Datasheet
Datasheet 19
Electrical Specifications
2.6.2 DC Voltage and Current Specification
NOTES:
1. Unless otherwise noted, all specification in this table are based on estimates and
simulation or empirical data. These specifications will be updated with characterized data
from silicon measurements at a later date.
2. Adherence to the voltage specification for the processor are required to ensure reliable
processor operation.
3. Each processor is programmed with a maximum valid voltage identification value (VID),
which is set at manufacturing and can not be altered. Individual maximum VID values are
calibrated during manufacturing such that two processors at the same frequency may have
different settings within the VID range. Please note this differs from the VID employed by
the processor during a power management event (Thermal Monitor 2).
4. These voltages are targets only. A variable voltage source should exist on systems in the
event that a different voltage is required. See Section 2.3 and Table 2 for more
information.
5. The voltage specification requirements are measured across VCC_SENSE and VSS_SENSE
lands at the socket with a 100 MHz bandwidth oscilloscope, 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 into
the oscilloscope probe.
6. Refer to Table 6 and Figure 1 for the minimum, typical, and maximum V
CC
allowed for a
given current. The processor should not be subjected to any V
CC
and I
CC
combination
wherein V
CC
exceeds V
CC_MAX
for a given current.
7. I
CC_MAX
specification is based on the V
CC_MAX
loadline. Refer to Figure 1f or details.
Table 5. Voltage and Current Specifications
Symbol Parameter Min Typ Max Unit Notes
2, 15
VID Range VID 1.0000 — 1.3375 V 3
V
CC
Processor Number
450
440
430
420
Core V
CC
2.2 GHz
2.0 GHz
1.8 GHz
1.6 GHz
Refer to Table 6 and
Figure 1
V4, 5, 6
V
CC_BOOT
Default V
CC
voltage for initial power up — 1.10 — V
V
CCPLL
PLL V
CC
- 5% 1.50 + 5%
I
CC
Processor Number
450
440
430
420
I
CC
for
775_VR_CONFIG_06
2.2 GHz
2.0 GHz
1.8 GHz
1.6 GHz
——
35
35
35
35
A7
V
TT
FSB termination voltage
(DC + AC specifications)
1.14 1.20 1.26 V 8
VTT_OUT_LEFT
and
VTT_OUT_RIGHT
I
CC
DC Current that may be drawn from
VTT_OUT_LEFT and VTT_OUT_RIGHT per pin
——580mA9
I
TT
I
CC
for V
TT
supply before V
CC
stable
I
CC
for V
TT
supply after V
CC
stable
——
4.5
4.6
A10
I
CC_VCCPLL
I
CC
for PLL land ——130mA
I
CC_GTLREF
I
CC
for GTLREF — — 200 μA