rfndmw
Member level 4
Hi,
I am trying to calculate the max frequency of the following circuit. The given parameters are:
q. In the circuit shown, all the flip-flops are identical. If the set-up time is 2 ns, clock->Q delay is 3 ns and hold time is 1 ns, what is the maximum frequency of operation for the circuit.
According to me the answer should be :
max freq. = 1/ ( 3 + 3+ 2) = 125 MHz but the answer is given as 200 MHz which I don'd understand. Would someone please clarify what I am doing wrong?
Also, there is another problem wherein I am given a simple circuit(in black box form) with 2 inputs and one output. The 2nd input is just a complement of the first. The problem is to choose a function so that the output is of the same frequency as the input. I am not looking for an answer to this but if someone could throw some light on the approach required for this I can try to work it out. Thank you.
I am trying to calculate the max frequency of the following circuit. The given parameters are:
q. In the circuit shown, all the flip-flops are identical. If the set-up time is 2 ns, clock->Q delay is 3 ns and hold time is 1 ns, what is the maximum frequency of operation for the circuit.
Code:
[url=https://obrazki.elektroda.pl/72_1290423483.png][img]https://obrazki.elektroda.pl/72_1290423483_thumb.png[/img][/url]
max freq. = 1/ ( 3 + 3+ 2) = 125 MHz but the answer is given as 200 MHz which I don'd understand. Would someone please clarify what I am doing wrong?
Also, there is another problem wherein I am given a simple circuit(in black box form) with 2 inputs and one output. The 2nd input is just a complement of the first. The problem is to choose a function so that the output is of the same frequency as the input. I am not looking for an answer to this but if someone could throw some light on the approach required for this I can try to work it out. Thank you.