CY28439 SpectraLinear, CY28439 Datasheet - Page 19

• Manufacturer Part Number: CY28439
• Description: Clock Generator
• Manufacturer: SpectraLinear

Rev 1.0, November 21, 2006
AC Electrical Specifications
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.
T
T
REF
T
T
T
Edge Rate
Edge Rate
T
ENABLE/DISABLE and SET-UP
T
LTJ
LTJ
DC
PERIOD
PERIODAbs
CCJ
STABLE
Parameter
Long Term jitter
Long Term jitter
REF Duty Cycle
REF Period
REF Absolute Period
Rising edge rate
Falling edge rate
REF Cycle to Cycle Jitter
Clock Stabilization from Power-up
Figure 9. Single-ended Load Configuration HIGH DRIVE OPTION
Description
R E F
U S B
P C I/
R E F
U S B
P C I/
(continued)
Figure 8. Single-ended Load Configuration
Measurement taken from cross point
V
Measurement taken from cross point
V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 1.5V
Measured between 0.8V and 2.0V
Measured between 0.8V and 2.0V
Measurement at 1.5V
OX
OX
@ 10 s
@ 125 s
Condition
5 p F
5 p F
5 p F
5 p F
5 p F
5 p F
5 p F
5 p F
M e asurem ent
M easu rem ent
M easu rem ent
M easu rem ent
M easu rem ent
M e a s u r e m e n t
M e a s u r e m e n t
M e a s u r e m e n t
P oint
P oint
P oint
P oint
P oint
P o in t
P o in t
P o in t
68.82033
69.8203
www.DataSheet4U.com
Min.
1.0
1.0
45
–
–
–
–
CY28439
70.86224
Page 19 of 21
69.8622
1000
Max.
700
700
4.0
4.0
1.8
55
V/ns
V/ns
Unit
ms
ps
ps
ns
ns
ns
ps