.....................Document #: 001-05103 Rev *B Page 23 of 27
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Test and Measurement Set-up
For Single-ended Signals and Reference
The following diagram shows test load configurations for the
single-ended PCI, USB, and REF output signals.
T
PERIOD
Spread Disabled 27M Period Measurement at 1.5V 37.0359
4
37.0381
3
ns
Spread Enabled 27M Period Measurement at 1.5V 37.0129
86
37.1317
2
ns
T
R
/ T
F
Rising and Falling Edge Rate Measured between 0.8V and 2.0V 1.0 4.0 V/ns
T
CCJ
Cycle to Cycle Jitter Measurement at 1.5V – 200 ps
L
ACC
27_M Long Term Accuracy Measured at crossing point V
OX
– 50 ppm
REF
T
DC
REF Duty Cycle Measurement at 1.5V 45 55 %
T
PERIOD
REF Period
Measurement at 1.5V 69.82033 69.86224 ns
T
PERIODAbs
REF Absolute Period
Measurement at 1.5V 68.83429 70.84826 ns
T
HIGH
REF High time
Measurement at 2V 29.97543 38.46654 ns
T
LOW
REF Low time
Measurement at 0.8V 29.57543 38.26654 ns
T
R
/ T
F
REF Rising and Falling Edge Rate Measured between 0.8V and 2.0V 1.0 4.0 V/ns
T
SKEW
REF Clock to REF Clock Measurement at 1.5V – 500 ps
T
CCJ
REF Cycle to Cycle Jitter Measurement at 1.5V – 1000 ps
L
ACC
Long Term Accuracy Measurement at 1.5V – 100 ppm
ENABLE/DISABLE and SET-UP
T
STABLE
Clock Stabilization from Power-up – 1.8 ms
T
SS
Stopclock Set-up Time 10.0 – ns
AC Electrical Specifications (continued)
Parameter Description Condition Min. Max. Unit
Figure 15.Single-ended Load Configuration Low Drive Option
