一种非零偏差时钟网布线算法

特定的非零偏差时钟网比零偏差时钟网更具优势,它有助于提高时钟频率、降低偏差的敏感度.文章提出了一种新的非零偏差时钟树布线算法,它结合时钟节点延时和时钟汇点位置,得到一个最大节点延时次序合并策略,使时钟树连线长度变小.实验结果显示,这种算法与典型的最邻近选择合并策略相比较,可以减少20%～30%的总连线长度.

A Non-Zero Skew Clock Tree Routing Algorithm

The specified non-zero skew clock tree is better than zero skew clock trees. It can improve clock frequency and tolerance to process variations. In this paper,a new non-zero skew clock tree routing algorithm is proposed. Considering the relation between node delay and sink location, a maximum node delay ordering merging scheme is proposed to minimize wire length. Experimental results show that the proposed algorithm can reduce the total wire length by 20% to 30% over typical nearest-neighbor selection merging scheme.