After building a CPU, utilities for handling bus interconnects, several DMAs and memory controllers, I often find my time focused on building interfaces between designs and external peripherals. This seems to be where most of the business has landed for me. Often, these peripherals require a clock output, coming from the design, and so I’d like to spend some time describing how to generate such a “device” clock. There’s actually two topics that need to be discussed when working with modern high.
