Global Sources
EE Times-India
Stay in touch with EE Times India
EE Times-India > Memory/Storage

TCAM allows low-power, high-speed search

Posted: 16 Dec 2009     Print Version  Bookmark and Share

Keywords:TCAM  ternary content addressable memory  network 


Renesas Technology Corp. has launched a high-performance ternary content addressable memory (TCAM) series, comprising a portfolio of memory products that enable high-speed packet processing for networking equipment such as routers and switches. The first product in the series is the R8A20410BG TCAM, which has a capacity of 20Mbits and delivers high-speed search performance of up to 360MSps/Table.

TCAM is a type of memory in which each memory cell can store three data states: 0, 1, and X ("Don't Care"). It is suitable for applications such as networking equipment because it achieves deterministic, high-speed searches by using simultaneous parallel operation to compare data strings input from an external device with data strings stored in the memory and outputting the matches. As the use of networks, typified by the Internet, has spread widely in recent years, attention has focused on TCAMs as a key device for increasing the speed of packet forwarding (packet data transfers) by networking equipment by enabling high-speed lookup of destinations, etc., for large volumes of information during packet data transfers.

The R8A20410BG delivers high-speed search capability combined with ultra low-power consumption. For example, at a clock frequency of 360 MHz, the search processing performance is 360MSps/Table, the highest level in the industry today. This makes it possible to design communications equipment offering superior performance.

In addition, the memory device offers flexible search conditions to accommodate a broad range of applications. Flexible search conditions allow the search bit length to be set to 40L/H, 80-, 160-, 320-, 480-, or 640bits. In addition, functions such as four-parallel independent search engines significantly increase lookup performance and provide support for a wide range of network applications.

The Renesas R8A20410BG TCAM is designed to seamlessly interwork with network processing units (NPUs). The TCAM are fully interoperable with Xelerated's HX family of high performance network processors. The company is increasing the number of NPUs, which the R8A20410BG interoperates with, to provide a wide range of packet processing.

The R8A20410BG allows expansion up to 40Mbit through cascade connections. The package is a 576-pin FCBGA (flip chip BGA) measuring 27mm x 27mm. Sample shipments will begin in December 2009 in Japan.

Comment on "TCAM allows low-power, high-speed se..."
*  You can enter [0] more charecters.
*Verify code:


Visit Asia Webinars to learn about the latest in technology and get practical design tips.


Go to top             Connect on Facebook      Follow us on Twitter      Follow us on Orkut

Back to Top