一种通道式布图算法及SC电路版图设计系统的研究

本文描述了一种通道式布图算法及由此实现的开关电容（ＳＣ）电路的版图设计系统——ＬＩＮＧ８５。该系统采用积木块式的元胞，行陈列的模式结构。用一维相关算法按相关元胞相距最近的原则完成行布局。分解嵌入的双层布线算法把分解后的两端子网按不交叉排序关系尽可能密集且不换层次地嵌入到各走线道，同时对穿孔作进一步处理．最后进行数据转换并完成已建库元胞的装载和连接，输出完整版图。

A Channel Layout Algorithm and the Study of a Mask Artwork Design System for SC Circuits

This paper describes a channel algorithm and a mask artwork design system-LING85. The latter is based on this algorithm and used specially to design mask artwork of the Switched-Capacitor (SC) circuits with two phase clocks. The system uses blocked cell and row array structure. One dimensional correlation algorithm is used to place each cell in corresponding row with the object of related cells being placed as near as possible. The two layer routing algorithm is decomposing and inlaying, that is, inlaying the decomposed 2terminal subnets into each router as dense and layer unchanging as possible, then dealing with the vias further more. Finally, the data are inverted, the constructed library modules are loaded and connected, and the whole artwork is completed.