10-10-2012, 11:46 AM
CLOCKLESSS CHIPS
CLOCKLESSS.pptx (Size: 423.07 KB / Downloads: 38)
INTRODUCTION:-
CLOCKLESSS CHIPS OR ASYNCHRONOUS CHIPS DON’T HAVE A GLOBAL CLOCK.
BUT THERE SHOULD BE SOME CONTROL MECHANISM INSTEAD OF GLOBAL CLOCK.
CLOCKED CHIPS OR SYNCHRONOUS CHIPS HAVE A GLOBAL CLOCK FOR CONTROLLING TIMING OF ENTIRE CHIP.
CLOCKLESS CHIP HAVE SOME ADVANTAGES LIKE:-LOW POWER CONSUMPTION,HIGH SPEED & LESS ELECTROMAGNETIC NOISE OVER CLOCKED CHIP.
CONCEPT OF CLOCK:-
CLOCK IS A TINY CRYSTAL OSCILLATOR.
CLOCK REGULATES THE RATE AT WHICH THE INSTRUCTION ARE EXECUTRD.THIS RATE IS KNOWN ASCLOCK RATE OR CLOCK SPEED.
THE CLOCK SPEED CAN BE EXPRESSED IN TERMS OF GIGA HERTZ & MEGA HERTZ.
ONE ADVANTAGE OF CLOCK IS THAT CLOCK SIGNALS TO VARIOUS COMPONENTS INSIDE A CHIP WHEN TO INPUT & OUTPUT CAN BE DETERMINED VERY EASY.
BECAUSE OF THIS CLOCK THERE SOME DISADVANTAGES LIKE:-HIGH POWER CONSUMPTION,LOW SPEED WHICH CAN BE OVERCOME BY CLOCKLESS CHIP.
SYNCHRONOUS CHIP :-
ADVANTAGES:
CHIP DESIGN VERY SIMPLE BECAUSE OF CLOCK.
DISADVANTAGES:
WESTAGE OF COMPUTATIONAL TIME AFFECTS THE SPEED OF CHIP.
HIGHER POWER CONSUMPTION.
DESIGN OF COMPLEX CIRCUIT CAN’T BE DONE
BECAUSE OF HIGH POWER CONSUMPTION.
CHALLENGES:-
INTERFACING BETWEEN SYNCHRONOUS AND ASYNCHRONOUS.
:- MANY DEVICES AVAILABLE NOW ARE
SYNCHRONOUS IN NATURE.
:- SPECIAL CIRCUITS ARE NEEDED TO
ALLIGN THEM.
LACK OF EXPERTISE.
LACK OF TOOLS.
ENGINEERS ARE NOT TRAINED IN THESE FIELD.
ACADEMICALLY,NO COURSE AVAILABLE.
CLOCKLESSS.pptx (Size: 423.07 KB / Downloads: 38)
INTRODUCTION:-
CLOCKLESSS CHIPS OR ASYNCHRONOUS CHIPS DON’T HAVE A GLOBAL CLOCK.
BUT THERE SHOULD BE SOME CONTROL MECHANISM INSTEAD OF GLOBAL CLOCK.
CLOCKED CHIPS OR SYNCHRONOUS CHIPS HAVE A GLOBAL CLOCK FOR CONTROLLING TIMING OF ENTIRE CHIP.
CLOCKLESS CHIP HAVE SOME ADVANTAGES LIKE:-LOW POWER CONSUMPTION,HIGH SPEED & LESS ELECTROMAGNETIC NOISE OVER CLOCKED CHIP.
CONCEPT OF CLOCK:-
CLOCK IS A TINY CRYSTAL OSCILLATOR.
CLOCK REGULATES THE RATE AT WHICH THE INSTRUCTION ARE EXECUTRD.THIS RATE IS KNOWN ASCLOCK RATE OR CLOCK SPEED.
THE CLOCK SPEED CAN BE EXPRESSED IN TERMS OF GIGA HERTZ & MEGA HERTZ.
ONE ADVANTAGE OF CLOCK IS THAT CLOCK SIGNALS TO VARIOUS COMPONENTS INSIDE A CHIP WHEN TO INPUT & OUTPUT CAN BE DETERMINED VERY EASY.
BECAUSE OF THIS CLOCK THERE SOME DISADVANTAGES LIKE:-HIGH POWER CONSUMPTION,LOW SPEED WHICH CAN BE OVERCOME BY CLOCKLESS CHIP.
SYNCHRONOUS CHIP :-
ADVANTAGES:
CHIP DESIGN VERY SIMPLE BECAUSE OF CLOCK.
DISADVANTAGES:
WESTAGE OF COMPUTATIONAL TIME AFFECTS THE SPEED OF CHIP.
HIGHER POWER CONSUMPTION.
DESIGN OF COMPLEX CIRCUIT CAN’T BE DONE
BECAUSE OF HIGH POWER CONSUMPTION.
CHALLENGES:-
INTERFACING BETWEEN SYNCHRONOUS AND ASYNCHRONOUS.
:- MANY DEVICES AVAILABLE NOW ARE
SYNCHRONOUS IN NATURE.
:- SPECIAL CIRCUITS ARE NEEDED TO
ALLIGN THEM.
LACK OF EXPERTISE.
LACK OF TOOLS.
ENGINEERS ARE NOT TRAINED IN THESE FIELD.
ACADEMICALLY,NO COURSE AVAILABLE.