Crosstalk usually has two effects on the circuit, one is performance, the other is function. Because crosstalk will cause the circuit to violate the constraints of setup time and hold time, it will affect the timing of the circuit, resulting in phenomena such as bit errors, resulting in performance degradation. In addition, large spikes generated by crosstalk may cause circuit malfunctions. When the noise changes in the same direction as the signal, the signal may change faster, resulting in a violation of the hold time constraint; when the noise and the signal change in the opposite direction, the signal may slow down, resulting in a violation of the settling time constraints. And if there is a pulse with a sufficiently wide duration and a sufficiently large amplitude due to the influence of noise, it may lead to the malfunction of the circuit. Therefore, if the crosstalk exceeds a certain value, the circuit may malfunction and the system will not work properly.