Serial buffer to support request packets with out of order response packets
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United States of America Patent
Stats
-
Nov 13, 2012
Grant Date -
Sep 10, 2009
app pub date -
Mar 6, 2008
filing date -
Mar 6, 2008
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Within a serial buffer, request packets are written to available memory blocks of a memory buffer, which are identified by a free buffer pointer list. When a request packet is written to a memory block, the memory block is removed from the free buffer pointer list, and added to a used buffer pointer list. Memory blocks in the used buffer pointer list are read, thereby transmitting the associated request packets from the serial buffer. When a request packet is read from a memory block, the memory block is removed from the used buffer pointer list and added to a request buffer pointer list. If a corresponding response packet is received within a timeout period, the memory block is transferred from the request buffer pointer list to the free buffer pointer list. Otherwise, the memory block is transferred from the request buffer pointer list to the used buffer pointer list.
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