Chapter2

Chapter2 - Modeling Digital Systems Sudhakar Yalamanchili,...

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(1) Modeling Digital Systems © Sudhakar Yalamanchili, Georgia Institute of Technology, 2006
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(2) Systems Hierarchy Functions CPUs, memories ALUs, registers Switches Increasing Fidelity #of events Level of Abstraction
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(3) Describing Systems From Webster’s Dictionary: System : “An assemblage of objects united by some form of regular interaction or dependence” What aspects of a digital system do we want to describe? Interface Function: behavioral and structural To the Processor microphone headphones speakers amplifier ZPS 61899
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(4) What Elements Should be in a Description? Descriptions should be at multiple levels of abstraction The descriptive elements must be common to multiple levels of hierarchy The elements should enable meaningful and accurate simulation of hardware described using the elements Elements should have attributes of time as well as function The elements should enable the generation of hardware elements that realize a correct physical implementation Existence of a mapping from elements to VLSI devices
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(5) What Elements Should be in a Description? VHDL was conceived for the description of digital systems From switches to networked systems Keep in mind the pragmatic issues of design re-use and portability of descriptions Portability across technology generations Portability across a range of cost/performance points Attributes of digital systems serve as the starting point Language features designed to capture the key attributes
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(6) Attributes of Digital Systems Digital systems are about
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This note was uploaded on 01/05/2012 for the course ECEN 212 taught by Professor Hamilton during the Fall '11 term at BYU.

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Chapter2 - Modeling Digital Systems Sudhakar Yalamanchili,...

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