PCIe Devices - PLX Technology
PCIe Devices - PLX Technology
PCIe Devices - PLX Technology
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<strong>PCIe</strong> Compatibility and New Features<br />
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<strong>PCIe</strong> is backwards compatible at the binary level<br />
with PCI and PCI-X<br />
l<br />
Configuration space, commands, and device access are<br />
indistinguishable<br />
– <strong>PCIe</strong> adds a mandatory new register set and several optional<br />
register sets<br />
• Provides foundation for most of <strong>PCIe</strong> new features<br />
n<br />
<strong>PCIe</strong> hardware interconnect is entirely new<br />
l<br />
l<br />
High speed serial interconnect<br />
– Can be striped providing speed enhancements (scaling)<br />
• Signaling enhancements are planned<br />
Introduces a three layer protocol stack<br />
– Provides end-to-end, point-to-point, and electrical service<br />
• Protocol stack mostly built in hardware and silicon<br />
Copyright by Dashcourses, Inc. 2009<br />
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