Intel Pentium 4 Processor in the 478-PinPackage at 1.40 GHz, 1.50 GHz, 1.60 GHz, 1.70 GHz, 1.80 GHz, 1.90 GHz, and 2GHz

Electrical Specifications
Datasheet 31
.
Figure 6. Differential Clock Waveform
Figure 7. Differential Clock Crosspoint Specification
Crossing
Voltage
Threshold
Region
VH
VL
Overshoot
Undershoot
Ringback
Margin
Rising Edge
Ringback
Falling Edge
Ringback,
BCLK0
BCLK1
Crossing
Voltage
Tph
Tpl
Tp
Tp = T1 (BCLK[1:0] period)
T2 = BCLK[1:0] Period stability (not shown)
Tph =T3 (BCLK[1:0] pulse high time)
Tpl = T4 (BCLK[1:0] pulse low time)
T5 = BCLK[1:0] rise time through the threshold region
T6 = BCLK[1:0] fall time through the threshold region
200
250
300
350
400
450
500
550
600
650
660 670 680 690 700 710 720 730 740 750 760 770 780 790 800 810 820 830 840 850
VHavg (V)
Crossing Point (V)
250 + 0.5 (VHavg - 710)
550+0.5(VHavg-710)
550 mV
250 mV
Vhavg (mV)
Crossing Point (mV)
200
250
300
350
400
450
500
550
600
650
660 670 680 690 700 710 720 730 740 750 760 770 780 790 800 810 820 830 840 850
VHavg (V)
Crossing Point (V)
250 + 0.5 (VHavg - 710)
550+0.5(VHavg-710)
550 mV
250 mV
200
250
300
350
400
450
500
550
600
650
660 670 680 690 700 710 720 730 740 750 760 770 780 790 800 810 820 830 840 850
VHavg (V)
Crossing Point (V)
250 + 0.5 (VHavg - 710)
550+0.5(VHavg-710)
550 mV
250 mV
Vhavg (mV)
Crossing Point (mV)