VHDL Design ExampleStructural Specification
As a third method, a structural description can be created from predescribed components
- These gates can be pulled from a library of parts
The previous data flow description maps easily to logic gates. The models for these gates can come from many different libraries, which may represent specific implementation technologies, for example.
VHDL structural descriptions may similarly be used to describe the interconnections of high level components (e.g. multiplexors, full adders, microprocessors).