User guide

22-62

SystemVerilog Design Constructs

Interfaces

Interfaces were developed because most bugs occur between blocks

in a design and interfaces help eliminate these wiring errors.

Interfaces are a way of encapsulating the communication and

interconnect between these blocks, but they are more than just that.

They help you to develop a divide and conquer methodology and are

reusable in other places in a design and in other designs.

Figure 22-4 Block Diagrams

Consider the wide arrows in the block diagram on the left to be

interfaces. They are more than just wire bundles, They are an

implementation of how to communicate between blocks. As

interfaces, they help you to focus on how information is

communicated between block.

Encapsulation