If none of the existing interface types are suitable for your application, you have two options for creating a suitable interface.
The first option is to create an interface definition in the Vivado IDE by selecting . This is a useful approach if you need to use the interface in multiple decouplers.
The second option is to create an ad-hoc interface in the decoupler using
the DFX Decoupler core customization page or
configuration properties. To do this, create an interface of type undef and add signals that you require, as shown in the following
figure.
Figure 1. Creating an Custom Undef Interface
