Intel Core 2 Quad Q8200 BX80570Q8200 User Manual
Product codes
BX80570Q8200
Electrical Specifications
32
Datasheet
2.8.2
FSB Frequency Select Signals (BSEL[2:0])
The BSEL[2:0] signals are used to select the frequency of the processor input clock
frequency associated with each combination. The required frequency is determined by
the processor, chipset, and clock synthesizer. All agents must operate at the same
frequency.
The Intel
®
Core™2 Extreme processor QX9650, Intel
®
Core™2 Quad processor Q9000,
Q9000S, Q8000, and Q8000S series operate at a 1333 MHz FSB frequency (selected by
a 333 MHz BCLK[1:0] frequency). The Intel
®
Core™2 Extreme processor QX9770
operates at a 1600 MHz FSB frequency (selected by a 400 MHz BCLK[1:0] frequency)
Individual processors will only operate at their specified FSB frequency.
For more information about these signals, refer to
2.8.3
Phase Lock Loop (PLL) and Filter
An on-die PLL filter solution will be implemented on the processor. The VCCPLL input is
used for the PLL. Refer to
for DC specifications.
2.8.4
BCLK[1:0] Specifications
NOTES:
1.
1.
Unless otherwise noted, all specifications in this table apply to all processor frequencies.
2.
Crossing voltage is defined as the instantaneous voltage value when the rising edge of
BCLK0 equals the falling edge of BCLK1.
BCLK0 equals the falling edge of BCLK1.
3.
“Steady state” voltage, not including overshoot or undershoot.
4.
Overshoot is defined as the absolute value of the maximum voltage. Undershoot is defined
as the absolute value of the minimum voltage.
as the absolute value of the minimum voltage.
5.
Measurement taken from differential waveform.
Table 2-15. BSEL[2:0] Frequency Table for BCLK[1:0]
BSEL2
BSEL1
BSEL0
FSB Frequency
L
L
L
RESERVED
L
L
H
RESERVED
L
H
H
RESERVED
L
H
L
RESERVED
H
H
L
400 MHz
H
H
H
RESERVED
H
L
H
RESERVED
H
L
L
333 MHz
Table 2-16. Front Side Bus Differential BCLK Specifications
Symbol
Parameter
Min
Typ
Max
Unit
Figure
Notes
1
V
L
Input Low Voltage
-0.30
N/A
N/A
V
3
V
H
Input High Voltage
N/A
N/A
1.15
V
3
V
CROSS(abs)
Absolute Crossing Point
0.300
N/A
0.550
V
2
ΔV
CROSS
Range of Crossing Points
N/A
N/A
0.140
V
-
V
OS
Overshoot
N/A
N/A
1.4
V
4
V
US
Undershoot
-0.300 N/A
N/A
V
4
V
SWING
Differential Output Swing
0.300
N/A
N/A
V
5