GAJSKI Y CHART PDF

The Gajski-Kuhn Y-chart is a model which captures the considerations in designing semiconductor devices. The three domains of the Gajski-Kuhn Y-chart are on radial axes. Each of the domains can be divided into levels of abstraction, using concentric rings. At the top level outer ring , we consider the architecture of the chip; at the lower levels inner rings , we successively refine the design into finer detailed implementation:. Creating a structural description from a behavioural one is achieved through the processes of high-level synthesis or logical synthesis. Just ask in the LaTeX Forum.

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Five concentric circles characterize the hierarchical levels within the design process, with increasing abstraction from the inner to the outer circle.

Each circle characterizes a model, explained after introducing the three domains. With these three domains the most important properties of a system can be well specified.

The domain axes intersect with the circles that show the abstraction levels. The five circles from highest to lowest level of abstraction are outer to inner circles :. Detailed descriptions of what is going on, from what register over which line to where a data is transferred, is the contents of this level. I personally like this taxonomy, as it shows how the word abstraction can be seen from different point of views.

It is a refined model but simple enough to get an overview on one eye shot. Keeping in mind that the Gajski-Kuhn chart was created in , you can see that the ideas of [ BR01 ] are not totally new, their achievement was more to transfer the approach of Gajski and Kuhn to the automotive sector and to determine the possibility of using modeling languages like UML for the problem. Gajski-Kuhn Y-chart, pursuant to [ DH99 , p. Design Levels, [ DH99 , p.

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Example: Gajski-Kuhn Y-chart

Daniel Gajski and Robert Kuhn developed it in In , Robert Walker and Donald Thomas refined it. According to this model, the development of hardware is perceived within three domains that are depicted as three axis and produce a Y. Along these axis, the abstraction levels that describe the degree of abstraction. The outer shells are generalisations, the inner ones refinements of the same subject.

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Gajski-Kuhn chart

Very-large-scale integration VLSI is the process of creating an integrated circuit IC by combining thousands of transistors into a single chip. VLSI began in the s when complex semiconductor and communication technologies were being developed. The microprocessor is a VLSI device. The electronics industry has achieved a phenomenal growth over the last few decades, mainly due to the rapid advances in large scale integration technologies and system design applications. With the advent of very large scale integration VLSI designs, the number of applications of integrated circuits ICs in high-performance computing, controls, telecommunications, image and video processing, and consumer electronics has been rising at a very fast pace.

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Five concentric circles characterize the hierarchical levels within the design process, with increasing abstraction from the inner to the outer circle. Each circle characterizes a model, explained after introducing the three domains. With these three domains the most important properties of a system can be well specified. The domain axes intersect with the circles that show the abstraction levels. The five circles from highest to lowest level of abstraction are outer to inner circles :.

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