Apparatus and method for dynamic on-die termination in an open-drain bus architecture system
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United States of America Patent
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Jun 25, 2002
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N/A
app pub date -
Oct 27, 2000
filing date -
Oct 27, 2000
priority date (Note) -
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Abstract
In a system, such as an open-drain bus architecture system, a termination impedance can be dynamically coupled or de-coupled from a bus. The termination impedance is coupled to the bus by a dynamic control circuit if a signal is being received from the bus or if a binary 1 is driven on the bus. The termination impedance is de-coupled from the bus by the dynamic control circuit if a binary 0 is driven on the bus. Coupling the termination impedance to the bus improves signal quality by providing a matching impedance. De-coupling the termination impedance reduces power dissipation and improves receiver noise margin.
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