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CY28411-1 Datasheet, PDF (15/19 Pages) SpectraLinear Inc – Clock Generator for Intel Alviso Chipset
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CY28411-1
AC Electrical Specifications (continued)
Parameter
TCCJ
LACC
TR / TF
TRFM
∆TR
∆TF
VHIGH
VLOW
VOX
VOVS
Description
SRCT/C Cycle to Cycle Jitter
SRCT/C Long Term Accuracy
SRCT and SRCC Rise and Fall Times
Rise/Fall Matching
Rise TimeVariation
Fall Time Variation
Voltage High
Voltage Low
Crossing Point Voltage at 0.7V Swing
Maximum Overshoot Voltage
Condition
Measured at crossing point VOX
Measured at crossing point VOX
Measured from VOL = 0.175 to VOH =
0.525V
Determined as a fraction of
2 * (TR – TF)/(TR + TF)
Math averages Figure 14
Math averages Figure 14
VUDS
Minimum Undershoot Voltage
VRB
Ring Back Voltage
See Figure 14. Measure SE
PCI/PCIF
TDC
PCI Duty Cycle
Measurement at 1.5V
TPERIOD
Spread Disabled PCIF/PCI Period
Measurement at 1.5V
TPERIODSS Spread Enabled PCIF/PCI Period, SSC Measurement at 1.5V
TPERIODAbs Spread Disabled PCIF/PCI Period
Measurement at 1.5V
TPERIODSSAbs Spread Enabled PCIF/PCI Period, SSC Measurement at 1.5V
THIGH
PCIF and PCI high time
Measurement at 2.4V
TLOW
PCIF and PCI low time
Measurement at 0.4V
TR / TF
PCIF and PCI rise and fall times
Measured between 0.8V and 2.0V
TSKEW
Any PCI clock to Any PCI clock Skew Measurement at 1.5V
TCCJ
PCIF and PCI Cycle to Cycle Jitter
Measurement at 1.5V
DOT
TDC
DOT96T and DOT96C Duty Cycle
Measured at crossing point VOX
TPERIOD
DOT96T and DOT96C Period
Measured at crossing point VOX
TPERIODAbs DOT96T and DOT96C Absolute Period Measured at crossing point VOX
TCCJ
DOT96T/C Cycle to Cycle Jitter
Measured at crossing point VOX
LACC
DOT96T/C Long Term Accuracy
Measured at crossing point VOX
TR / TF
DOT96T and DOT96C Rise and Fall Measured from VOL = 0.175 to VOH =
Times
0.525V
TRFM
∆TR
∆TF
VHIGH
VLOW
VOX
VOVS
VUDS
VRB
USB
TDC
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
Determined as a fraction of
2 * (TR – TF)/(TR + TF)
Math averages Figure 14
Math averages Figure 14
See Figure 14. Measure SE
Duty Cycle
Measurement at 1.5V
Min.
–
–
175
–
–
–
660
–150
250
–
–0.3
–
Max. Unit
125
ps
300 ppm
700
ps
20
%
125
ps
125
ps
850 mV
–
mV
550 mV
VHIGH +
0.3
V
–
V
0.2
V
45
29.99100
29.9910
29.49100
29.49100
12.0
12.0
1.0
–
–
55
%
30.00900 ns
30.15980 ns
30.50900 ns
30.65980 ns
–
ns
–
ns
4.0 V/ns
500
ps
500
ps
45
55
%
10.41354 10.41979 ns
10.16354 10.66979 ns
–
250
ps
–
100 ppm
175
700
ps
–
–
–
660
–150
250
–
–0.3
–
20
%
125
ps
125
ps
850 mV
–
mV
550 mV
VHIGH + 0.3 V
–
V
0.2
V
45
55
%
Document #: 38-07694 Rev. *B
Page 15 of 19
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