POWER REDUCTION AND EFFECTIVE TIMING EXCEPTIONS HANDLING IN AT-SPEED CAPTURE
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United States of America
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Issued Date -
Dec 26, 2024
app pub date -
Jun 20, 2023
filing date -
Jun 20, 2023
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Abstract
According to an embodiment, a method for testing a scan chain is provided. The method includes receiving a first clock signal and a first scan enable signal and generating a second and third clock signal based on the first clock signal and the first scan enable signal. The third clock signal is delayed by a clock pulse from the second clock signal. The first, second, and third clock signal have the same duty cycle. The method further includes providing the second clock signal and the second scan enable signal to, respectively, a clock terminal and scan enable input of a first scan flip-flop of the scan chain. The method further includes providing the third clock signal and a third scan enable signal to, respectively, a clock terminal and a scan enable input of a last scan flip-flop of the scan chain.
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