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SCAS643F – SEPTEMBER 2000 – REVISED APRIL 2009
PARAMETER MEASUREMENT INFORMATION
V
DD
140
Ω
Y
n
10 pF
140
Ω
Figure 1. Test Load Circuit
V
DD
50% V
DD
CLKIN
t
PLH
0.6 V
DD
50% V
DD
1Y0 − 1Y3
0.2 V
DD
t
r
t
f
t
PHL
0.6 V
DD
50% V
DD
0.2 V
DD
V
OL
V
OH
0V
Figure 2. Voltage Waveforms Propagation Delay (t
pd
) Measurements
50% V
DD
Any Y
50% V
DD
Any Y
t
sk(0)
Figure 3. Output Skew
t
cyc
PARAMETER
V
IH(Min)
V
IL(Max)
V
test
VALUE
0.5 V
DD
0.35 V
DD
0.4 V
DD
UNIT
V
V
V
V
IH(Min)
V
test
V
IL(Max)
t
high
0.6 V
DD
t
low
0.2 V
DD
0.4 V
DD
Peak to Peak (Minimum)
A.
All parameters in
are according to PCI-X 1.0 specifications.
Figure 4. Clock Waveform
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