Re: Bus Clamp vs Dynamic Clamp

Greg:

Now I understand, and your point of view is correct.

The [GND Pulse Table] is an offset from the [GND Clamp Reference]
voltage (normally 0 V) that gets started at the the time that
the pin voltage passes through V_trigger_f. That is
equivalent to locating Vpin - Vpulse on the table and dumping
that current into the pin.

Bob Ross
Mentor Graphics
 

gedlund@us.ibm.com wrote:
>
> [GREG]
> > So if I'm a simulator and I notice that Vpin
> > has tripped V_trigger_f, I calculate Vpin-Vpulse and dump the current
> that
> > I find at the corresponding entry in [GND Clamp]?
>
> [BOB] I do not understand this question.
>
> [GREG]
> I was trying to understand the relationship between [GND Clamp] and [GND
> Pulse Table]. It seems to me that [GND Pulse Table] is providing a link
> between the voltage at the device pin and the current in the [GND Clamp]
> table. The links seems to be an offset voltage from the pin voltage that
> can change from one timepoint to the next as defined by the VT table in
> [GND Pulse Table]. Furthermore, the VT table isn't activated until the pin
> voltage crosses V_trigger_r/f. Am I understanding this correctly?
>
> Greg Edlund
> Advisory Engineer, Critical Net Analysis
> IBM
> 3650 Hwy. 52 N, Dept. HDC
> Rochester, MN 55901
> gedlund@us.ibm.com
Received on Mon Mar 13 11:47:47 2000