Interleaved access to address table in network switching system
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United States of America Patent
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-
Nov 12, 2002
Grant Date -
N/A
app pub date -
May 5, 1999
filing date -
May 5, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A novel method of providing interleaved access to an address lookup table in a multiport communication system having a decision making engine for controlling data switching between receive and transmit ports. A source address (SA) lookup logic circuit and a destination address (DA) connected in a pipeline are enabled to alternately access the address table. An arbitration circuit provides the SA and DA logic circuits with automatic access to the address table in alternate time slots allocated to these logic circuits. Also, the arbitration circuit enables an aging circuit and a host processor to periodically access the address table in pre-selected time slots.
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