80546KF Datasheet, PDF (30/138 Pages) Intel Corporation – 64-bit Intel Xeon Processor MP with up to 8MB L3 Cache

Electrical Specifications
11.These parameters are based on design characterization and are not tested.
12.V_TT must be provided via a separate voltage source and must not be connected to V_CC.
13.These specifications are measured at the package pin.
14.Baseboard bandwidth is limited to 20 MHz.
15.This specification refers to a single processor with R_TT enabled.
16.This specification refers to a single processor with R_TT disabled.
17.The voltage specification requirements are measured across the V_{CC_CACHE_SENSE} and V_{SS_CACHE_SENSE} pins at the socket
with a 100 MHz bandwidth oscilloscope, 1.5 pF maximum probe capacitance, and 1 MΩ minimum impedance. The maximum
length of ground wire on the probe should be less than 5 mm. Ensure external noise from the system is not coupled into the
scope probe.
18.This specification represents the V_CC reduction due to each VID transition. See Section 2.2.
19.This specification refers to the total reduction of the load line due to VID transitions below the specified VID.
20.I_{CC_TDC} is the sustained (DC equivalent) current that the processor is capable of drawing indefinitely and should be used for the
voltage regulator temperature assessment. The voltage regulator is responsible for monitoring its temperature and asserting the
necessary signal to inform the processor of a thermal excursion. The processor is capable of drawing I_{CC_TDC} indefinitely. Refer
to Figure 2-3 for further details on the average processor current draw over various time durations. This parameter is based on
design characterization and is not tested.
21.I_TT may draw up to 5A prior to power good assertion.
Figure 2-3. Processor Load Current vs. Time
155
150
145
140
135
130
125
0.01
0.1
1
10
Time Duration (s)
100
1000
NOTES:
1. Processor or voltage regulator thermal protection circuitry should not trip for load currents greater than
I_{CC_TDC}.
2. Not 100% tested. Specified by design characterization.
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64-bit Intel^® Xeon™ Processor MP with up to 8MB L3 Cache Datasheet