The document outlines the VLSI design flow, including the basics where the design starts with specifications and is iteratively modified until requirements are met. It also describes the main stages of the design flow as architecture design, gate-level design, circuit-level design, HDL coding, simulation, verification, and fabrication. Additionally, it explains the three domains of VLSI design as behavioral, structural, and physical.

1. VLSI Design Flow
By Prof. Hitesh Dholakiya
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VLSI Lecture series
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2. Outlines
❖ Basics of VLSI Design flow
❖ Flow Chart of VLSI Design flow
❖ Domains of VLSI Design flow
❖ Y chart of VLSI Design flow
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3. Basics of VLSI Design Flow
❖ The design flow start with a given set of specification or
requirements.
❖ So, system should get design with respect to given specifications.
❖ At the end, when the desired specifications are not met, the design
has to be modified and re-checked several times until it meets the
required specifications.
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4. Flow Chart of VLSI Design Flow
Design Specification
Architecture design
Gate level design
Circuit level design
HDL Coding
Simulation
Verification
Meets
Fabrication
Yes
No
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5. Domains of VLSI Design Flow
❖ The design description for a VLSI circuit may be described in forms of
three domains:
1. Behavioral Domain
2. Structural Domain
3. Physical Domain
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6. Y Chart of VLSI Design
Behavior
Domain
Structural
Domain
Physical Domain
Algorithm
System
Chip Floor plan
Finite State
Machine
Register
Modules
placement
Module
Description
Logic Gate
Cell placement
Boolean
Equation
Transistor
Mask
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