Problem

TABLE Sequencing element parameters Setup Timeclk-to-Q DelayD-to-Q DelayContamination Dela...

TABLE Sequencing element parameters

 Setup Timeclk-to-Q DelayD-to-Q DelayContamination DelayHold Time
Flip-Flops65 ps50 psn/a35 ps30 ps
Latches25 ps50 ps40 ps35 ps30 ps

Suppose one cycle of logic is particularly critical and the next cycle is nearly empty. Determine the maximum amount of time the first cycle can borrow into the second for each of the following sequencing styles. Assume there is zero clock skew and that the cycle time is 500 ps.

a) Flip-flops

b) Two-phase transparent latches with 50% duty cycle clocks

c) Two-phase transparent latches with 60 ps of nonoverlap between phases

d) Pulsed latches with 80 ps pulse width

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Solutions For Problems in Chapter 10