet transport capabilities. This makes EXtendAR 48M a practical solution for legacy systems as well as add/drop multiplexers, optical edge devices (OED's), multiservice provisioning platforms and edge router applications, Ghaderi said.
EXtendAR 48M supports GFP in combination with virtual concatenation (high order and low order) and LCAS, as well as a comprehensive suite of framing functions, which are configurable on a per channel basis.
In addition, EXtendAR 48M is the industry's first device to incorporate 48 DS3/E3 and fractional DS3/E3 framers on a single chip, Ghaderi said. "With this unprecedented level of integration of legacy and multiprotocol over Sonet/SDH framing functions in a single device, system vendors no longer have to implement them elsewhere in the system," he said.
EXtendAR 48M, in addition to the Sonet interfaces, supports an OIF compliant SPI-3 interface enabling the device to interface directly to industry standard network processors, Ethernet switches or RPR MAC's. The device also supports Exar's G-header interface that provides framing and encapsulation support for Fast Ethernet, Gigabit Ethernet, RPR, MPLS or proprietary client data to be transported over Sonet.
EXtendAR 48M maps and de-maps data traffic between the SPI-3 interface and the standard Sonet/SDH interfaces. The device supports STS-48/STM-16 interfaces, as well as four STS-12/STS-3 interfaces on the Sonet/SDH line side and a standard OIF compliant SPI-3 interface on the system side. The device supports a flexible on-chip 4-bit serdes interface that can be configured in either STS-48 or a quad STS-12/STS-3 mode.
The device supports the mappings for any standard combination of STS-48/AU4-16, STS-12c/AU-4c or STS-3c/AU4 or STS-1/AU3, as well as STS-1/VC-3-xV or STS-3c/VC-4- xV. Also, the device provides pointer processing to accommodate timing offsets between optical interfaces. The device terminates section overhead and line overhead on OC-48/STM-16, 4xOC-12/, 16xOC-3 interfaces, and supports options to terminate and/or monitor STS path overhead (POH) and transport overhead (TOH).
A standard 16-bit microprocessor interface provides performance monitoring and alarms required by GR.253 and ANSI T1.105 and supports tandem path monitoring for network failure sectionalization.
The XRT95L53 operates at 3.3-V with 5-V tolerant I/Os over the industrial temperature range, and is available in a 780 PBGA. Samples of the part will be available within 60 days.
In 1,000 piece quantities, the XRT95L53 is priced at $695. Click here for the XRT95L53 data sheet.
Exar, 1-510-668-7000, www.Exar.com.