Communication packet processor with a look-up engine and content-addressable memory for modifying selectors to retrieve context information for a core processor
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United States of America Patent
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Jan 18, 2005
Grant Date -
Sep 5, 2002
app pub date -
Mar 8, 2001
filing date -
Jun 14, 2000
priority date (Note) -
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Abstract
Packet processing circuitry comprises a processor and a look-up engine. The look-up engine transfers a first selector to a CAM and receives a corresponding first result from the CAM. The look-up engine generates a second selector based on the first result. The look-up engine transfers the second selector to the CAM and receives a corresponding second result from the CAM. The look-up engine retrieves a first context structure based on the second result. The look-up engine builds a summation block using the first context structure and transfers the summation block to the processor. The processor receives and processes the summation block to control handling of the communication packet.
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