Electrical Specifications
2.8.5
BCLK[1:0] Specifications (CK410 based Platforms)
Table 18.
Front Side Bus Differential BCLK Specifications
Symbol
Parameter
Min
Typ
Max
Unit Figure Notes1
0.00
0
VL
VH
Input Low Voltage
-0.150
N/A
V
V
V
V
V
3
-
0.70
0
Input High Voltage
0.660
0.250
0.850
0.550
3
-
2, 8
3, 8, 9
-
Absolute Crossing
Point
VCROSS(abs)
N/A
N/A
N/A
3, 4
3, 4
3, 4
0.250 +
0.5(VHavg – 0.700)
0.550 +
0.5(VHavg – 0.700)
VCROSS(rel) Relative Crossing Point
Range of Crossing
Points
ΔVCROSS
N/A
0.140
VOS
VUS
Overshoot
N/A
-0.300
N/A
N/A
N/A
N/A
VH + 0.3
N/A
V
V
V
V
3
3
3
3
4
5
6
7
Undershoot
VRBM
VTM
Ringback Margin
Threshold Region
0.200
N/A
VCROSS – 0.100
VCROSS + 0.100
NOTES:
1.
2.
Unless otherwise noted, all specifications in this table apply to all processor frequencies.
Crossing voltage is defined as the instantaneous voltage value when the rising edge of
BCLK0 equals the falling edge of BCLK1.
3.
4.
5.
6.
VHavg is the statistical average of the VH measured by the oscilloscope.
Overshoot is defined as the absolute value of the maximum voltage.
Undershoot is defined as the absolute value of the minimum voltage.
Ringback Margin is defined as the absolute voltage difference between the maximum
Rising Edge Ringback and the maximum Falling Edge Ringback.
Threshold Region is defined as a region entered around the crossing point voltage in which
the differential receiver switches. It includes input threshold hysteresis.
The crossing point must meet the absolute and relative crossing point specifications
simultaneously.
7.
8.
9.
V
Havg can be measured directly using “Vtop” on Agilent* oscilloscopes and “High” on
Tektronix* oscilloscopes.
32
Datasheet
INTEL [ INTEL ]
