Electrical Specifications
2.7.4
BCLK[1:0] Specifications
Table 19.
Front Side Bus Differential BCLK Specifications
Symbol
Parameter
Min
Typ
Max
Unit Notes1
VL
Input Low Voltage
Input High Voltage
-0.150
0.660
0.000
0.700
N/A
V
V
-
-
VH
0.850
Absolute Crossing
Point
2
3
VCROSS(abs)
VCROSS(rel)
ΔVCROSS
0.250
N/A
N/A
N/A
0.550
V
V
V
,
Relative Crossing
Point
0.250 +
0.5(VHAVG – 0.700)
0.550 +
0.5(VHAVG – 0.700)
4, 3, 5
Range of Crossing
Points
N/A
0.140
-
6
7
8
9
VOS
VUS
Overshoot
N/A
-0.300
N/A
N/A
N/A
N/A
VH + 0.3
N/A
V
V
V
V
Undershoot
VRBM
Ringback Margin
Threshold Region
0.200
N/A
VTM
VCROSS – 0.100
VCROSS + 0.100
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. VHavg is the statistical average of the VH measured by the oscilloscope.
5. VHavg can be measured directly using “Vtop” on Agilent* oscilloscopes and “High” on Tektronix*
oscilloscopes.
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.
§ §
32
Datasheet
INTEL [ INTEL ]
