Intel III Xeon 800 MHz 80526KZ800256 User Manual
Product codes
80526KZ800256
SIGNAL QUALITY
38
pads
.
Overshoot/Undershoot shown in Figure 14 is for illustrative purposes only to help explain Ringback and Settling
Limit. Refer to Figure 13 for an illustration of Overshoot/Undershoot specifications.
U n d e rs h o o t
O v e rs h o o t
S e ttlin g L im it
S e ttlin g L im it
R is in g -E d g e
R in g b a c k
R in g b a c k
F a llin g -E d g e R in g b ac k
V
L O
V
S S
T im e
V =HI
V
C C 2.5
V o lta g e
RINGBACK
Figure 14. Non-AGTL+ Overshoot/Undershoot, Settling Limit, and Ringback
4.3.1 2.5V Signal Overshoot/Undershoot Guidelines
The Overshoot/Undershoot guideline limits transitions beyond VCC or VSS due to fast signal edge rates. Refer to Figure
14 for an illustration of Overshoot/Undershoot specifications for non-AGTL+ signals. The processor may be damaged if
Overshoot/Undershoot specifications are not met. The Overshoot/Undershoot specification is shown in Table 26.
14 for an illustration of Overshoot/Undershoot specifications for non-AGTL+ signals. The processor may be damaged if
Overshoot/Undershoot specifications are not met. The Overshoot/Undershoot specification is shown in Table 26.
Table 27. 2.5V Tolerant Signal Group Overshoot/Undershoot at the Processor Core Pins
1,2,3,4,5,6,7,8,9
Overshoot/Undershoot
Max Pulse Duration (nS)
Magnitude
AF = 0.01
AF = 0.1
AF = 1
2.3 60
7.6
0.76
2.25 60
14.8
1.48
2.2 60
27.2
2.7
2.15 60
50
5
2.1 60
60
9.1
2.05 60
60
16.4
2.0 60
60
30
NOTES: