3. A generic sequential circuit is given below. The circuit's inputs are Input, CLK and CLR. The circuit's output is Output. Flip-flops have telk-Q delay, taetup and thold time requirements. CLK signal has the clock skew value of CLK kew. The combinational circuit has the propagation delay of tpd. teLK-Q=100ps, tsetup = 100ps, thold = 75ps, tpd = 400ps and clock skew of CLK,kew = 50ps. Input D Output Combinational Circuit CLR Clock Skew CLK CLR Calculate the minimum cycle time and the maximum frequency at which thecircuit can operate. b. Calculate the setup time slack when the circuit operates at 1.25GHZ frequency. Calculate the hold time slack when the circuit operates at 1.25GHZ frequency. d. а. с. Write the timing constraint for the clock signal for Xilinx FPGA devices whenthe circuit operating frequency is set to 1.5GHZ with %40 duty cycle.

Electric Motor Control
10th Edition
ISBN:9781133702818
Author:Herman
Publisher:Herman
Chapter22: Sequence Control
Section: Chapter Questions
Problem 6SQ: Draw a symbol for a solid-state logic element AND.
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3. A generic sequential circuit is given below. The circuit's inputs are Input, CLK and CLR. The
circuit's output is Output. Flip-flops have tCLK-Q delay, tuetup and thold time requirements. CLK
signal has the clock skew value of CLKskew. The combinational circuit has the propagation delay
of tpd. TCLK-Q=100ps, tsetup = 100ps, thold = 75ps, tạd = 400ps and clock skew of CLKskew = 50ps.
Input
Output
Combinational
Circuit
CLR
CLR
Clock Skew
CLK
CLR
Calculate the minimum cycle time and the maximum frequency at which thecircuit
can operate.
b. Calculate the setup time slack when the circuit operates at 1.25GHZ frequency.
Calculate the hold time slack when the cireuit operates at 1.25GHZ frequency.
Write the timing constraint for the clock signal for Xilinx FPGA devices whenthe
circuit operating frequency is set to 1.5GHZ with %40 duty cycle.
a.
с.
d.
Transcribed Image Text:3. A generic sequential circuit is given below. The circuit's inputs are Input, CLK and CLR. The circuit's output is Output. Flip-flops have tCLK-Q delay, tuetup and thold time requirements. CLK signal has the clock skew value of CLKskew. The combinational circuit has the propagation delay of tpd. TCLK-Q=100ps, tsetup = 100ps, thold = 75ps, tạd = 400ps and clock skew of CLKskew = 50ps. Input Output Combinational Circuit CLR CLR Clock Skew CLK CLR Calculate the minimum cycle time and the maximum frequency at which thecircuit can operate. b. Calculate the setup time slack when the circuit operates at 1.25GHZ frequency. Calculate the hold time slack when the cireuit operates at 1.25GHZ frequency. Write the timing constraint for the clock signal for Xilinx FPGA devices whenthe circuit operating frequency is set to 1.5GHZ with %40 duty cycle. a. с. d.
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