......................DOC #: SP-AP-0063 (Rev. AA) Page 25 of 31
Test and Measurement Set-up
For PCI Single-ended Signals and Reference
The following diagram shows the test load configurations for
the single-ended PCI, USB, and REF output signals.
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 –500ps
T
CCJ
REF Cycle to Cycle Jitter Measurement at 1.5V – 1000 ps
L
ACC
Long Term Accuracy Measurement at 1.5V –100ppm
ENABLE/DISABLE and SET-UP
T
STABLE
Clock Stabilization from Power-up –1.8ms
T
SS
Stopclock Set-up Time 10.0 – ns
AC Electrical Specifications (continued)
Parameter Description Condition Min. Max. Unit
22
Measurement
Point
4 pF
50
22
Measurement
Point
4 pF
50
PCI/USB
L1 L2
L1
L2
L1 = 0.5", L2 = 8"
Figure 10. Single-ended PCI and USB Double Load Configuration
50
15
Measurement
Point
4 pF
50
15
Measurement
Point
4 pF
50
REF
L2
L2
L1
L1 L
2
15
Measurement
Point
4 pF
L1
L1 = 0.5", L2 = 8"
Figure 11. Single-ended REF Triple Load Configuration
Figure 12. Single-ended Output Signals (for AC Parameters Measurement)
