What is Verilog?
Verilog is an HDL (Hardware Description Language) for describing electronic circuits and systems. Circuit parts are constructed inside a Module in Verilog. Both behavioral and structural statements are present. Circuitry elements like logic gates, counters, and microprocessors are represented by structural statements(netlist). Programming constructs like loops, if-then statements, and stimulus vectors are represented by behavioral statements.
The behavior of electrical circuits, typically digital circuits, is described by the Verilog Hardware Description Language (Verilog HDL). The IEEE standards define Verilog HDL. There are three widely used versions: SystemVerilog 2005, Verilog 2001, and Verilog 1995. Verilog HDL can be used to design hardware and to create test entities to determine how a piece of hardware behaves.
Verilog Abstraction Levels
- Behavioral level
- Register-transfer level
- Gate level
How is Verilog useful?
- The level of abstraction Verilog creates serves to obscure the specifics of its technological implementation. Verilog enables us to concentrate on the behavior and deal with the remainder later.
- For instance, a D flip-flop design would need to know, among many other technology-related aspects, how the transistors should be organized to create a positive-edge triggered FF and what the rise, fall, and CLK-Q periods are are are required to latch the value onto a flop.
- A deeper comprehension of a transistor’s physical properties would also be necessary to control power consumption, timing, and the capacity to drive nets and other flops.