A routing algorithm for flip-chip design
ICCAD '05 Proceedings of the 2005 IEEE/ACM International conference on Computer-aided design
An integer linear programming based routing algorithm for flip-chip design
Proceedings of the 44th annual Design Automation Conference
Area-I/O flip-chip routing for chip-package co-design
Proceedings of the 2008 IEEE/ACM International Conference on Computer-Aided Design
Flip-chip routing with unified area-I/O pad assignments for package-board co-design
Proceedings of the 46th Annual Design Automation Conference
An integer-linear-programming-based routing algorithm for flip-chip designs
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
An efficient pre-assignment routing algorithm for flip-chip designs
Proceedings of the 2009 International Conference on Computer-Aided Design
Area-I/O flip-chip routing for chip-package co-design considering signal skews
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Recent research development in flip-chip routing
Proceedings of the International Conference on Computer-Aided Design
A Network-Flow-Based RDL Routing Algorithmz for Flip-Chip Design
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
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Due to the advantage of flip-chip design in power distribution but controversial peripheral IO placement in lower design cost, redistribution layer (RDL) is usually used for such interconnection. Sometimes RDL is so congested that the capacity for routing is insufficient. Routing therefore cannot be completed within a single layer even for manual routing. Although [2] proposed a routing algorithm that uses two layers of RDLs, but in practice the required routing area is a little more than one layer. We overcome this problem by adopting the concept of pseudo single-layer. With the heuristics for routing on mapped channels and observations on staggered pins to relieve vertical constraints, the area of 2-layer routing can be minimized and the routability is 100%. Comparisons of routing results between manual design, the commercial tool, and the proposed method are presented. We have shown the effectiveness on a real industrial case: it originally required fully manual design, the proposed method can finish RDL routing automatically and effectively.