Packet combiner for a packetized bus with dynamic holdoff time
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United States of America Patent
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Apr 28, 2009
Grant Date -
Apr 5, 2007
app pub date -
Oct 3, 2006
filing date -
Jul 11, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
Multiple data transfer requests can be merged and transmitted as a single packet on a packetized bus such as a PCI Express (PCI-E) bus. In one embodiment, requests are combined if they are directed to contiguous address ranges in the same target device. An opportunistic merging procedure is advantageously used that merges a first request with a later request if the first request and the later request are mergeable and are received within a holdoff period that is dynamically determined based on a level of bus activity; otherwise, requests can be transmitted without merging.
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