CY28412
AC Electrical Specifications (continued)
Parameter
TR / TF
TCCJ
Description
USB Edge Rate
Condition
Measured between 0.8V and 2.0V
Measurement at 1.5V
Min.
1.0
–
Max.
2.0
Unit
V/ns
ps
USB Cycle to Cycle Jitter
350
REF
TDC
REF Duty Cycle
REF Period
Measurement at 1.5V
45
55
%
TPERIOD
TR / TF
TCCJ
Measurement at 1.5V
69.8203 69.8622 ns
REF Edge Rate
REF Cycle to Cycle Jitter
Measured between 0.8V and 2.0V
Measurement at 1.5V
0.5
–
2.0
V/ns
ps
1000
ENABLE/DISABLE and SETUP
TSTABLE Clock Stabilization from Power-up
TSS
–
10.0
0
1.8
–
ms
ns
ns
Stopclock Set-up Time
Stopclock Hold Time
TSH
–
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.
Measurement
Point
ꢂꢃ:
ꢂꢃ:
ꢀꢁ:
4pF
PCI/
USB
Measurement
Point
ꢀꢁ:
4pF
Measurement
Point
4pF
ꢂꢃ:
ꢂꢃ:
ꢂꢃ:
ꢀꢁ:
Measurement
Point
4pF
ꢀꢁ:
REF
Measurement
Point
ꢀꢁ:
4pF
Figure 7. Single-ended Load Configuration
Rev 1.0,November 20, 2006
Page 14 of 16
SPECTRALINEAR [ SPECTRALINEAR INC ]
