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Questions and Answers
What are the two standard HDLs supported by IEEE?
What is VHDL often referred to as?
What is a characteristic of Verilog HDL?
What is an advantage of using HDLs in digital design?
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What is a feature of Behavioral and Register Transfer Level HDL?
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What is the main difference between SSI and MSI?
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What is the advantage of using CAD in digital design?
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What is the purpose of simulation in digital design?
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What is a key benefit of using HDLs in digital design?
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What is a characteristic of Verilog HDL?
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What is the main advantage of using simulation in digital design?
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What is a feature of VLSI?
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What is a benefit of using Computer-Aided Design (CAD) in digital design?
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What is a characteristic of State of the Art HDLs?
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What is the purpose of synthesis in digital design?
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What is a feature of Behavioral and Register Transfer Level HDL?
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Study Notes
Types of HDL
- There are two standard HDLs supported by IEEE: VHDL and Verilog HDL.
Verilog HDL
- Verilog HDL is a high-level computer language that models, represents, and simulates digital design.
- It supports hardware concurrency, parallel activity flow, and semantics for signal value and time.
Evolution of Computer-Aided Digital Design
- SSI (Small Scale Integration): a few gates on a chip.
- MSI (Medium Scale Integration): hundreds of gates on a chip.
- LSI (Large Scale Integration): thousands of gates on a chip.
- VLSI (Very Large Scale Integration): hundreds of thousands of gates on a chip.
- CAD (Computer-Aided Design): logic and circuit simulators, prototyping on breadboard, and layout by hand (on paper or computer terminal).
Importance of HDLs
- Retargeting to a new fabrication technology.
- Functional verification earlier in the design cycle.
- Textual representation of the design, similar to computer programs, making it easier to understand.
Verilog HDL Popularity
- General-purpose HDL.
- Easy to learn and use, with syntax similar to C.
- Allows different levels of abstraction and mixing them.
- Supported by most popular logic synthesis tools.
- Post-logic-synthesis simulation libraries by all fabrication vendors.
- PLI (Programming Language Interface) to customize Verilog simulators to designers' needs.
HDL Design Flow
- Simulation: checks if the design works fine.
- Synthesis: implements the design on real hardware.
Types of HDL
- There are two standard HDLs supported by IEEE: VHDL and Verilog HDL.
Verilog HDL
- Verilog HDL is a high-level computer language that models, represents, and simulates digital design.
- It supports hardware concurrency, parallel activity flow, and semantics for signal value and time.
Evolution of Computer-Aided Digital Design
- SSI (Small Scale Integration): a few gates on a chip.
- MSI (Medium Scale Integration): hundreds of gates on a chip.
- LSI (Large Scale Integration): thousands of gates on a chip.
- VLSI (Very Large Scale Integration): hundreds of thousands of gates on a chip.
- CAD (Computer-Aided Design): logic and circuit simulators, prototyping on breadboard, and layout by hand (on paper or computer terminal).
Importance of HDLs
- Retargeting to a new fabrication technology.
- Functional verification earlier in the design cycle.
- Textual representation of the design, similar to computer programs, making it easier to understand.
Verilog HDL Popularity
- General-purpose HDL.
- Easy to learn and use, with syntax similar to C.
- Allows different levels of abstraction and mixing them.
- Supported by most popular logic synthesis tools.
- Post-logic-synthesis simulation libraries by all fabrication vendors.
- PLI (Programming Language Interface) to customize Verilog simulators to designers' needs.
HDL Design Flow
- Simulation: checks if the design works fine.
- Synthesis: implements the design on real hardware.
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Description
Learn about the two standard HDLs supported by IEEE, including VHDL and Verilog HDL, and their origins and applications.
