Infineon Expands Industry-Leading Portfolio of Networking Solutions with High-Integration, Multi-Channel Tethys™ SONET/SDH Framer Chip Family
The single-chip Tethys devices integrate functions previously requiring up to five separate components, including aggregation of up to 16 channels of traffic, serializing/deserializing, pointer processing, clock and data recovery, section, transport overhead (TOH) and path overhead (POH) processing. This is the highest degree of integration of any SONET/SDH framer chip in its class, effectively creating the first high-density line card on a chip. Use of the Tethys framers can result in significant savings for manufacturers of line cards for trunk, tributary and service applications in terms of power consumption, board design complexity and space, software development, and overall system cost.
The first two members of the new framer family, the Tethys 448 and Tethys 4192, support high-density aggregate throughputs while meeting the most stringent SONET/SDH jitter requirements. The Tethys 448 fully supports 16 channels of OC-3/STM-1, 16 channels of OC-12/STM-4, or 16 channels of OC-48/STM-16, which can be mixed in any required combination. In addition to the Tethys 448 capabilities, the Tethys 4192 adds support for four channels of OC-192/STM-64.
The Tethys chips are another milestone on our road to delivering the fullest portfolio of standards-based solutions to the broad optical networking market, said Subodh Toprani, Senior Vice President, Infineon Technologies, and General Manager, Infineon North America Communications Business Group. They meet a huge need in the market, where more than 70 percent of SONET/SDH networks involve pure TDM applications. Together with our other solutions, such multi-rate and highly programmable devices as the Tethys family enable our customers to offer products with higher bandwidth and functionality in their road maps with a single design.
The Tethys framers provide unsurpassed flexibility by allowing every port to be independently set for a different data rate, permitting any port, any rate configuration, and by providing a direct interface to optical modules. This enables equipment to be programmed in the field by simply changing the optical modules. This capability allows service providers to purchase one card for use in multiple applications, substantially reducing maintenance costs, in-service upgrades and inventory.
"Service providers are constantly looking for ways to reduce the cost of new network builds. To reduce R&D and production costs, system vendors are now replacing legacy framer ASICs with newer standard products," said Allan Armstrong, Program Director at telecommunications industry analyst firm RHK. "Unified framer solutions that support a variety of data rates with a common hardware and software architecture allow system vendors to leverage their engineering efforts, greatly cutting costs for new platforms. Improvements in integration also help system vendors make denser line cards, which makes their products more competitive in both edge and core applications."
Infineon Tethys Multi-Rate Framer Features
The Tethys Multi-Rate SONET/DSH Framer chips are highly integrated devices that implement full-duplex SONET/SDH processing at OC-3/STM-1, OC-12/STM-4, OC-48/STM-16 or OC-192/STM-64 data rates. Included in the functions they perform are section, line and path overhead processing, framing, scrambling/descrambling, alarm signal insertion/detection, bit-interleaved parity (B1/B2/B3) processing, and pointer processing. In addition, they feature a unique hardware Forced Input Path (FIP) capability that allows an entire path to be overwritten directly in alarm conditions, eliminating the need to involve the CPU and switch matrix.
Alarm drop interfaces detect such conditions as loss of signal (LOS) and loss of frame (LOF), and enable the FIP function together with the POH handling.
Unlike other framer chips, which typically offer access to TOH only, the Tethys architecture allows both TOH and POH bytes to be extracted from and re-inserted into the receive and transmit paths, making all overhead bytes available for additional processing.
On-chip serializer/deserializer (SERDES), clock and data recovery (CDR) and clock multiplier unit (CMU) functions support 2.5 Gbps, 622 Mbps and 155 Mbps multi-rate I/Os. Based on three previous generations of silicon, the Tethys framers support 32 CDRs on a single chip while still meeting the strictest SONET/SDH jitter requirements, including tolerance, transfer and generation.
The line-side interfaces for the Tethys 448 framer are programmable serial ports.The Tethys 4192 chip has the additional interfaces, SFI-4.1 and SFI-4.2, required for the OC-192/STM-64 mode. The system-side interface for both devices supports TFI-5. The SFI-4.1, SFI-4.2 and TFI-5 interfaces are OIF-compliant. The selection and configuration of the line- and system-side interfaces are completely independent.
Packaging, Price and Availability
The Tethys 448 and Tethys 4192 framer chips will be offered in 1400-contact ball grid array (BGA) packages. Samples of both chips will be available in the third quarter of 2003, with volume production planned for later in the year. The Tethys 448, supporting up to 16 channels of OC-48 data, will be priced at $1,450 in sample quantities. The Tethys 4192, supporting up to four channels of OC-192 data, will be priced at $1,750 in sample quantities.
Additional information on the Tethys SONET/SDH Multi-Rate Framer family is available at www.infineon.com.
Infineon Technologies AG, Munich, Germany, offers semiconductor and system solutions for the automotive and industrial sectors, for applications in the wired communications markets, secure mobile solutions as well as memory products. With a global presence, Infineon operates in the US from San Jose, CA, in the Asia-Pacific region from Singapore and in Japan from Tokyo. In fiscal year 2002 (ending September), the company achieved sales of Euro 5.21 billion with about 30,400 employees worldwide. Infineon is listed on the DAX index of the Frankfurt Stock Exchange and on the New York Stock Exchange (ticker symbol: IFX). Further information is available at http://www.infineon.com
The first two members of the new framer family, the Tethys 448 and Tethys 4192, support high-density aggregate throughputs while meeting the most stringent SONET/SDH jitter requirements. The Tethys 448 fully supports 16 channels of OC-3/STM-1, 16 channels of OC-12/STM-4, or 16 channels of OC-48/STM-16, which can be mixed in any required combination.Tethys 448
JPG | 415 kb | 1535 x 1063 pxTethys 448
JPG | 8 kb | 160 x 111 px