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Spezielle Anwendungen des VLSI

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Title: Special applications of VLSI design Author: Claas Cornelius Keywords: Spezielle Anwendungen des VLSI Entwurfs Last modified by: Windows User – PowerPoint PPT presentation

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Title: Spezielle Anwendungen des VLSI


1
Spezielle Anwendungen des VLSI Entwurfs
Applied VLSI design
  • Course and contest
  • Results of Phase 2
  • Martin Kittel
  • Sebastian Stieber

2
Results Phase 1
  • Pezaris-Array-Multiplier
  • Ripple-Carry-Adder
  • No Pipelines

Mandatory values for FGPA Mandatory values for FGPA
Area A ( of pairs) 3203
Frequency f 63,12 MHz
Eavg 0.5155633
Metric 921,58 s
3
Improvements
  • Multiplier
  • Changed Operands (Metric 420.0)
  • Replace 0.5-Coefficient-Multiplier with Shifter
    (Metric 241.5)
  • Adder
  • No Changes

4
Improvements
  • Approximate results
  • Error 0.2499477
  • Metric 30.28
  • New Multiplier
  • Unique CSA-Tree for each Coefficient
  • Metric 22.23

5
Advantages / Disadvantages
  • Pro
  • Should be smaller
  • Should be faster
  • Contra
  • Complex routing

6
Improvements
  • Pipelining
  • 3 Stages
  • Metric 13.36

Mandatory values for FGPA Mandatory values for FGPA
Area A ( of pairs) 1993
Frequency f 192,1 MHz
Eavg 0.2499477
Metric 13,36 s
7
Backannotated Design
  • Timing Constraints 7.483 ns

Mandatory values for FGPA Mandatory values for FGPA
Area A ( of pairs) 1336
Frequency f 133,636 MHz
Eavg 0.2499477
Metric 8,63 s
8
ToDo
  • Phase 3
  • Mapping on ASIC

9
Thank you for your attention!
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