Datasheet
Intel
®
Xeon
®
Processor 5500 Series Datasheet, Volume 1 31
Intel® Xeon® Processors 5500 Series Electrical Specifications
2. This table is intended to aid in reading discrete points on Figure 2-3.
3. The loadlines specify voltage limits at the die measured at the VCC_SENSE and VSS_SENSE lands. Voltage
regulation feedback for voltage regulator circuits must also be taken from processor VCC_SENSE and
VSS_SENSE lands. Please refer to the appropriate platform design guide for further details on regulator and
decoupling implementations.
4. Processor core current (I
CC
) ranges are valid up to I
CC_MAX
of the processor SKU as defined in Table 2-8,
“Voltage and Current Specifications”.
Notes:
1. The V
CC_MIN
and V
CC_MAX
loadlines represent static and transient limits. Please see Section 2.6.1 for V
CC
overshoot specifications.
2. Refer to Table 2-9 for V
CC
Static and Transient Tolerance.
3. The loadlines specify voltage limits at the die measured at the VCC_SENSE and VSS_SENSE lands. Voltage
regulation feedback for voltage regulator circuits must also be taken from processor VCC_SENSE and
VSS_SENSE lands. Please refer to the appropriate platform design guide for further details on regulator and
decoupling implementations.
4. Processor core current (I
CC
) ranges are valid up to I
CC_MAX
of the processor SKU as defined in Table 2-8,
“Voltage and Current Specifications”.
2.6.1 V
CC
Overshoot Specifications
The Intel Xeon Processor 5500 Series can tolerate short transient overshoot events
where V
CC
exceeds the VID voltage when transitioning from a high-to-low current load
condition. This overshoot cannot exceed VID + V
OS_MAX
(V
OS_MAX
is the maximum
allowable overshoot above VID). These specifications apply to the processor die voltage
as measured across the VCC_SENSE and VSS_SENSE lands.
Figure 2-3. V
CC
Static and Transient Tolerance Loadlines
1,2,3,4
VID - 0.000
VID - 0.020
VID - 0.040
VID - 0.060
VID - 0.080
VID - 0.100
VID - 0.120
VID - 0.140
VID - 0.160
VID - 0.180
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
Icc [A]
Vcc [V]
Table 2-10. V
CC
Overshoot Specifications
Symbol Parameter Min Max Units Figure Notes
V
OS_MAX
Magnitude of V
CC
overshoot above VID - 50 mV 2-4
T
OS_MAX
Time duration of V
CC
overshoot above VID - 25 µs 2-4