Intel AT80604004872AA ユーザーズマニュアル
Electrical Specifications
16
Intel® Xeon® Processor 7500 Datasheet, Volume 1
2.2
Socket Voltage Identification
The VID[7:0], CVID[7:1], and VIO_VID[4:1] pins identify encoding that determine the
voltage to be supplied by the VR to the socket Vcore, Vcache and VIO (the core, cache
& system interface voltages for the Intel® Xeon® processor 7500 series) voltage
regulators. The CoreVID and CacheVID specifications for the Intel® Xeon® processor
7500 series are defined by VR 11.1. VIO_VID specifications for the Intel® Xeon®
processor 7500 series are defined by VR 11.0.
voltage to be supplied by the VR to the socket Vcore, Vcache and VIO (the core, cache
& system interface voltages for the Intel® Xeon® processor 7500 series) voltage
regulators. The CoreVID and CacheVID specifications for the Intel® Xeon® processor
7500 series are defined by VR 11.1. VIO_VID specifications for the Intel® Xeon®
processor 7500 series are defined by VR 11.0.
For CoreVID and CacheVID, individual processor VID values may be calibrated during
manufacturing such that two devices at the same core speed may have different
default VID settings. Furthermore, any of the Intel® Xeon® processor 7500 series can
drive different VID settings during normal operation. For VIO_VID, all processors of a
given stepping will have the same values.
manufacturing such that two devices at the same core speed may have different
default VID settings. Furthermore, any of the Intel® Xeon® processor 7500 series can
drive different VID settings during normal operation. For VIO_VID, all processors of a
given stepping will have the same values.
The Voltage Identification (VID) specification for the Intel® Xeon® processor 7500
series is defined by the Voltage Regulator Module (VRM) and Enterprise Voltage
Regulator-Down (EVRD) 11.1 Design Guidelines. The voltage set by the VID signals is
the reference VR output voltage to be delivered to the processor Vcc pins. VID signals
are CMOS push/pull drivers. Please refer to
series is defined by the Voltage Regulator Module (VRM) and Enterprise Voltage
Regulator-Down (EVRD) 11.1 Design Guidelines. The voltage set by the VID signals is
the reference VR output voltage to be delivered to the processor Vcc pins. VID signals
are CMOS push/pull drivers. Please refer to
for the DC specifications for
these signals. A voltage range is provided in
and changes with frequency. The
specifications have been set such that one voltage regulator can operate with all
supported frequencies.
supported frequencies.
The Intel® Xeon® processor 7500 series
uses eight voltage identification signals,
VID[7:0], to support automatic selection of power supply voltages.
specifies
the voltage level corresponding to the state of VID[7:0]. A ‘1’ in this table refers to a
high voltage level and a ‘0’ refers to a low voltage level. If the processor socket is
empty (SKTOCC# high), or the voltage regulation circuit cannot supply the voltage that
is requested, the voltage regulator must disable itself. See the Voltage Regulator
Module (VRM) and Enterprise Voltage Regulator-Down (EVRD) 11.1 Design Guidelines
for further details.
high voltage level and a ‘0’ refers to a low voltage level. If the processor socket is
empty (SKTOCC# high), or the voltage regulation circuit cannot supply the voltage that
is requested, the voltage regulator must disable itself. See the Voltage Regulator
Module (VRM) and Enterprise Voltage Regulator-Down (EVRD) 11.1 Design Guidelines
for further details.
T
sustained
storage
The minimum/maximum device
storage temperature for a sustained
period of time.
–5
40
°C
3,4
,
5
T
abs storage
The minimum/maximum device
storage temperature beyond which
damage (latent or otherwise) may
occur when subjected to for any
length of time.
-55
125
°C
3,4,5
RH
sustained
storage
The maximum device storage relative
humidity for a sustained period of
time.
-
60% @ 24°C
3,4,5
Time
sustained
storage
A prolonged or extended period of
time; typically associated with
sustained storage conditions.
0 months
12 months
3,4,5
Notes:
1.
For functional operation, all processor electrical, signal quality, mechanical, and thermal specifications must
be satisfied.
2.
Overshoot and undershoot voltage guidelines for input, output, and I/O signals are outlined in
.
Excessive overshoot or undershoot on any signal will likely result in permanent damage to the processor.
3.
Storage conditions are applicable to storage environments only. In this scenario, the processor must not
receive a clock, and no pins can be connected to a voltage bias. Storage within these limits will not affect
the long-term reliability of the device. For functional operation, please refer to the processor case
temperature specifications.
4.
This rating applies to the processor and does not include any packaging or trays.
5.
Failure to adhere to this specification can affect the long-term reliability of the processor.
Table 2-1.
Processor Absolute Maximum Ratings (Sheet 2 of 2)
Symbol
Parameter
Min
Max
Unit
Notes
1,2