80546KF Datasheet, PDF (33/138 Pages) Intel Corporation – 64-bit Intel Xeon Processor MP with up to 8MB L3 Cache

Figure 2-5. V_CC and V_CACHE Overshoot Example Waveform
Electrical Specifications
V_OS: Peak maximum
overshoot identified
during validation
Time
Overshoot Waveform VID/CVID Reference
T_OS(OS time above
VID or CVID): Time
from initial VID or
CVID crossing to final
crossing of VID or
CVID
2.10.3 Die Voltage Validation
Overshoot events from application testing on the processor must meet the specifications in
Table 2-11 when measured across the V_CCSENSE and V_SSSENSE pins. Overshoot events that are
< 10 ns in duration may be ignored. These measurements of processor die level overshoot should
be taken with a 100 MHz bandwidth limited oscilloscope.
Table 2-12. Front Side Bus Differential BCLK Specifications
Symbol
Parameter
VL
Input Low Voltage
VH
Input High Voltage
VCROSS(abs)
Absolute Crossing
Point
VCROSS(rel)
Relative Crossing
Point
∆ VCROSS
Range of Crossing
Point
VOV
Overshoot
VUS
Undershoot
VRBM
Ringback Margin
VTM
Threshold Margin
Min
-0.150
0.660
0.250
0.250 + 0.5*
(V_Havg - 0.700)
N/A
N/A
- 0.300
0.200
V_CROSS-0.100
Typ
0.000
0.700
N/A
N/A
N/A
N/A
N/A
N/A
Max
N/A
0.850
0.550
0.550 + 0.5*
(V_Havg - 0.700)
0.140
+ 0.300
N/A
N/A
V_CROSS+0.100
Unit Figure Notes
V
2-8
V
2-8
V
2-8,
2-9
1,7
V
2-8,
2-9
2,7,8
V
2-8,
2-9
V
2-8
3
V
2-8
4
V
2-8
5
V
2-8
6
NOTES:
1. Crossing voltage is defined as the instantaneous voltage value when the rising edge of BCLK0 is equal to the
falling edge of BCLK1.
2. V_Havg is the statistical average of the V_H measured by the oscilloscope.
3. Overshoot is defined as the absolute value of the maximum voltage.
64-bit Intel^® Xeon™ Processor MP with up to 8MB L3 Cache Datasheet
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