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Intel® Xeon® Processor 7400 Series Datasheet 27

Electrical Specifications

Notes:

1. Unless otherwise noted, all specifications in this table apply to all processors.

2. The voltage specification requirements are measured across the VCC_SENSE and VSS_SENSE pins and

with an oscilloscope set to 100 MHz bandwidth, 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 in the scope probe.

3. The processor must not be subjected to any static V

level that exceeds the V

CC_MAX

associated with any

particular current. Failure to adhere to this specification can shorten processor lifetime.

4. I

CC_MAX

specification is based on maximum V

loadline Refer to Figure 2-4 for details. The processor is

capable of drawing I

CC_MAX

for up to 10 ms. Refer to Figure 2-1, Figure 2-2 or Figure 2-3for further details

on the average processor current draw over various time durations.

5. FMB is the flexible motherboard guideline. These guidelines are for estimation purposes only. See

Section 2.11.1 for further details on FMB guidelines.

6. This specification represents the total current for GTLREF_DATA_MID, GTLREF_DATA_END,

GTLREF_ADD_MID, and GTLREF_ADD_END.

7. V

must be provided via a separate voltage source and must not be connected to V

. This specification is

measured at the pin.

8. Minimum VCC and maximum ICC are specified at the maximum processor case temperature (TCASE)

shown in Figure 6-1.

9. This specification refers to the total reduction of the load line due to VID transitions below the specified

VID.

10. Individual processor VID values may be calibrated during manufacturing such that two devices at the same

frequency may have different VID settings.

11. This specification applies to the VCCPLL pin.

12. Baseboard bandwidth is limited to 20 MHz.

13. 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. Please see the applicable design guidelines for further details. The processor is capable of

drawing I

CC_TDC

indefinitely. Refer to Figure 2-6 for further details on the average processor current draw

over various time durations. This parameter is based on design characterization and is not tested.

14. This is the maximum total current drawn from the V

plane by the processor with R

enabled. This

specification does not include the current coming from on-board termination (R

), through the signal line.

Refer to the appropriate platform design guide and the Voltage Regulator Design Guidelines to determine

the total I

drawn by the system. This parameter is based on design characterization and is not tested.

15. I

CC_RESET

is specified while PWRGOOD and RESET# are asserted. Refer to Table 2-22 for the PWRGOOD to

RESET# de-assertion time specification and Table 2-23 for the RESET# Pulse Width specification.

TCC

for a Intel® Xeon®

X7460 Processor during

active thermal control circuit

(TCC)

150 A

TCC

for a Intel® Xeon®

Processor E7400 Series

during active thermal control

circuit (TCC)

130 A

TCC

for an 6-core Intel®

Xeon® Processor L7400

Series during active thermal

control circuit (TCC)

85 A

TCC

for an 4-core Intel®

Xeon® Processor L7400

Series during active thermal

control circuit (TCC)

65 A

Table 2-9. Voltage and Current Specifications (Sheet 3 of 3)

Symbol Parameter Min Typ Max Unit Notes

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 135 136

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