Fused Netlist & Layout

Netlists and layouts are just different representations of a circuit. LibrEDA reflects this with the netlist and layout traits which build on top a hierarchical structure. Having both of this views is not sufficient though. For many purposes it is necessary to know the links between netlist and layout. For example it is helpful to know which layout shape belongs to which net or to know where the physical geometry of a pin is located. For this reason LibrEDA uses the L2NBase and L2NEdit traits. L2N means layout-to-netlist. The both traits extend the layout and netlist traits with the most fundamental links. This includes

• The layout shapes which belong to a pin.
• The layout shapes which belong to a net.
• The net which is connected to a layout shape.
• The pin which is made by a layout shape.