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本文针对宏单元阵列的特点,提出了构造布局和布局改善同时进行的布局算法和以布局均匀和信号网分布均匀为主要目标的多目标布局评价函数.它在布局过程中就考虑到布局对布线的影响,并自始至终地把总体布线的思想恰如其份地和布局问题结合起来.另外,比以在的算法增加了以局部区域通道布线密度下降为目标的通道布线密度均匀化处理,从而极大地减少了由于局部区域拥挤而造成整个布图失败的可能性.实用结果表明该算法的布局效果是良好的.
In this paper, according to the characteristics of macrocell arrays, a layout algorithm is proposed to improve the structure layout and layout simultaneously, and the multi-objective layout evaluation function with uniform layout and even distribution of signal network is taken into account. , And integrated the idea of the overall wiring properly with the layout problem from beginning to end.In addition, compared with the algorithm in the prior art, the density of the wiring density of the channel, which aims to reduce the wiring density of the local area channels, is increased, Reducing the possibility of the entire layout failing due to the congestion of the local area.The practical results show that the layout effect of the algorithm is good.