Method and device for the testing of setup - time and hold - time signals of a circuit with a clocked data transmission

摘要

According to the invention, a reference clock signal to a first deceleration path with a fixed delay and a second deceleration path with a variable delay is applied, which in each case with an input of the clocked circuit are connected, in order to trigger a data transmission of the clocked circuit, wherein the variable delay a range of adjustment with n equidistant steps and a basic delay deltat in the range of dollars f1, and t φ f φ corresponds to the fixed delay, the at least n dollar f2, where for calibrating the adjustment range of the variable delay and the fixed delay in each case to the k - times value can be increased, and the variable delay stepwise from n = 0 at is incremented to three phase change can be detected, wherein the value of n to the time of the first phases through gear of the setup - time and the value of n to the point in time of the third phases through gear of the hold - time, corresponds to.