Specifications

Intel
®
810E2 Chipset Platform
R
180 Design Guide
Table 50. Flexible Processor Voltage and Current Guidelines for 2.0 V Processors
1
Symbol Parameter Min Typ Max Unit Notes
Vcc
CORE
VCC for processor core 2.00 V 1, 3
Baseboard
Tolerance,
Static
processor core voltage static tolerance at
processor pins
0.089 0.100 V 2, 3
Baseboard
Tolerance,
Transient
processor core voltage transient tolerance
level at processor pins
0.144 0.144 V 2, 3
ICCCORE ICC for processor core 15.6 A 1, 4, 5, 7
ISGnt ICC Stop-Grant for processor core 0.8 A 6
dICCCORE/dt Power supply current slew rate 240 A/µS 8, 9
NOTES:
1. Vcc
CORE
and Icc
CORE
supply the processor core.
2. Use the Typical Voltage specification with the Tolerance specifications to provide correct voltage regulation to
the processor.
3. These are the tolerance requirements, across a 20 MHz bandwidth at the top of the PPGA package. Vcc
CORE
must return to within the static voltage specification within 100 us after a transient event; see the VRM 8.4 DC-
DC Converter Specification for further details.
4. Max ICC measurements are measured at Vcc maximum voltage, under maximum signal loading conditions.
5. Voltage regulators may be designed with a minimum equivalent internal resistance to ensure that the output
voltage, at maximum current output, is no greater than the nominal (i.e., typical) voltage level of Vcc
CORE
(Vcc
CORE_TYP
). In this case, the maximum current level for the regulator, Icc
CORE_REG
, can be reduced from the
specified maximum current Icc
CORE _MAX
and is calculated by the equation:
Icc
CORE_REG
= Icc
CORE_MAX
X Vcc
CORE_TYP
/ (Vcc
CORE_TYP
+ Vcc
CORE
Tolerance, Transient)
6. The current specified is also for AutoHALT state.
7. Maximum values are specified by design/characterization at maximum Vcc
CORE
.
8. Based on simulation and averaged over the duration of any change in current. Use to compute the maximum
inductance tolerable and reaction time of the voltage regulator. This parameter is not tested.
9. dICC/dt specifications are specified at the processor pins.