Hardware/Software Introduction Chapter 1 Introduction

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Spiral-like model • Designer develops or acquires architecture • Develops application(s) • Maps application to architecture • Analyzes design metrics • Now makes choice – Modify mapping – Modify application(s) to better suit architecture – Modify architecture to better suit application(s) • Not as difficult now – Maturation of synthesis/compilers – IPs can be tuned • Continue refining to lower abstraction level until particular implementation chosen Y-chart Architecture Application(s) Mapping Analysis Embedded Systems Design: A Unified Hardware/Software Introduction, (c) 2000 Vahid/Givargis 92
Summary • Design technology seeks to reduce gap between IC capacity growth and designer productivity growth • Synthesis has changed digital design • Increased IC capacity means sw/hw components coexist on one chip • Design paradigm shift to core-based design • Simulation essential but hard • Spiral design process is popular Embedded Systems Design: A Unified Hardware/Software Introduction, (c) 2000 Vahid/Givargis 93
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Embedded Systems Design: A Unified
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Embedded systems overview • Embed
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Some common characteristics of embe
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Design challenge - optimizing desig
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Design challenge - optimizing desig
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Time-to-market: a demanding design
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Losses due to delayed market entry
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The performance design metric • W
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Processor technology • The archit
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General-purpose processors • Prog
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Application-specific processors •
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Full-custom/VLSI • All layers are
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PLD (Programmable Logic Device) •
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Graphical illustration of Moore’s
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The co-design ladder • In the pas
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Design productivity gap • 1981 le
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Summary • Embedded systems are ev
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Ch3. GPP: Software Summary • Gene
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Ch7. Digital Camera Example Summary
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Embedded Systems Design: A Unified
Page 41 and 42: Introduction • Design task - Defi
Page 43 and 44: Automation: synthesis • Early des
Page 45 and 46: Increasing abstraction level • Hi
Page 47 and 48: Gajski’s Y-chart • Each axis re
Page 49 and 50: Two-level minimization • Represen
Page 51 and 52: Minimum cover: K-map approach • K
Page 53 and 54: Minimum cover: heuristics • K-map
Page 55 and 56: Example • Minimized 2-level logic
Page 57 and 58: Technology mapping • Library of g
Page 59 and 60: Integrating logic design and physic
Page 61 and 62: Behavioral synthesis • High-level
Page 63 and 64: System synthesis • Tasks (cont.)
Page 65 and 66: Temporal vs. spatial thinking • D
Page 67 and 68: Verification • Ensuring design is
Page 69 and 70: Simulation • Create computer mode
Page 71 and 72: Advantages over physical implementa
Page 73 and 74: Simulation speed • Relative speed
Page 75 and 76: Reducing precision/accuracy • Don
Page 77 and 78: Integrating GPP/SPP simulations •
Page 79 and 80: Emulators • General physical devi
Page 81 and 82: Reuse: intellectual property cores
Page 83 and 84: Advantages/disadvantages of hard co
Page 85 and 86: New challenges to processor provide
Page 87 and 88: New challenges to processor users
Page 89 and 90: Waterfall method • Not very reali
Page 91: General-purpose processor design mo
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