Intel III Xeon 800 MHz 80526KZ800256 User Manual
Product codes
80526KZ800256
SIGNAL QUALITY
37
1.
Unless otherwise noted, all guidelines in this table apply to all processor frequencies.
2.
Overshoot Magnitude and Undershoot Magnitude are absolute values and should never exceed 2.3V under any circumstances.
3.
Overshoot is measured relative to VSS.
4.
Undershoot is measured relative to VTT.
5.
Overshoot/Undershoot Pulse Duration is measured relative to 1.635V.
6.
Ringback below VTT cannot be subtracted from Overshoots/Undershoots.
7.
Lesser Undershoot does not allocate longer or larger Overshoot. Lesser Overshoot does not allocate longer or larger Undershoot.
8.
OEM's are encouraged to follow Intel provided layout guidelines.
9.
All values specified by design characterization.
10. Specifications apply regardless of whether the processor is driving or receiving.
Figure 13. Maximum Acceptable Overshoot/Undershoot Waveform
1,2,3,4,5,6,7,8
NOTES:
1. Overshoot Magnitude and Undershoot Magnitude are absolute values and should never exceed 2.3V under any circumstances.
2. Overshoot is measured relative to V
SS
.
3. Undershoot is measured relative to V
TT.
4. Overshoot/Undershoot Pulse Duration is measured relative to 1.635V.
5. Ringback below V
TT
cannot be subtracted from Overshoots/Undershoots.
6. Lesser Undershoot does not allocate longer or larger Overshoot. Lesser Overshoot does not allocate longer or larger Undershoot.
7. OEM's are encouraged to follow Intel provided layout guidelines.
8. All values specified by design characterization.
4.3 Non-GTL+ Signal Quality Specifications
There are three signal quality parameters defined for non-AGTL+ signals: Overshoot/Undershoot, Ringback, and Settling
Limit. All three signal quality parameters are shown in Figure 14 for the non-AGTL+ signal group at the processor core
Limit. All three signal quality parameters are shown in Figure 14 for the non-AGTL+ signal group at the processor core