Q6000 datasheet(24/98 Pages) INTEL

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Electrical Specifications

Datasheet

2.6.2

CMOS and Open Drain Signals

Legacy input signals such as A20M#, IGNNE#, INIT#, SMI#, and STPCLK# use CMOS

input buffers. All of the CMOS and Open Drain signals are required to be asserted/

deasserted for at least four BCLKs for the processor to recognize the proper signal

state. See Section 2.6.3 for the DC specifications. See Section 6.2 for additional timing

requirements for entering and leaving the low power states.

2.6.3

Processor DC Specifications

The processor DC specifications in this section are defined at the processor core (pads)

unless otherwise stated. All specifications apply to all frequencies and cache sizes

unless otherwise stated.

Table 10.

GTL+ Signal Group DC Specifications

Symbol

Parameter

Min

Max

Unit

Notes1

NOTES:

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

VIL

Input Low Voltage

-0.10

GTLREF – 0.10

2, 3

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

value.

The VTT referred to in these specifications is the instantaneous VTT.

VIH

Input High Voltage

GTLREF + 0.10

VTT + 0.10

3, 4, 5

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

value.

VIH and VOH may experience excursions above VTT.

VOH

Output High Voltage

VTT – 0.10

VTT

3, 5

IOL

Output Low Current

N/A

VTT_MAX/

[(RTT_MIN)+(2*RON_MIN)]

A-

ILI

Input Leakage Current

N/A

± 200

µA

Leakage to VSS with land held at VTT.

ILO

Output Leakage

Current

N/A

± 200

µA

Leakage to VTT with land held at 300 mV.

RON

Buffer On Resistance

Table 11.

Open Drain and TAP Output Signal Group DC Specifications

Symbol

Parameter

Min

Max

Unit

Notes1

NOTES:

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

VOL

Output Low Voltage

0.20

VOH

Output High Voltage

VTT – 0.05

VTT + 0.05

2. VOH is determined by the value of the external pull-up resister to VTT.

IOL

Output Low Current

Measured at VTT * 0.2.

ILO

Output Leakage Current

N/A

± 200

µA

For Vin between 0 and VOH.

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