Bclk[1:0] Specifications (Ck410 Based Platforms); Differential Clock Crosspoint Specification - Intel CORE 2 DUO E4000 - DATASHEET 3-2008 Datasheet
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2.7.9
BCLK[1:0] Specifications (CK410 based Platforms)
Table 18.
Front Side Bus Differential BCLK Specifications
Symbol
Parameter
V
Input Low Voltage
L
V
Input High Voltage
H
Absolute Crossing
V
CROSS(abs)
Point
Relative Crossing
V
CROSS(rel)
Point
Range of Crossing
ΔV
CROSS
Points
V
Overshoot
OS
V
Undershoot
US
V
Ringback Margin
RBM
V
Threshold Region
TM
NOTES:
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.
3. The crossing point must meet the absolute and relative crossing point specifications simultaneously.
4. V
is the statistical average of the V
Havg
5. V
can be measured directly using "Vtop" on Agilent* oscilloscopes and "High" on Tektronix* oscilloscopes.
Havg
6. Overshoot is defined as the absolute value of the maximum voltage.
7. Undershoot is defined as the absolute value of the minimum voltage.
8. Ringback Margin is defined as the absolute voltage difference between the maximum Rising Edge Ringback
and the maximum Falling Edge Ringback.
9. Threshold Region is defined as a region entered around the crossing point voltage in which the differential
receiver switches. It includes input threshold hysteresis.
Figure 6.
Differential Clock Crosspoint Specification
32
Min
-0.150
0.660
0.250
0.250 +
0.5(V
– 0.700)
Havg
N/A
N/A
-0.300
0.200
V
– 0.100
CROSS
measured by the oscilloscope.
H
650
600
550
500
550 + 0.5 (VHavg - 700)
450
400
350
300
250 mV
250
200
660 670 680 690 700 710 720 730 740 750 760 770 780 790 800 810 820 830 840 850
Typ
Max
0.000
N/A
0.700
0.850
N/A
0.550
0.550 +
N/A
0.5(V
– 0.700)
Havg
N/A
0.140
N/A
V
+ 0.3
H
N/A
N/A
N/A
N/A
N/A
V
+ 0.100
CROSS
550 mV
250 + 0.5 (VHavg - 700)
VHavg (mV)
Electrical Specifications
1
Unit
Figure
Notes
V
3
-
V
3
-
2, 3
V
3,
4
4, 3, 5
V
3,
4
V
3,
4
-
6
V
3
7
V
3
8
V
3
9
V
3
Datasheet
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