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Dual-CPU network processors deliver 800MIPS

Posted: 10 Aug 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Gemini? dual-CPU network processors? StorLink?

The Gemini family of dual-CPU network processors from StorLink Semiconductors Inc. delivers up to 800MIPS. With that throughput and its multiple integrated functions, the line lets designers craft systems that can manage the high-speed data and video now streaming through fiber connections into homes and businesses, StorLink said.

Based on dual ARM9 32bit RISC processor cores, the SL3518 packs dual gigabit Ethernet media access controllers, a TCP/IP offload engine, a 128bit encryption engine, dual integrated drive electronics, serial ATA storage interfaces and a hardware RAID engine that supports RAID5.

Taking aim at applications such as Internet Protocol STBs, VOIP gateways, media servers with RAID, networked-attached storage systems and gigabit router gateways, the chips reduce system complexity to just a few logic chips and memory, said Douglas Cheung, VP of marketing and sales.

The dual-CPU architecture maximizes system throughput while offering designers flexibility for application software development, Cheung said. StorLink provides a software suite that includes a fully functional stack running on the first CPU and a small-footprint real-time operating system running on the second CPU.

Code platform
Also able to run on the second CPU are an interprocessor communications layer and a complete development platform for code development and integration.

The hardwired NetEngine protocol accelerator speeds the processing of network address translations; QoS management; IPv4 and IPv6 routing and forwarding; deep packet parsing; and filtering, segmentation and TCP/IP off- load. The dual 10/100/1000 Ethernet controllers let system integrators configure a traditional NAS server system with one or two Ethernet channels, or a NAS server plus router gateway capabilities using one WAN port and one LAN port.

The Layer 2-4 hardware switching and Layer 2-7 packet classification on chip enable high-end router/gateway designs, according to StorLink.

Able to deliver up to 600/200 Mbps running DES/3DES algorithms or 237/197/169 Mbps executing 128/192/256bit AES algorithms, the security acceleration engine keeps data moving rapidly through the chip, StorLink said.

- Dave Bursky
EE Times

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