CY28439
AC Electrical Specifications (continued)
Parameter
TLTJ
Description
Long Term jitter
Condition
Min.
Max.
Unit
Measurement taken from cross point
–
700
ps
V
OX @ 10 Ps
Measurement taken from cross point
OX @ 125 Ps
TLTJ
Long Term jitter
–
700
ps
V
REF
TDC
REF Duty Cycle
Measurement at 1.5V
45
55
ns
ns
TPERIOD
REF Period
Measurement at 1.5V
69.8203
69.8622
TPERIODAbs
Edge Rate
Edge Rate
TCCJ
REF Absolute Period
Rising edge rate
Falling edge rate
REF Cycle to Cycle Jitter
Measurement at 1.5V
68.82033 70.86224 ns
Measured between 0.8V and 2.0V
Measured between 0.8V and 2.0V
Measurement at 1.5V
1.0
1.0
–
4.0
4.0
V/ns
V/ns
ps
1000
ENABLE/DISABLE and SET-UP
TSTABLE
Clock Stabilization from Power-up
–
1.8
ms
Test and Measurement Set-up
For PCI Single-ended Signals and Reference
The following diagrams show the test load configurations for
the single-ended PCI, USB, and REF output signals.
M ea su rem e n t
P o in t
ꢁ ꢁ :
P C I/
U S B
ꢂ ꢃ :
5 p F
M ea su rem e n t
P o in t
ꢄ ꢅ :
ꢄ ꢅ :
ꢂ ꢃ :
ꢂ ꢃ :
5 p F
R E F
M ea su rem e n t
P o in t
5 p F
Figure 8. Single-ended Load Configuration
Measurement
Point
ꢄꢅ:
ꢄꢅ:
ꢂꢃ:
ꢂꢃ:
5pF
Measurement
Point
PCI/
USB
5pF
Measurement
Point
ꢄꢅ:
ꢂꢃ:
5pF
Measurement
Point
ꢄꢅ:
ꢄꢅ:
REF
ꢂꢃ:
ꢂꢃ:
5pF
Measurement
Point
5pF
Figure 9. Single-ended Load Configuration HIGH DRIVE OPTION
Rev 1.0,November 21, 2006
Page 19 of 21
SPECTRALINEAR [ SPECTRALINEAR INC ]
