300 Datasheet, PDF (19/95 Pages) DB Lectro Inc – SCREW TYPE SERIES

Electrical Specifications
NOTES:
1. Unless otherwise noted, all specifications in this table are based on estimates and simulations or empirical data.
These specifications will be updated with characterized data from silicon measurements at a later date.
2. Adherence to the voltage specifications for the processor are required to ensure reliable processor operation.
3. Each processor is programmed with a maximum valid voltage identification value (VID) that 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.
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 5 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} is specified at V_{CC_MAX}
8. The current specified is also for AutoHALT State.
9. I_CC Stop-Grant is specified at V_{CC_MAX}.
10.The maximum instantaneous current the processor will draw while the thermal control circuit is active (as
indicated by the assertion of PROCHOT#) is the same as the maximum I_CC for the processor.
11.V_TT must be provided via a separate voltage source and not be connected to V_CC. This specification is measured
at the land.
12.Baseboard bandwidth is limited to 20 MHz.
13.This is maximum total current drawn from V_TT plane by only the processor. This specification does not include
the current coming from R_TT (through the signal line). Refer to the Voltage Regulator-Down (VRD) 10.1 Design
Guide For Desktop and Transportable LGA775 Socket to determine the total I_TT drawn by the system.
14.This is a steady-state I_TT current specification that is applicable when both V_TT and V_CC are high.
15.This is a power-up peak current specification that is applicable when V_TT is high and V_CC is low.
Datasheet
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