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Optical Line Terminal SoC cuts power up to 50%

Posted: 11 Nov 2011     Print Version  Bookmark and Share

Keywords:optical  SoC  broadband services 

Broadcom Corp. announces the BCM55524 Quad Port Ethernet Passive Optical Network (EPON) Optical Line Terminal (OLT) SoC that offers low-cost delivery of high speed broadband services on a single fibre infrastructure.

With unparalleled integration, the BCM55524 SoC combines the functionality of up to seven application-specific standard parts (ASSPs) and eliminates seven on-board memory devices, claiming to reduce system costs by up to 50 per cent. Optimised to meet the bandwidth, scalability, and performance demands of next-generation broadband access networks serving both business and residential subscribers, the BCM55524 claims to deliver twice the density and half the power per port of its predecessor, the TK3723, EPON OLT SoC.

As the popularity of social networking, video on demand (VoD), and high bandwidth business services continue to climb, subscriber demand for higher-speed access networks is growing. Competitive pressures are upping the broadband ante—driving Telco and cable providers to develop solutions that leverage existing networks and subscriber base to create profitable and differentiated services. Governments worldwide are making broadband a strategic initiative, investing in fibre technologies such as fibre to the home/business (FTTx). Analysts predict the number of worldwide FTTx subscribers to reach nearly one third of global wireline broadband subscriptions by 2016, driven largely by FTTx deployments in Asia.

The BCM55524 quad OLT is designed to work in tandem with Broadcom's award-winning StrataXGS aggregation switch series, combining feature-rich EPON and proven Carrier Ethernet performance in an end-to-end solution that meets the scalability, reliability, cost, and advanced feature set requirements of next generation FTTx deployments. Backward compatibility with the TK3723 OLT allows system designers to leverage stable OLT software that has undergone extensive carrier qualification and interoperability (IOP) testing, thus offering a risk-free migration path for OEMs to higher density 16-port line card designs, while significantly reducing time-to-market and development costs.

Market drivers include exponential growth in bandwidth demand driving FTTx deployments; reduction in copper infrastructure and transition to fibre; with >25 per cent CAGR by 2016, FTTx represents the fast growing broadband technology; 50 per cent of all wireline broadband subscribers in Asia will be FTTx by 2016 and worldwide IP traffic per capita will reach 15GB in 2015 (from 3GB in 2010).

The BCM55524 SoC features four IEEE 802.3ah-compliant EPON MACs with Broadcom Turbo-EPON support. It allows integration of four 1.25Gbps/2.5Gbps Burst-mode SerDes and four NNI-side SGMII SerDes.

The BCM55524 SoC is IPTV-ready supporting IP Multicast protocols with IPv4 and IPv6 support. It enables full line-rate Layer 2/3/4 filtering and packet processing with comprehensive rule-based classification and supports Broadcom's DOCSIS Mediation Layer.

The BCM55524 SoC is compatible with IEEE 802.3ah EPON, China CTC 2.1, and CableLabs DPOE specifications.

The BCM55524 is now sampling with production volume slated for the first half of 2012.

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