NOVEMBER 27, 2006 -- Terawave Communications (search for Terawave Communications) and Kawasaki Microelectronics (K-micro) today announced that they have worked together to deliver what they claim is the industry's highest-performing PHY ASIC built specifically for GPON (search for GPON) optical line terminals (OLTs).
The ASIC enables extremely low GPON physical layer overhead by providing fast phase locking to incoming bursts along with the associated hardware hooks to synchronize upstream traffic within a few bits at 1244 Mbits/sec, say representatives from the companies.
"Terawave BM-CDR technology enables full compliance with GPON ITU-T G.984.x Recommendations for burst-mode operation," reports Boris Auerbuch, vice president of engineering and CTO of Terawave Communications. "The new ASIC supports extended temperature range and can be used for both indoor and outdoor applications."
K-micro has integrated its burst-mode clock and data recovery (BM-CDR) technology into this new ASIC. It has appeared in two previous generations: the first-generation "Copper Tub" (CT1) that runs at 1244/1244, and a later CT2 that runs at 2488/1244.
The device supports arbitrarily long bursts without loss of lock and incorporates a variety of advanced features to support such functions as optoelectronics control and synchronization, chatter suppression, and auto-discovery, say the companies. Implementation of this functionality in a pure CMOS process minimizes power dissipation and device cost.
According to Terawave, its TW-800 family of OLTs is the first to incorporate this technology. The TW-801 OLT is one of a series of OLT packages designed to address the emerging GPON global market. These products are completelyIG.984.x ITU standards compliant.
"The partnership of Terawave and K-micro has enabled the development of the highest performing, single-chip PHY in the industry," adds Vijay Pathak, CTO of K-Micro. "Combining the GPON knowledge and engineering capability of Terawave with K-micro's high-performance SERDES and burst-mode CDR has resulted in creating this advanced device."
The Terawave TW-800 OLT family is available now for customer lab trials and will be generally available in Q1 2007. Terawave is a supplier of GPON technology to Fujitsu for British Telecom's 21C Network.