Packet Routing Based on Packet Type in Peripheral Component Interconnect Express Bus Systems
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United States of America Patent
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Issued Date -
Dec 18, 2014
app pub date -
Jun 14, 2013
filing date -
Jun 14, 2013
priority date (Note) -
Abandoned
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Abstract
A PCIe subsystem may be coupled to a host by a system extender adapted to perform PCIe packet routing based on packet type. A first TLP (transport layer packet) type router may receive PCIe packets, and selectively route the PCIe packets according to the type of the packet through a corresponding path of at least two alternate paths. A second TLP type router may receive the routed packet through a first path if the PCIe packet was routed through the first path, and may receive the routed packet through a second path if the routed packet was routed through the second path. A non transparent bridge may be coupled between the first TLP type router block and the second TLP type router block along the second path, while the first path may be a pass-through path from the first TLP type router block to the second TLP type router block.
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