3000 datasheet(26/102 Pages) INTEL

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Electrical Specifications

Dual-Core Intel® Xeon® Processor 3000 Series Datasheet

Note:

VTT supplies the PECI interface. PECI behavior does not affect VTT min/max specifications.

The leakage specification applies to powered devices on the PECI bus.

The input buffers use a Schmitt-triggered input design for improved noise immunity.

Table 2-13. CMOS Signal Group DC Specifications

Symbol

Parameter

Min

Max

Unit

Notes1

Notes:

1. Unless otherwise noted, all specifications in this table apply to all processor frequencies.

VIL

Input Low Voltage

-0.10

VTT * 0.30

2, 3

2. VIL is defined as the voltage range at a receiving agent that will be interpreted as a logical low value.

3. The VTT referred to in these specifications refers to instantaneous VTT.

VIH

Input High Voltage

VTT * 0.70

VTT + 0.10

3, 4, 5

4. VIH is defined as the voltage range at a receiving agent that will be interpreted as a logical high value.

5. VIH and VOH may experience excursions above VTT.

VOL

Output Low Voltage

-0.10

VTT * 0.10

VOH

Output High Voltage

0.90 * VTT

VTT + 0.10

3, 6, 5

6. All outputs are open drain.

IOL

Output Low Current

1.70

4.70

3, 7

7. IOL is measured at 0.10 * VTT. IOH is measured at 0.90 * VTT.

IOH

Output High Current

1.70

4.70

3, 7

ILI

Input Leakage Current

N/A

± 100

µA

8. Leakage to VSS with land held at VTT.

ILO

Output Leakage Current

N/A

± 100

µA

9. Leakage to VTT with land held at 300 mV.

Table 2-14. PECI DC Electrical Limits

Symbol

Definition and Conditions

Min

Max

Units

Notes

Vin

Input Voltage Range

-0.15

VTT+ 0.15

Vhysteresis

Hysteresis

0.1 * VTT

—V

Negative-edge threshold voltage

0.275 * VTT

0.500 * VTT

Positive-edge threshold voltage

0.550 * VTT

0.725 * VTT

Isource

High level output source

(VOH = 0.75 * VTT)

-6.0

N/A

Isink

Low level output sink

(VOL = 0.25 * VTT)

0.5

1.0

Ileak+

High impedance state leakage to VTT

N/A

µA

Ileak-

High impedance leakage to GND

N/A

µA

Cbus

Bus capacitance

—

Vnoise

Signal noise immunity above 300 MHz

0.1 * VTT

—Vp-p

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