An Application of Boundary-scan in Testing Digital Circuit Board with DSP Chips

A method integrating boundary scan and traditional vector inputting technique is introduced to test the non-boundary-scan devices in digital circuit board with DSP chips in the paper.The results of function tests to such device indicate that faults can be effectively detected and isolated to chip level using this method.The results prove that using the method integrating boundary scan and traditional vector inputting technique can effectively solve the problems of function test of partial non-boundary-scan devices in PCB with DSP chips.