CY28412
AC Electrical Specifications (continued)
Parameter
TCCJ
Description
SRCT/C Cycle to Cycle Jitter
SRCT/C Long Term Accuracy
Condition
Measured at crossing point VOX
Measured at crossing point VOX
Min.
–
Max.
125
300
700
20
Unit
ps
LACC
–
ppm
ps
TR / TF
TRFM
'TR
SRCT and SRCC Rise and Fall Times Measured from VOL = 0.175 to VOH = 0.525V
175
–
Rise/Fall Matching
Determined as a fraction of 2*(TR – TF)/(TR + TF)
%
Rise Time Variation
Fall Time Variation
–
125
125
850
–
ps
'TF
–
ps
VHIGH
VLOW
VOX
Voltage High
Math averages Figure 8
Math averages Figure 8
660
–150
250
mv
mv
mV
Voltage Low
Crossing Point Voltage at 0.7V Swing
Maximum Overshoot Voltage
550
VOVS
VHIGH
0.3
+
–
V
VUDS
Minimum Undershoot Voltage
Ring Back Voltage
–0.3
–
–
V
V
VRB
See Figure 8. Measure SE
0.2
250
TSKEW
PCI/PCIF
TDC
Any SRCT/C to SRCT/C Clock Skew
Measured at Crossing point VOX
–
ps
PCI Duty Cycle
Measurement at 1.5V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 2.4V
Measurement at 0.4V
Measured between 0.8V and 2.0V
45
55
%
TPERIOD
TPERIOD
THIGH
TLOW
Spread Disabled PCIF/PCI Period
Spread Enabled PCIF/PCI Period
PCIF and PCI high time
PCIF and PCI low time
29.9910 30.0090 ns
29.9910 30.1598 ns
12.0
12.0
0.5
–
–
ns
ns
–
TR / TF
TSKEW
TCCJ
PCIF and PCI Edge Rate
2.0
500
500
V/ns
ps
Any PCI clock to Any PCI clock Skew Measurement at 1.5V
PCIF and PCI Cycle to Cycle Jitter
Measurement at 1.5V
–
ps
DOT
TDC
DOT96T and DOT96C Duty Cycle
DOT96T and DOT96C Period
DOT96T/C Cycle to Cycle Jitter
DOT96T/C Long Term Accuracy
Measured at crossing point VOX
Measured at crossing point VOX
Measured at crossing point VOX
Measured at crossing point VOX
Measured from VOL = 0.175 to VOH = 0.525V
45
55
%
TPERIOD
TCCJ
10.4135 10.4198 ns
–
–
250
300
ps
LACC
ppm
TR / TF
DOT96T and DOT96C Rise and Fall
Times
175
700
ps
TRFM
'TR
Rise/Fall Matching
Determined as a fraction of 2*(TR – TF)/(TR + TF)
–
–
20
125
125
850
–
%
ps
Rise Time Variation
Fall Time Variation
'TF
–
ps
VHIGH
VLOW
VOX
Voltage High
Math averages Figure 8
Math averages Figure 8
660
–150
250
mv
mv
mV
Voltage Low
Crossing Point Voltage at 0.7V Swing
Maximum Overshoot Voltage
550
VOVS
VHIGH
0.3
+
–
V
VUDS
VRB
Minimum Undershoot Voltage
Ring Back Voltage
–0.3
–
–
V
V
See Figure 8. Measure SE
0.2
USB
TDC
Duty Cycle
Period
Measurement at 1.5V
Measurement at 1.5V
Measurement at 2.4V
Measurement at 0.4V
45
55
%
TPERIOD
THIGH
TLOW
20.8271 20.8396 ns
USB high time
USB low time
8.094
7.694
10.036
9.836
ns
ns
Rev 1.0,November 20, 2006
Page 13 of 16
SPECTRALINEAR [ SPECTRALINEAR INC ]
