Intel G870 CM8062307260115 User Manual
Product codes
CM8062307260115
Datasheet, Volume 1
67
Electrical Specifications
7.5
Graphics Voltage Identification (GFX_VID)
A dedicated voltage regulator is required to deliver voltage to the integrated graphics
core. The integrated graphics will use seven voltage identification pins, GFX_VID[6:0],
to set the nominal operating voltage. The GFX_VID specification for the processor is
defined by the Voltage Regulator Down (VRD) 11.0 Design Guidelines.
core. The integrated graphics will use seven voltage identification pins, GFX_VID[6:0],
to set the nominal operating voltage. The GFX_VID specification for the processor is
defined by the Voltage Regulator Down (VRD) 11.0 Design Guidelines.
specifies the voltage level corresponding to the state of the GFX_VID signals. Refer to
for the DC specifications for these signals.
Individual processor GFX_VID values may be set during manufacturing so that two
devices at the same core frequency may have different default GFX_VID settings. This
is shown in the GFX_VID range values in
devices at the same core frequency may have different default GFX_VID settings. This
is shown in the GFX_VID range values in
A low-to-high or high-to-low voltage state change will result in as many GFX_VID
transitions as necessary to reach the target voltage. The voltage regulator used must
be capable of regulating its output to the value defined by the new GFX_VID values
issued. Transitions above the maximum specified VID are not permitted. One GFX_VID
transition occurs in 5 us. Minimum and maximum voltages must be maintained.
transitions as necessary to reach the target voltage. The voltage regulator used must
be capable of regulating its output to the value defined by the new GFX_VID values
issued. Transitions above the maximum specified VID are not permitted. One GFX_VID
transition occurs in 5 us. Minimum and maximum voltages must be maintained.
DC specifications for dynamic GFX_VID transitions are included in
and
. See the Voltage Regulator Down (VRD) 11.0 Design Guidelines for further
details.
Table 7-1.
VRD 11.1/11.0 Voltage Identification Definition (Sheet 1 of 3)
VID
7
VID
6
VID
5
VID
4
VID
3
VID
2
VID
1
VID
0
V
CC_MAX
VID
7
VID
6
VID
5
VID
4
VID
3
VID
2
VID
1
VID
0
V
CC_MAX
0
0
0
0
0
0
0
0
OFF
0
1
0
1
1
0
1
1
1.04375
0
0
0
0
0
0
0
1
OFF
0
1
0
1
1
1
0
0
1.03750
0
0
0
0
0
0
1
0
1.60000
0
1
0
1
1
1
0
1
1.03125
0
0
0
0
0
0
1
1
1.59375
0
1
0
1
1
1
1
0
1.02500
0
0
0
0
0
1
0
0
1.58750
0
1
0
1
1
1
1
1
1.01875
0
0
0
0
0
1
0
1
1.58125
0
1
1
0
0
0
0
0
1.01250
0
0
0
0
0
1
1
0
1.57500
0
1
1
0
0
0
0
1
1.00625
0
0
0
0
0
1
1
1
1.56875
0
1
1
0
0
0
1
0
1.00000
0
0
0
0
1
0
0
0
1.56250
0
1
1
0
0
0
1
1
0.99375
0
0
0
0
1
0
0
1
1.55625
0
1
1
0
0
1
0
0
0.98750
0
0
0
0
1
0
1
0
1.55000
0
1
1
0
0
1
0
1
0.98125
0
0
0
0
1
0
1
1
1.54375
0
1
1
0
0
1
1
0
0.97500
0
0
0
0
1
1
0
0
1.53750
0
1
1
0
0
1
1
1
0.96875
0
0
0
0
1
1
0
1
1.53125
0
1
1
0
1
0
0
0
0.96250
0
0
0
0
1
1
1
0
1.52500
0
1
1
0
1
0
0
1
0.95626
0
0
0
0
1
1
1
1
1.51875
0
1
1
0
1
0
1
0
0.95000
0
0
0
1
0
0
0
0
1.51250
0
1
1
0
1
0
1
1
0.94375
0
0
0
1
0
0
0
1
1.50625
0
1
1
0
1
1
0
0
0.93750
0
0
0
1
0
0
1
0
1.50000
0
1
1
0
1
1
0
1
0.93125
0
0
0
1
0
0
1
1
1.49375
0
1
1
0
1
1
1
0
0.92500
0
0
0
1
0
1
0
0
1.48750
0
1
1
0
1
1
1
1
0.91875
0
0
0
1
0
1
0
1
1.48125
0
1
1
1
0
0
0
0
0.91250