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RapidIO与先进交换互连(ASI)和PCI-Express的比较 [英]

2004年03月04日 ?? 收藏0

作为高速串行互连技术和标准,RapidIO和ASI(PCI-Express)是竞争对手。此文虽是一家之言,但有参考价值。

Advanced Switching Interconnect - a Critical Review

Design engineers face a multitude of choices in interconnect technology. This paper compares the technical merits of the RapidIO standard and the Advanced Switching Interconnect for use in embedded, high availability networking and communications applications.

History
The ASI standards work was born out of the Arapahoe Work Group effort on PCI-Express. It was recognized early on that PCI

-Express would not adequately meet the needs of communications applications. In fact, some of the backward compatibility constraints imposed by the PCI legacy would make meeting those needs fundamentally incompatible with PCI. What was needed was a new standard that was not encumbered by PCI legacy. This work started in the Arapahoe Work Group at approximately the same time as the work on PCI-Express.

The public has, in some cases, been lead to believe that PCI Express and ASI are the same. If the technologies were indeed the same, then the board of directors of the PCI-SIG would have openly embraced ASI technology. As it stands, ASI was rejected as a PCI technology and forced to form a new and legally separate SIG to govern its evolution.



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RapidIO? 先进交换互连? PCI-Express?

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