A Cost-Effective Scheme for Network-on-Chip Router and Interconnect Testing

3-D technology for networks-on-chip (NoCs) becomes attractive. It is important to present an effective scheme for 3-D stacked NoC router and interconnect testing. A new approach to testing of NoC routers is proposed by classifying the routers. Routers with different input/output ports fall into different classes. Routers of the same class are identical, whose tests are the same. A new unicast-based multicast scheme is proposed for the identical routers. A new test application scheme is proposed for interconnect testing. Sufficient experimental results are presented.