ON CHIP CROSSTALK AVOIDANCE CODEC DESIGN USING

FIBONACCI SERIES PATTERN

Under the guidence of

Mr S.Edukondalu

(Asst Prof)

Presented By

K.BHARATH NAIDU K.KRANTHIKUMAR (11GE1A0438) (11GE1A0439) Dept of ECE Dept

of ECE

OUTLINE INTRODUCTIONSPECIFICATIONCODECCODEC DESCRIPTION1) ENCODING

2) DECODINGDETECTION OF FORBIDDEN PATTERN GENERATION OF FIBONACCI SERIES

CROSSTALK &RAISING OF GLITCHPROPOSED SOLUTIONSFINITE STATE MACHINERESULTS AND CONCLUSION

Introduction

•Integrated Circuit(IC) design has seen a revolutionary progress in the past two decades with shrinking sizes of VLSI fabrication processes.• This has an advantage of fabricating millions of transistors in a single chip IC. This paper focuses on design and implementation of an efficient CODEC which uses Forbidden Pattern Free (FPF), Fibonacci based Number System (FNS) for bus encoding. Our approach of CODEC design greatly increases the speed (approximately greater than 2.5 times)

SPECIFICATION

Design of Fibonacci series generation for 32-bit system

Detection of Forbidden patterns like 101 & 010 in series patterns

What is a Codec ?

Codec stands for encoder/Decoder or Compressor/De-compressor

It is a software or hardware that compresses and decompresses audio, video data & text streams.

Codec are of two types (lossy and lossless)

Text Codec's

A Text Codec is a function that transforms text into (when encoding) or out of (when decoding) another kind of representation. Usually, the most human-readable representation is said to be "decoded".

"Encoders" will turn the (selected or whole) text into something less readable, "Decoders" try to revert those effects as good as possible.

Codec(encoder)

An encoder is a device, circuit, transducer, software program, algorithm or person that converts information from one format or code to another, for the purposes of standardization, speed, secrecy, security or compressions

Codec(decoder)

A decoder is a device which does the reverse operation of an encoder undoing the encoding so that the original information can be retrieved.

CROSSTALK

It is a phenomenon by which a signal transmitted on one circuit or channel of a transmission system creates an undesired effect in another circuit

Glitch

Proposed solutions

Solutions for crosstalk

physical methods logical methods

introducing a coupling capacitance

Shielding process

Moving a part

Fib ionic series

Forbidden pattern

FORBIDDEN PATTERN

The series of numbers 101 and 010 are represents Forbidden series pattern is actually nothing but the continuous change in the inputs given

i.e. it consists of two pattern in binary system

(101 & 010)Let us take an example 10100111001

FIBONACCI SERIES

By definition, the first two numbers in the Fibonacci or fib-ionic sequence are 1 and 1, or 0 and 1, depending on the chosen starting point of the sequence, and each subsequent number is the sum of the previous two.

A FINITE-STATE MACHINE (FSM) OR FINITE-STATE AUTOMATON

It is a simply a state machine, is a mathematical model of computation used to design both computer programs and sequential logic circuits. In control applications, two types are distinguished

1) Meelay FSM2) Moore FSM

Moore machine

The FSM uses only entry actions, i.e., output depends only on the state. The advantage of the Moore model is a simplification of the behaviour.

The state transition diagram The total number of states in the Moore state are been represented by n states

Mealy machine:

The FSM uses only input actions, i.e., output depends on input and state. The use of a Mealy FSM leads often to a reduction of the number of states

FORBIDDEN SERIES DETECTIONAND FIBONACCI SERIES GENERATION

The block diagram of the combination of both (FSP) & (FPF) The input (forbidden series ) is been given to the Fibonacci generator ..if the output is correct it is send to the acknowledgement..or else if the glitch is formed then the pattern is resend through as input up till the acknowledgement is formed

Functional SimulationGeneration of forbidden series

Generation of Fibonacci series

Synthesis report

ConclusionDesign of CODEC by Forbidden pattern

detection in Fib ionic series For fib ionic series generation we used

behavioural modellingFor forbidden pattern generation we used

FSM-Mealy state machine

Future Scope

Design of video & audio – codec for crosstalk avoidance

Thankyou