Electrical Specifications
28
Datasheet
2.7.2
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 eight BCLKs in order for the processor to recognize the proper
signal state. See
for the DC specifications. See
for additional
timing requirements for entering and leaving the low power states.
2.7.3
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.
NOTES:
1.
Unless otherwise noted, all specifications in this table apply to all processor frequencies.
2.
V
IL
is defined as the voltage range at a receiving agent that will be interpreted as a logical
low value.
3.
V
IH
is defined as the voltage range at a receiving agent that will be interpreted as a logical
high value.
4.
V
IH
and V
OH
may experience excursions above V
TT
.
5.
The V
TT
referred to in these specifications is the instantaneous V
TT
.
6.
Leakage to V
SS
with land held at V
TT
.
7.
Leakage to V
TT
with land held at 300 mV.
NOTES:
1.
Unless otherwise noted, all specifications in this table apply to all processor frequencies.
2.
Measured at V
TT
* 0.2V.
3.
For Vin between 0 and V
OH
.
Table 2-9.
GTL+ Signal Group DC Specifications
Symbol
Parameter
Min
Max
Unit
Notes
1
V
IL
Input Low Voltage
-0.10
GTLREF – 0.10
V
2, 5
V
IH
Input High Voltage
0.10
V
TT
+ 0.10
V
3, 4, 5
V
OH
Output High Voltage
V
TT
– 0.10
V
TT
V
4, 5
I
OL
Output Low Current
N/A
V
TT_MAX
/
[(R
TT_MIN
) + (2 * R
ON_MIN
)]
A
-
I
LI
Input Leakage
Current
N/A
± 100
µA
6
I
LO
Output Leakage
Current
N/A
± 100
µA
7
R
ON
Buffer On Resistance
7.5
11
Ω
Table 2-10. Open Drain and TAP Output Signal Group DC Specifications
Symbol
Parameter
Min
Max
Unit
Notes
1
V
OL
Output Low Voltage
0
0.20
V
-
I
OL
Output Low Current
16
50
mA
2
I
LO
Output Leakage Current
N/A
± 200
µA
3
Содержание Core2 Extreme QX9000 Series
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