[理工] [計組] 96台大

看板Grad-ProbAsk作者 (大飛)時間13年前 (2013/01/27 22:32), 編輯推噓0(002)
留言2則, 1人參與, 最新討論串1/1
5. System 1 32-bit bus,clock rate=33MHz,2.5V System 2 64-bit bus,clock rate=66MHz,1.8V average capacitance on each bus line is 2pF for bus in System1 what is the maximum average capacitance allowed for the bus of System2 so the peak power dissipation of System2 will not exceed that of the System1 bus? 張凡答案是給 peak power dissipation for System1: 33*10^6*(2*10^-12*32)*2.5^2=13.2mw suppose the average capacitance for System2=C 66*10^6*C*1.8^2<13.2mw. C<61.73pF 我想問的是 括號裡面的32是怎麼出現的 麻煩版上神手大大了 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 118.171.126.162

01/28 06:53, , 1F
bus of 32bits consists 32 lines
01/28 06:53, 1F

01/28 07:01, , 2F
我算的答案是C<=0.9645pf
01/28 07:01, 2F
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