Methods and apparatuses including an adjustable termination impedance ratio
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United States of America Patent
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Oct 29, 2013
Grant Date -
Apr 25, 2013
app pub date -
Oct 25, 2011
filing date -
Oct 25, 2011
priority date (Note) -
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Abstract
Methods of adjusting a centerline voltage of a data signal are described, along with apparatuses to adjust the centerline voltage. In one such method, portions of a termination circuit coupled to a node are selectively programmed to adjust an impedance of the termination circuit to adjust the centerline voltage of the data signal driven to the node. One such apparatus includes pull-up impedances and pull-down impedances that can be programmed to adjust the centerline voltage of the data signal. Additional embodiments are also described.
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