Let's Program the Transistors
Finite State Machines (FSMs) are fundamental building blocks in digital design, controlling everything from simple counters to complex communication protocols. If you’re learning Verilog or designing digital circuits, understanding how to implement FSMs efficiently is essential. In this blog post, we’ll walk through the core components of an FSM, provide a practical example of a…
In digital design, the reset signal is one of the most fundamental control signals. It ensures that your digital circuits start in a known, stable state before normal operation begins. Whether you’re designing a simple flip-flop or a complex processor, understanding resets is crucial for reliable and predictable behavior. In this post, we’ll explore: Why Do We…
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Verilog is a powerful hardware description language widely used for designing digital circuits. However, writing Verilog code that can be successfully synthesized into hardware requires understanding the synthesis constructs – the subset of Verilog that synthesis tools can interpret and convert into physical gates and flip-flops. In this blog post, we’ll explore the essential synthesis constructs…
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1. Model a tri-state buffer in Verilog. 2. Implement a 2-to-1 multiplexer in Verilog using a continuous assignment. 3. Model a combinational circuit using case? 4. How do you model a flip-flop in Verilog? A flip-flop is edge sensitive. The following code represents a positive-edge-triggered D flip-flop that stores the value of d at each rising clock edge. 5. How…
1. Explain the concept of sensitivity lists in Verilog. A sensitivity list specifies the signals that trigger the execution of an always block when they change. Example: Here, the block executes whenever a or b changes. 2. What is the purpose of generate statements in Verilog? The generate statement is used to dynamically create repetitive hardware structures or conditional instantiations during elaboration. Example: 3. Discuss…
Read More “Basic Verilog Questions for Beginners (Part – 3) : Build Your Foundations” »
1. Explain the difference between blocking and non-blocking assignments. Example: 2. What is the difference between posedge and negedge? Example: 3. What is the purpose of the assign statement? The assign statement is used for continuous assignments in combinational logic. It is used to drive values to wire data types. Example: 4. How do you declare a parameter in Verilog? A parameter is…
Read More “Basic Verilog Questions for Beginners (Part – 2) : Build Your Foundations” »
1. What is Verilog and why is it used in VLSI design? Verilog is a Hardware Description Language (HDL) widely used to design and model digital electronic systems. It helps in writing structured, reusable code to describe how a circuit should function. Verilog is crucial in VLSI design because it supports simulation, verification, and hardware…
Read More “Basic Verilog Questions for Beginners (Part – 1) : Build Your Foundations” »
When working with Verilog for digital design, one common question that arises is whether the initial block is synthesizable. The short answer is generally no. initial blocks are primarily meant for simulation and testbench purposes, not for actual hardware synthesis. What is an initial Block? The initial block in Verilog is used to set initial values for signals or variables at the very…
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Although all $display, $monitor, $write and $strobe in System Verilog seem to be similar, there is a slight difference. $display is the normal display, which executes its parameters wherever it is present in the code. $write is similar to $display except that $display displays the contents in the next line (cursor moves to the next…
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Synthesis transforms the simple RTL design into a gate-level netlist with all the constraints as specified by the designer. In simple language, Synthesis is a process that converts the abstract form of design to a properly implemented chip in terms of logic gates. Synthesis takes place in multiple steps: There are various tools which can…