In electronics, a crossover switch or matrix switch is a switch connecting multiple inputs to multiple outputs using complex array matrices designed to switch inputs to outputs such that each output is connected to only one input, but usually inputs may be connected to multiple outputs.
There are blocking and non-blocking types of cross-over switches.
Typical crossover matrices follow the formula: an N×N Banyan switch uses (N/2) log N elements.
CAD and AI can be used to take the drudgery out of these designs.
The switches are measured by how many stages, and how many up/down sorters and crosspoints.