Intel PentiumD 950 HH80553PG0964M User Manual

35

1. Unless otherwise noted, all specifications in this table apply to all processor frequencies.

V

L

Input Low Voltage

-0.150

0.000

N/A

V

-

V

H

Input High Voltage

0.660

0.700

0.850

V

-

V

CROSS(abs)

Absolute Crossing Point

0.250

N/A

0.550

V

2, 3

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.

V

CROSS(rel)

Relative Crossing Point

0.250 + 

0.5(V

Havg

 – 0.700)

N/A

0.550 + 

0.5(V

Havg

 – 0.700)

V

, 4, 5

4. V

Havg

 is the statistical average of the V

H

 measured by the oscilloscope.

5. V

Havg

 can be measured directly using “Vtop” on Agilent* oscilloscopes and “High” on Tektronix* oscilloscopes.

 ΔV

CROSS

Range of Crossing Points

N/A

N/A

0.140

V

-

V

OS

Overshoot

N/A

N/A

V

H 

+ 0.3

V

6

6. Overshoot is defined as the absolute value of the maximum voltage. 

V

US

Undershoot

-0.300 N/A

N/A

V

7

7. Undershoot is defined as the absolute value of the minimum voltage.

V

RBM

Ringback Margin

0.200

N/A

N/A

V

8

8. Ringback Margin is defined as the absolute voltage difference between the maximum Rising Edge Ringback and the

maximum Falling Edge Ringback.

V

TM

Threshold Region

V

CROSS

 – 0.100

N/A

V

CROSS

 + 0.100

V

9

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.