For the given DFFs:

$$cQ ranges from $0\mathrm{.}6$ ns to $1\mathrm{.}2$ ns

Setup time $$su $=0\mathrm{.}5$ ns

Hold time $$h $=0\mathrm{.}3$ ns

Skew values $=2=1$ ns$,3=0\mathrm{.}5$ ns

The gate delays are:

AND gate $=1$ ns

XOR gate $=1\mathrm{.}5$ ns

NOT gate $=0\mathrm{.}7$ ns

a$.$ How fast can the circuit be clocked? $(20$ points$)$

b$.$ Does the circuit have any hold time violations? $(20$ points$)$

c$.$ If yes, then modify the skew values to meet hold times. If not, modify the skew values to

violate hold times. $(15$ points$)$