HyperTransport versione 3

[Staff]

<p>HyperTransport Consortium ha reso pubblica le specifiche della nuova versione, la terza, della tecnologia HyperTransport utilizzata da AMD per i processori Athlon 64bit e Opteron.</p>
<p>Il bus passarà da 1.4GHz del HyperTransport 2.0 a 1.8GHz, 2.0GHz, 2.4GHz e 2.6GHz, mentre per quanto riguarda la bandwidth si ha un incremento dell'86% rispetto all'HyperTransport 2.0, arrivando fino a 41.6GB/s</p>
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<p><strong>Technical Features and Benefits of HyperTransport 3.0</strong></p>
<ul>
<li><em> AC mode (Optional) – An innovative AC interconnect mode complements HyperTransport’s
traditional DC mode, featuring capacitor coupling, AC/DC auto-sensing and auto-configuring
capabilities. The feature extends HyperTransport’s maximum signal transmission distance to
1 meter at maximum specified clock speed with no signal transmission or performance
degradation. As a result, the HyperTransport standard can now support long-haul signal transmission typical of backplane and chassis-to-chassis applications. During power-up and in total transparency to system software, HyperTransport 3.0 auto-senses the presence of
coupling capacitors (AC) and/or direct connections (DC) within the HyperTransport
interconnect fabric and automatically configures each portion of it accordingly.<br />
</em></li>
<li><em>Hot plugging – HyperTransport technology-enabled devices can be added to or removed
from the HyperTransport fabric without disrupting system operations. HyperTransport cards, systems and subsystems can therefore be deployed in backplane and any mission-critical platforms requiring high system availability.</em></li>
<li><em> Un-ganging mode (Optional) – During system power-up and transparently to system
software, 1x16 HyperTransport links can optionally be configured as 2x8 virtual links. This
gives system architects extended interconnect flexibility and the ability to fully leverage existing HyperTransport components and cores. Un-ganging mode is particularly valuable in multiprocessor and symmetric multiprocessing environments.</em></li>
<li><em> Power Management Mode – HyperTransport 3.0 carries dynamic, auto-sensing, hardwarebased,
self-configuring power management capabilities that give end products the
intelligence to best optimize the power consumption of each of their HyperTransport components and modules in real-time and transparently to operating system (OS) and application software.</em></li>
</ul></td>
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