Datapath layout generation with in-the-cell routing and optimal column resequencing

The authors describe a new layout style for datapath circuits. Novel features of their datapath layout style are the use of a routing channel inside the bitslice cells and leaving the designer full freedom to define the interconnections between datapath columns, instead of imposing a fixed bus architecture. irregular datapaths are permitted and can be incorporated easily. The columns of the datapath are resequenced such that routing costs are minimal.>