| 摘要 |
Provided in the present invention is a reconfiguration method and device for scan chains with the planned unit taken into consideration, wherein said reconfiguration method of the scan chains comprises a first phase reconfiguration and second phase reconfiguration. Said first phase reconfiguration first classifies a number of scan chains, wherein scan chains with the starting point and the ending point in the same planned unit are classified as a first aggregation of scan chains; scan chains with the starting point and the ending point not in the same planned unit are classified as a second aggregation of scan chains; and scan chains with both the starting point and the ending point at the same top level are classified as a third aggregation of scan chains. Then, in sequence the scan chains within said first aggregation of scan chains are reconfigured, then the scan chains within said second aggregation of scan chains are reconfigured, and finally the scan chains within said third aggregation of scan chains are reconfigured. Starting from a situation taken as a whole, the present invention of the reconfiguration method and device for scan chains takes into consideration the information of the positions of the starting and ending points of the scan chain, so that it can go through as few planned units as possible, thus reducing by a large margin ports on the planned units and the connection wires between planned units, and reducing the demand for resources and the difficulty in the subsequent design. |
