The definition of noise propagation and driver weakening

[jagannathrao]

Noise propagation

Hi,

Define Noise Propagation , and Driver weakening.

Regards
Jagan

 

[linuxluo]

Re: Noise propagation

hi,
noise propogation means after noise tranfer a gate, this new noise will weaken. and maybe ignorde before arriving register input . so this noise can be ignored .
driver weaken means is weaken the agressive driver so that avoiding crosstalk.

 

[jagannathrao]

Re: Noise propagation

Hi ,
i hope u r partially right.
but noise propagation , will affact to functional failure.
can u elabarate this santence.

 

[smith_kang]

Re: Noise propagation

Hi,
You can imagine a scenario like when the victim net is not having any driving voltage, a noise voltage gets induced into it due to capacitive coupling with the aggressors. If this noise voltage exceeds the logic threshold voltage, a logic transition may be caused on the gate begin driven by the victim line which can cause functional failures in the circuit.

Hope this will answer your query.

Thanks

 

[arun_prabu]

Re: Noise propagation

Even if the noise amplitude is above the threshold voltage, it doesn't propagate if the width of the noise pulse is less.