I-BIRAS: Interconnect Built-In Self-Repair and Adaptive Serialization in 3D Integrated Systems

In 3D integrated systems, Thru-Silicon-Vias (TSVs) enable higher performance and energy efficiency, by reducing the data travel distances. However, the TSV manufacturing and wear-out defect rates lead to poor interconnect reliability and yield. The high fault rates and TSV footprint make spare-based repair solutions inefficient. I-BIRAS combines self-repair and adaptive serialization to increase yield and circuit life at the cost of lower throughput. After the interconnect test, the diagnosis vector DV is used to perform the self-repair and adaptive serialization to increase yield and circuit life at the cost of lower throughput. After the interconnect test, the diagnosis vector DV is used to perform the self-repair and adaptive serialization. The design parameters are the number of data bits n, the number of spare TSVs r, and the minimum acceptable number mLIMIT of fault-free TSVs. If the number of fault-free TSVs is less than mLIMIT then the link assumed failed.