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Engin112-F07-L26-seq-analysis

# Engin112-F07-L26-seq-analysis - Engin112 Lecture 26...

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1 Maciej Ciesielski Department of Electrical and Computer Engineering 11/05/2007 Engin112 – Lecture 26 Sequential Circuit Analysis 11/05/2007 Engin 112 - Intro to ECE 2 This Lecture ± Analysis of sequential circuits y State equations y State table y State diagram

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2 11/05/2007 Engin 112 - Intro to ECE 3 Analysis of Sequential Circuits ± Behavior of clocked sequential circuit determined by y Inputs y Outputs y State of flip-flops ± Analysis process y Consider all combinations of » Inputs » Flip-flop states y Determine next state and output of circuit ± Methods y State equations y State table y State diagram 11/05/2007 Engin 112 - Intro to ECE 4 Example Circuit ± Sequential circuit y Input: x y Output: y y Flip-flops: » 2 D-type A and B ± When is y=1 ? y Very difficult to answer y Systematic analysis necessary
3 11/05/2007 Engin 112 - Intro to ECE 5 State Equations ± State equation specifies next state y Function of current state and inputs ± State equation for flip-flops: y A(t+1) = A(t) x(t) + B(t) x(t)

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Engin112-F07-L26-seq-analysis - Engin112 Lecture 26...

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