CY28439 SpectraLinear, CY28439 Datasheet - Page 18

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

Rev 1.0, November 21, 2006
AC Electrical Specifications
T
T
DOT
T
T
T
T
L
T
T
T
V
V
V
V
V
V
USB48, 24_48M
T
T
T
T
T
L
T
T
T
T
Edge rate
Edge rate
T
T
ACC
ACC
SKEW
CCJ
DC
PERIOD
PERIODAbs
CCJ
LTJ
R
RFM
T
T
HIGH
LOW
OX
OVS
UDS
RB
DC
PERIOD
PERIODabs
PERIOD24
PERIOD24abs
HIGH
LOW
HIGH24
LOW24
CCJ
LTJ
Parameter
R
F
/ T
F
Any PCI clock to Any PCI clock Skew
PCIF and PCI Cycle to Cycle Jitter
DOT96T and DOT96C Duty Cycle
DOT96T and DOT96C Period
DOT96T and DOT96C Absolute Period Measured at crossing point V
DOT96T/C Cycle to Cycle Jitter
DOT96T/C Long Term Accuracy
Long Term jitter
DOT96T and DOT96C Rise and Fall Times Measured from V
Rise/Fall Matching
Rise Time Variation
Fall Time Variation
Voltage High
Voltage Low
Crossing Point Voltage at 0.7V Swing
Maximum Overshoot Voltage
Minimum Undershoot Voltage
Ring Back Voltage
USB Duty Cycle
USB Period,
USB Period
24M Period
24M Period
Long Accuracy
USB high time (High drive)
USB low time (High drive)
24M high time (High drive)
24M low time (High drive)
Rising edge rate (High drive)
Falling edge rate (High drive)
USB Cycle to Cycle Jitter (High drive)
24_48M Cycle to Cycle Jitter (High drive) Measurement taken@1.5V waveform
Long Term jitter
Description
(continued)
Measurement at 1.5V
Measurement at 1.5V
Measured at crossing point V
Measured at crossing point V
Measured at crossing point V
Measured at crossing point V
Measurement taken from cross point
V
Measurement taken from cross point
V
Determined as a fraction of
2*(T
Math averages Figure 10
Math averages Figure 10
See Figure 10. Measure SE
Measurement at 1.5V
Measurement at 1.5V, mean value over
1 s
Measurement at 1.5V, max. and min.
values over 1 s
Measurement at 1.5V, mean value over
1 s
Measurement at 1.5V, max. and min.
values over 1 s
Measured at 1.5V using frequency
counter over 0.15s
Measurement at 2.0V
Measurement at 0.8V
Measurement at 2.0V
Measurement at 0.8V
Measured between 0.8V and 2.0V
Measured between 0.8V and 2.0V
Measurement taken@1.5V waveform
Measurement taken from cross point
V
OX
OX
OX
R
@1 s
@10 s
@ 1 s
– T
F
)/(T
R
Condition
OL
+ T
= 0.175 to V
F
)
OH
OX
OX
OX
OX
OX
= 0.525V
10.41354
10.16354
20.83125
20.48125
41.67083
41.57083
www.DataSheet4U.com
16.188
15.388
8.094
7.694
–150
Min.
–0.3
130
660
250
1.0
1.0
45
45
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
CY28439
10.41979
10.66979
20.83542
21.18542
41.66250
41.76250
Page 18 of 21
V
Max.
HIGH
10.9
11.5
22.7
22.6
500
500
250
100
700
700
700
125
125
850
550
100
300
350
700
0.3
0.2
3.0
3.0
55
20
55
–
–
+
V/ns
V/ns
Unit
ppm
ppm
mV
mV
mV
ps
ps
ns
ns
ps
ps
ps
ps
ps
ps
ns
ns
ns
ns
ns
ns
ns
ns
ps
ps
ps
%
%
%
V
V
V