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IDT rolls 10Gbps RapidIO serial buffer

Posted: 01 Jan 2007 ?? ?Print Version ?Bookmark and Share

Keywords:RapidIO? serial buffer? Pre-Processing Switch? data sample processing? parallel DSP?

Integrated Device Technology Inc. (IDT) has designed its 18Mbit serial buffer as a RapidIO-specific memory to be used in 10Gbps networks, primarily for advanced mobile video services in wireless-infrastructure applications. The 10Gbps Serial Buffer interfaces directly with IDT's Pre-Processing Switch to speed the execution of real-time consecutive data sample processing in base stations and similar infrastructure equipment.

The buffer requires only 16 I/O ports, compared with dozens in some parallel-DSP-based applications. In base stations, multimedia applications require the comparison of previous data samples with current data samples, using real-time processing algorithms. The serial buffer provides the in-line storage capacity to handle such processing without parallelizing data paths, IDT said. In third-generation systems, for example, this makes it possible to conduct random-access and data-channel decoding without delays.

A single 18Mbit memory can be expanded to total system buffer memory of 90Mbits by linking to 72Mbits of external quad data rate SRAM. The buffer includes monitoring and control circuitry to watch for dropped data samples. The buffer can eliminate the need for parallel DSPs, a large local memory that serves as a buffer for other memories or a dedicated FPGA/DSP that stores data locally. Thus, a single serial buffer can slash the BOM for a base station.

Michael Olsen, product manager for flow-control management at IDT, said that any real-time application using Serial RapidIO, including radar, electronic warfare, medical imaging and very-high-speed communications, can benefit from the buffer, though wireless applications may dominate in the near term. The real-time world currently is currently dominated by Serial RapidIO, though Olsen said IDT is considering alternative high-speed serial interfaces as well as additional densities of the serial buffer to add to the family.

10G serial buffer can reduce base-station BOM and links to IDT's preprocessing switch.

The 10Gbps Serial Buffer is packaged in an RoHS-compliant 484-lead BGA, and is priced at $89 each in quantities of 10,000. IDT will also offer an Advanced Mezzanine Card evaluation board that plugs into an Advanced Telecom Computing Architecture main board.

- Loring Wirbel
EE Times

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