Intel AT80604004878AA Manuale Utente
Intel® Xeon® Processor 7500 Datasheet, Volume 1
17
Electrical Specifications
The Intel® Xeon® processor 7500 series
provides the ability to operate while
transitioning to an adjacent VID and its associated processor core voltage (Vcc). This
will represent a DC shift in the load line. It should be noted that a low-to-high or high-
to-low voltage state change may result in as many VID transitions as necessary to
reach the target core voltage. Transitions above the maximum specified VID are not
permitted.
will represent a DC shift in the load line. It should be noted that a low-to-high or high-
to-low voltage state change may result in as many VID transitions as necessary to
reach the target core voltage. Transitions above the maximum specified VID are not
permitted.
includes VID step sizes and DC shift ranges. Minimum and
maximum voltages must be maintained as shown in
The VRM or EVRD utilized must be capable of regulating its output to the value defined
by the new VID. DC specifications for dynamic VID transitions are included in
by the new VID. DC specifications for dynamic VID transitions are included in
and
. Refer to the Voltage
Regulator Module (VRM) and Enterprise Voltage Regulator-Down (EVRD) 11.1 Design
Guidelines for further details.
Guidelines for further details.
The VIO_VID[4:1] pins identify encoding that determine the voltage to be supplied by
the VR 11.1 to the socket Vio voltage regulators. In all cases, when reading from
the VR 11.1 to the socket Vio voltage regulators. In all cases, when reading from
, assume VID7=0, VID6=1, VID5=0, and VID0=0. Note that all Intel® Xeon®
processor 7500 series SKUs will have the same setting.
Power source characteristics must be guaranteed to be stable whenever the supply to
the voltage regulator is stable.
the voltage regulator is stable.
Table 2-2.
Voltage Identification Definition (Sheet 1 of 5)
VID7
VID6
VID5
VID4
VID3
VID2
VID1
VID0
V
CC_MAX
0
0
0
0
0
0
0
0
OFF
0
0
0
0
0
0
0
1
OFF
0
0
0
0
0
0
1
0
1.60000
0
0
0
0
0
0
1
1
1.59375
0
0
0
0
0
1
0
0
1.58750
0
0
0
0
0
1
0
1
1.58125
0
0
0
0
0
1
1
0
1.57500
0
0
0
0
0
1
1
1
1.56875
0
0
0
0
1
0
0
0
1.56250
0
0
0
0
1
0
0
1
1.55625
0
0
0
0
1
0
1
0
1.55000
0
0
0
0
1
0
1
1
1.54375
0
0
0
0
1
1
0
0
1.53750
0
0
0
0
1
1
0
1
1.53125
0
0
0
0
1
1
1
0
1.52500
0
0
0
0
1
1
1
1
1.51875
0
0
0
1
0
0
0
0
1.51250
0
0
0
1
0
0
0
1
1.50625
0
0
0
1
0
0
1
0
1.50000
0
0
0
1
0
0
1
1
1.49375
0
0
0
1
0
1
0
0
1.48750
0
0
0
1
0
1
0
1
1.48125
0
0
0
1
0
1
1
0
1.47500
0
0
0
1
0
1
1
1
1.46875
0
0
0
1
1
0
0
0
1.46250