Shayle Hirschman ([email protected])
Wed, 14 Jul 1999 15:55:47 +0000

Dr. Johnson,

Are you saying that using two flip flops in series with a clock whose
frequency is too fast to include the extra time allotted for meta state
resolution works successfully since the probability of the output of the
first flip flop changing during the vulnerable input time of the second
flip flop is very low?

That's an interesting idea which, if true, can enable the the clock
frequency to stay optimally high.

I had thought that the meta state of the first flip flop was an unsafe time
to clock into the second flip flop. But you say there aren't any
oscillations and that it will be a valid high or low during the meta state,
possibly changing again at the end of its meta state when it makes its
final decision.


Shayle I. Hirschman, Senior Engineer
Managing Director
Digital Design Solutions
[email protected]
Phone 901/759-1802 Fax 901/759-2324

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