Dataflow modeling

Dataflow model For complex design: number of gates is very large - need a more effective way to describe circuit Dataflow model: Level of abstraction is higher than gate-level, describe the design using expressions instead of primitive gates Circuit is designed in terms of dataflow between register, how a design processes data rather than instantiation of individual gates RTL (register transfer level): is a combination of dataflow and behavioral modeling

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Continuous assignment is one of the main constructs used in dataflow modeling. A continuous assignment is always active and the assignment expression is evaluated

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Expressions, Operators, and Operands Dataflow modeling describes the design in terms of expressions instead of primitive gates. Expressions, operators

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[ Team LiB ] 6.3 Expressions, Operators, and Operands Dataflow modeling describes the design in terms of expressions instead of primitive gates. Expressions, operators, and operands form the basis of dataflow modeling.

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[ Team LiB ] 6.1 Continuous Assignments A continuous assignment is the most basic statement in dataflow modeling, used to drive a value onto a net. This assignment replaces gates in the description of the circuit and describes the circuit at a higher level of abstraction.

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first two, 4-to-1 multiplexer and 4-bit counter, are taken from Section 6.5, Examples. Earlier, these circuits were designed by using dataflow statements. We will model these circuits with behavioral statements.

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