Intel E3300 AT80571RG0601ML Data Sheet

Product codes
AT80571RG0601ML
Page of 100
Electrical Specifications
30
Datasheet
Table 18.
FSB Differential Clock Specifications (800 MHz FSB)
T# Parameter
Min
Nom
Max
Unit
Figure
Notes
1
NOTES:
1.
Unless otherwise noted, all specifications in this table apply to all processor core frequencies
based on a 200 MHz BCLK[1:0].
BCLK[1:0] Frequency
198.980
200.020
MHz
-
2
2.
Duty Cycle (High time/Period) must be between 40 and 60%.
T1: BCLK[1:0] Period
4.99950
5.00050
ns
3
3.
The period specified here is the average period. A given period may vary from this specification
as governed by the period stability specification (T2). Min period specification is based on -
300 PPM deviation from a 5 ns period. Max period specification is based on the summation of
+300 PPM deviation from a 5 ns period and a +0.5% maximum variance due to spread spectrum
clocking.
T2: BCLK[1:0] Period Stability
150
ps
4
4.
In this context, period stability is defined as the worst case timing difference between successive
crossover voltages. In other words, the largest absolute difference between adjacent clock
periods must be less than the period stability.
T5: BCLK[1:0] Rise and Fall Slew Rate
2.5
8
V/nS
5
5.
Measurement taken from differential waveform.
T6: Slew Rate Matching
N/A
N/A
20
%
6
6.
Matching applies to rising edge rate for Clock and falling edge rate for Clock#. It is measured
using a ±75 mV window centered on the average cross point where Clock rising meets Clock#
falling. The median cross point is used to calculate the voltage thresholds the oscilloscope is to
use for the edge rate calculations. Slew rate matching is a single ended measurement.
Figure 3.
Differential Clock Waveform
Threshold
Region
VH
VL
Overshoot
Undershoot
Ringback
Margin
 Rising Edge
Ringback
 Falling Edge
Ringback
BCLK0
BCLK1
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
V
CROSS (ABS
)
V
CROSS (ABS
)