Digital VLSI System Design and Design Automation
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ELEC5160 Digital VLSI System Design and Design Automation
1. [6 points]
The timing parameters for the following circuit are given below:
tc2q = 1ns
tlogic = 4ns
tsu = 0.5ns
tc2q,cd = 0.1ns
tc2q,logic = 0.15ns
Skew between C1 and C2 = 0.25ns
(a) What is the maximum frequency at which this design can be clocked?
(b) What is the setup slack in this design?
(c) If the skew is changed to -0.25ns, what value of hold time would satisfy this
system?
C2
C1
5. [6 points]
The following circuit computes the multiplication of an input x with a constant
number (be aware of the minus sign in the figure). Find the binary
representation (0 and 1 only) of the constant number and what is the
corresponding decimal value?
6. [6 points]
Using the Booth’s multiplication algorithm, show the following multiplication:
100100 * 011000.