# What is FSM in Verilog?

Table of Contents

## What is FSM in Verilog?

Finite State Machines (FSM) are sequential circuit used in many digital systems to control the behavior of systems and dataflow paths. Examples of FSM include control units and sequencers.

## Which one is the example of FSM?

There are many more examples of finite state machines we could use: a vending machine. a subway entrance turnstile. a heating system.

## What is FSM design?

The definition of a finite state machine is, the term finite state machine (FSM) is also known as finite state automation. FSM is a calculation model that can be executed with the help of hardware otherwise software. This is used for creating sequential logic as well as a few computer programs.

## What happens if the input is low in FSM?

What happens if the input is low in FSM? Explanation: There is no transition in the state if the input is low. If the system is in a particular state, it remains in that state only until the input becomes high.

## What are blocking and nonblocking statements in Verilog?

Nonblocking Statements: Nonblocking statements allow you to schedule assignments without blocking the procedural flow. You can use the nonblocking procedural statement whenever you want to make several register assignments within the same time step without regard to order or dependence upon each other.

## Which FSM model is used in Verilog coding?

In general, or you can say most of the time, we end up using Mealy FSM. Binary encoding : each state is represented in binary code (i.e. 000, 001, 010….)

## Why finite automata is called finite?

Deterministic finite automata (or DFA) are finite state machines that accept or reject strings of characters by parsing them through a sequence that is uniquely determined by each string. These machines are called finite because there are a limited number of possible states which can be reached.

## What is FSM coverage?

FSM coverage measures how many FSM states have been visited and how many transitions occur during verification. Each line, condition, register and net which is used for tracking one or more of the coverage metrics is referred to as a coverage goal, and the coverage metric reports the percentage of goals covered.

## What is FSM in digital electronics?

The Finite State Machine is an abstract mathematical model of a sequential logic function. It has finite inputs, outputs and number of states. FSMs are implemented in real-life circuits through the use of Flip Flops.

## Why do we need FSM?

A Finite State Machine, or FSM, is a computation model that can be used to simulate sequential logic, or, in other words, to represent and control execution flow. Finite State Machines can be used to model problems in many fields, including mathematics, artificial intelligence, games or linguistics.

## What are the elements of FSM?

Basic FSM elements

• Input Ports. The basic events are represented by data parsed into an input port of the FSM model interface.
• Special Events.
• Internal Events.
• Name.
• Hierarchical States.
• Current State.
• State Actions.
• Slave Process.

## What is the use of Verilog?

Verilog is a HDL (Hardware Description Language). It is used to model and simulate digital electronic circuits. Once a design is simulated, tested and ready for ‘tape-out’ to the fab, it can be synthesized to produce gate level designs that are then translated to physical design.

## What is polymorphism in System Verilog?

Encapsulation, Inheritance and Polymorphism are the most commonly used in System Verilog. Polymorphism allows the use of a variable of the superclass type to hold subclass objects and to reference the methods of those subclasses directly from the superclass variable.

## What is a finite state machine?

A finite state machine is one that has a limited or finite number of possible states. (An infinite state machine can be conceived but is not practical.) A finite state machine can be used both as a development tool for approaching and solving problems and as a formal way of describing the solution for later developers and system maintainers.

## What is state machine diagram?

State machine diagram is a behavior diagram which shows discrete behavior of a part of designed system through finite state transitions. State machine diagrams can also be used to express the usage protocol of part of a system.