On-die receiver coupling capacitance testing
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United States of America Patent
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Dec 8, 2020
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N/A
app pub date -
Oct 31, 2019
filing date -
Oct 31, 2019
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Abstract
A method for testing on-die capacitors is provided. The method comprises transmitting, during a first time period, a first modulated testing signal from a first transmitter port of a transmitter to a first receiver port of a receiver along a first path of a differential signal, the first receiver port connected to a first on-die capacitor in the receiver along the first path; driving, during the first time period, a constant voltage on a second transmitter port of the transmitter to a second receiver port of the receiver along a second path of the differential signal comprising a second on-die capacitor; and determining whether the first on-die capacitor is functional, based on the first modulated testing signal.
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