Recommended decoupling quantities for core, auxiliary, and VCCO rails in Versal devices can be obtained via the PDM tool. The PDM tool provides a custom set of decoupling guidelines based on the actual usage parameters of the design. Recommend decoupling capacitor values and manufacturers are listed in PDM. The ESR and ESL values are also listed to allow for selection of equivalent capacitors based on availability and the user's application requirements. It is recommended to validate the power decoupling network with a board level S- parameter simulation.
The following sections illustrate the methodology that the PDM tool uses for determining the appropriate number of decoupling capacitors to use for a particular power rail.