Place and Route are two steps in the automated process of turning some HDL into GDS2 files. We will look at how OpenLane does these steps using the seven segment seconds example. I have used my presentation tools to generate these images. Place Placement is done in two steps, coarse and fine. The coarse step puts the standard cells in roughly the right place. This may be referred to as global placement, or initial placment. The aim here is to minimise the estimated total wire length of all th...
