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Institute of Applied Microelectronics and Computer Engineering College of Computer Science and Electrical Engineering, University of Rostock Spezielle Anwendungen des VLSI-Entwurfs Special applications of VLSI design Low ( -est! ) Power Adder Pres.2 Andreas Tockhorn, Hagen Sämrow Course and contest 2005
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Institute of Applied Microelectronics and Computer Engineering College of Computer Science and Electrical Engineering, University of Rostock Spezielle Anwendungen des VLSI-Entwurfs Special applications of VLSI design Inhalt 1.Analyse der vorhandenen Addierer 2.Ergebnisse 3.Weitere Optimierungsmöglichkeiten
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Institute of Applied Microelectronics and Computer Engineering College of Computer Science and Electrical Engineering, University of Rostock Spezielle Anwendungen des VLSI-Entwurfs Special applications of VLSI design Analyse -Adder_top.scr -Frequenz 50 MHz frequency = 50 -max. dyn. Power = 10 uW set_max_dynamic_power 10 uW => Ergebnis: max. Frequenz, Fläche, Leistungsaufnahme bei 50 MHz -Leistungsaufnahme bei max. Frequenz Ausführen des power_report- Skripts
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Institute of Applied Microelectronics and Computer Engineering College of Computer Science and Electrical Engineering, University of Rostock Spezielle Anwendungen des VLSI-Entwurfs Special applications of VLSI design Ergebnisse DesignVersionmax. Frequenz / MHz dyn. Leistung / uW bei 50 MHz dyn. Leistung / uW bei max. Frequenz Fläche / um² Comb. RCA1111,615,933513,17231078644 CSKA 2bit1212 141,24 5,8827 16,5891 1078184 CSKA 4bit1212 158,98 110,49 5,9796 5,9349 18,8955 13,0568 1078412 1078656 CSKA 4bit mit CLA1125,005,911314,77811078452 CSKA 8bit1212 143,68 116,41 5,9963 5,9268 17,1493 13,7502 1078562 1078579 CSKA variabel 1-2-3-4-5-6-5-3-2-1 1130,555,902615,34691078339 CSKA variabel 2-2-3-3-4-4-4-3-3-2-2 1130,215,990715,34191078347 Vorgabe152,205,847217,77551077018
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Institute of Applied Microelectronics and Computer Engineering College of Computer Science and Electrical Engineering, University of Rostock Spezielle Anwendungen des VLSI-Entwurfs Special applications of VLSI design Optimierungsmöglichkeiten -Addiererarchitektur optimieren (VHDL – Quellen) -Verwendung von low Power Gattern (set_dont_use,...) -Designconstraints optimieren -...
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