Datasheet

Overshoot/Undershoot Pulse Duration
Pulse duration describes the total amount of time that an overshoot/undershoot event
exceeds the overshoot/undershoot reference voltage. The total time could encompass
several oscillations above the reference voltage. Multiple overshoot/undershoot pulses
within a single overshoot/undershoot event may need to be measured to determine
the total pulse duration.
Note: Oscillations below the reference voltage cannot be subtracted from the total
overshoot/undershoot pulse duration.
Figure 11. Maximum Acceptable Overshoot/Undershoot Waveform
V
SS
Over Shoot
Under Shoot
Over Shoot
Duration
Under Shoot
Duration
Activity Factor
Activity factor (AF) describes the frequency of overshoot (or undershoot) occurrence
relative to a clock. Since the highest frequency of assertion of any common clock
signal is every other clock, an AF = 0.1 indicates that the specific overshoot (or
undershoot) waveform occurs every other clock cycle.
The specification provided in the table shows the maximum pulse duration allowed for
a given overshoot/undershoot magnitude at a specific activity factor. Each table entry
is independent of all others, meaning that the pulse duration reflects the existence of
overshoot/undershoot events of that magnitude ONLY. A platform with an overshoot/
undershoot that just meets the pulse duration for a specific magnitude where the AF <
0.1, means that there can be no other overshoot/undershoot events, even of lesser
magnitude (note that if AF = 0.1, then the event occurs at all times and no other
events can occur).
Intel
®
Xeon
®
Processor E5-1600 and E5-2600 v3 Product Families—Electrical Specifications
Intel
®
Xeon
®
Processor E5-1600 and E5-2600 v3 Product Families, Volume 1 of 2, Electrical
Datasheet September 2014
46 Order No.: 330783-001