B.Tech Industrial Training Presentation onVLSI,VHDL and PCB Design

Presented byRICHA BHARTI

20130707 E&C Engg. Dept., SMIT

Under the Supervision of

DR.SAGAR BOSE

TRAINING HEAD

CONTENTS

• Introduction• Software used in VLSI Design• VLSI Design Hierarchy • Basic VHDL Code • Programmable Logic Device (PLD)• PCB• Types Of Board • History Of PCB• Types Of PCB • Steps Involved In PCB• Sofware Used In PCB Designing• Fabrication Process• Application

1

INTRODUCTION TO VLSI,VHDL AND PCB DESIGN

Stands for Very Large Scale Integration. Process of creating integrated circuits by combining. thousands of

transistor- based circuits into a single chip. Design/Manufacturing of extremely small, complex circuit modified

semiconductor material. 4.Language used for designing VLSI circuit

VHDL. printed circuit board can be shortly called as PCB. PCB is a non conductive substrate that mechanically supports and

electrically connects the electronic components using tracks, pads and other features etched on a laminated copper sheet.

SOFTWARE USED IN VLSI

DSCH

XILINX

ALTERA

MICROWIND

Software Used in VLSI Design (Contd.)

Use of DSCH - Three types of designs:-

Gate Level Design

Chip Level Design

CMOS Level Design

. Software Used in VLSI Design (Contd.)

Design hierarachy

1. idea (need) 2. specifications 3. design archtecture 4. RTL coding

5. RTL Verification

6. Synthesis7.Foundry8.IC Chip

1.Ideas

85/95

Any thing we needs chip •Microprocessor•Microcontroller•Memories•Printer•Mobile•Digital security lock

2.Specifications

This is the crucial step as it will affect the future of the product. Here, vendors may want to get feedback from potential customers on what they are looking for•Instruction set

•Interface (I/O pins)

•Organization of the system

•Functionality of each unit in the system, and how to communicate it to other units.

3. Design Architecture

This is where the main work starts. With the help of the specification sheet the target IC’s architecture is decided and a layout for same is created by design engineers using EDA tools.

4. RTL coding

• This implies that the VHDL/VERILOG code written based on the architecture describes how data is transformed as it is passed from register to register.

• RTL coding tool• Xilinx• Vim• Emacs• HDL Turbo Writer

Double-sided PCB

Multilayer PCB

PCB

Multilayer PCB

RTL VERIFICATION WAVEFORM

Double-sided PCB

Multilayer PCB

BThis is where the design now start to get physical.

Logic synthesis is a process by which the  desired circuit

behavior i.e. Register Transistor Level is turned into a

design in terms of logic gates which drives the circuit or

architecture.

6. synthesis

Double-sided PCB

Multilayer PCB

PCB

Multilayer PCB

FPGA KIT Field programmable gate array (FPGA) • It is a IC which can be be programmable by user to capture the logic.•Capable to capturing 100,000 designed gates.

Double-sided PCB

Multilayer PCB

PCB

Multilayer PCB

7.Foundry

The design is sent for Fabrication for mass production to foundry .

Double-sided PCB

Multilayer PCB

PCB

Multilayer PCB

8.IC Chip

Application of VLSI

Basic VHDL Code (Contd.)Types of VHDL ArchitectureData flow:- -It uses concurrent signal assignment statement. - It describes the transfer of data from input to output signals.Behavioral:- - It is a high level description - It contains a set of assignment statement to represent behaviour.Structural:- - Describe the circuit structure in terms of logic gates

- Interconnects wiring between logic gates to form a circuit net list.

Double-sided PCB

Multilayer PCB

PCB

Multilayer PCB

Types of PCBs:-1.Single Sided PCB2.Doulbe Sided PCB3.Multilayer PCB

Steps involved in PCB Designing

.1.Part research and selection.2.Schematic capture and simulation3.Board layout 4.fabrication

Computer Aided Design

1.Proteus 2.Orcad 3.Eagle4.utilboard

.

Fabrication Process

1.schematic preparation2.Layout prepartion3.Etching process 4.Drilling5.Solder masking6.Silk screen7.Electrical testing

Application

AcknowledgementI have taken efforts in this project. However, it would not have been possible without the kind support and help of many individuals and organizations. I would like to extend my sincere thanks to all of them.I am highly indebted to DR.SAGAR BOSE for their guidance and constant supervision as well as for providing necessary information regarding the project & also for their support in completing the project.I would like to express my gratitude towards my parents & member of HEWLETT PACKARD for their kind co-operation and encouragement which help me in completion of this project.I would like to express my special gratitude and thanks to industry persons for giving me such attention and time.My thanks and appreciations also go to my colleague in developing the project and people who have willingly helped me out with their abilities.

 1.Student Reference Guide on 'VLSI, VHDL

AND PCB DESIGN' by hp education academia program

2.Search Engines such as Google Chrome

References