Circuit that checks clocks performance that have different phase but same frequency

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phoenix_pavan

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Someone plz help

1 . There are 2 clocks of the same frequency but with a phase difference. Design a circuit to find which clock is lagging/leading:?:
 

Digital question

If the two clocks are XOR'ed, look for the XOR'ed output 1's posedge to coincide with a clock's posedge and negedge. The other clock is lagging this one.
 

Re: Digital question

Hi,

Design a FF, Give one clock to the CLK input of FF, another clock to D input of FF
Look for the output of FF. If you get the '1' at the first clock, the clock at the D input is leading, else it is lagging.

Please let me know, if it is wrong.

Regards,
CSuresh
 

Digital question

Q will be tied to either 1 or 0 throughout, good solution
 

Re: Digital question

phoenix_pavan said:
Someone plz help

1 . There are 2 clocks of the same frequency but with a phase difference. Design a circuit to find which clock is lagging/leading:?:
Click to expand...

Use a flip-flop, one is the data and the other is the clock.
Then to check the output of flip-flop, you will get the different result.
If the result is '1', it means the data is the leading one.
Or else the clock is the leading one.
 

Re: Digital question

Thanx all of you for ur support.
It helped
 

Digital question

A DFF can do it easy .

one clock named A is used as Clock
The other is named B used as Input Data

if the output Q is "1", the B is leading,
of the output Q is "0", the A is leading.
 

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