Computer-aided Design (5)
VHDL behavioral model of a full adder circuit (Figure 2.38)
- Entity defines the interface between the circuit and the outside world.
- Architecture defines the function implemented within the circuit.
- Multiple architectures may be defined for a given entity.
Structural model
- Interconnection of components.
- Behavior is deduced from the behavioral models of individual components and their interconnection.
- Represented by:
- Logic or schematic diagram
- Netlist (textual representation of schematic diagram)
- HDL description of circuit structures.