Patent ID: 6647538
Filing Date: 2003-11-11
Classification: G01R

Abstract:
An apparatus for measuring a signal skew between two on-chip signals, comprising:first means for identifying a transmission of a first signal; second means for identifying a transmission of a second signal; and third means for generating a pulse train based on the identification of the transmission of the first signal and the transmission of the second signal, wherein the pulse train represents a signal skew the first signal and the second signal, wherein the means for identifying a transmission of the first signal includes a first comparator having a clock signal and a reference voltage as inputs and generating a first output signal based on a comparison of the clock signal with the reference voltage, the means for identifying the transmission of the second signal includes a second comparator having a reference output signal and an output signal from a circuit component as inputs and generating a second output signal based on a comparison of the reference output signal with the output signal from the circuit component, and wherein the third means generates the pulse train based on the first output signal and the second output signal.