Abstract
In 2002, the PCI Special Interest Group (PCI-SIG) announced "base" and "card
electrical mechanical" standards for PCI Express. PCI Express was a welcomed
evolution from the venerated PCI interconnection standard. PCI Express
remained backward compatible with PCI in terms of software and drivers.
However, PCI Express was a serial interconnection, different from PCI, which
had been a point-to-point interconnect.
Products starting to use PCI Express trickled onto the market in 2H03.
Personal computers (PCs) and servers saw early adoption and by 2006, nearly
every PC and server with an x86 architecture had a PCI Express interconnection.
Once an application gets tied to the legacy PCI bus, there is an opportunity
to draw from a vast network of software applications for programming and
drivers. Other standards such as PXI (PCI eXtension for Instrumentation),
CompactPCI, and VITA (VMEbus International Trade Association) are all
extensions of PCI. While the transition from PCI to PCI Express took longer
for PCI-hybrid from factors than in PCs, these specialized boards are
integrating the PCI Express bus.
PCI Express, the Journey to 2.0, catalogs all of the major product
announcements involving PCI Express from May 2006 to December 2006. The report
examines the improvements that allow PCI Express 2.0 to increase frequency
from 2.5GHz to 5GHz. Lastly, a forecast of PCI Express uses by devices and
vertical markets is provided from 2004 2010.
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