Programmable IO architecture
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United States of America Patent
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Jul 5, 2011
Grant Date -
Aug 20, 2009
app pub date -
Feb 12, 2009
filing date -
Feb 15, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A buffer device coupled to at least one input/output port of an integrated circuit has a plurality of control inputs configured to receive configuration programming information. The at least one input/output circuit is capable of: (a) being configured in a directional sense of communication by the configuration programming information, (b) being configured as an input circuit which can be further configured to provide input logic switching level thresholds according to the configuration programming information, and (c) being configured as at least one output circuit which can be further configured to provide an output drive strength according to the configuration programming information.
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