Design for BIT of electronic system based on boundary scan

Boundary scan test is a standard measurability design technology, and it is more convenient for the measurement of complex circuits. Based on the basic principle of boundary scan and one system's CPU board, the boundary scan design and configuration of the system's control circuit are presented and validated. According to the experiments of the designed CPU, the circuit can realize the functions of the boundary scan test and locate faults rapidly. It could efficaciously promote the measurability of the electronic system.