CY28435
AC Electrical Specifications (continued)
Parameter
Edge Rate
TSKEW
Description
Falling edge rate
Condition
Min.
0.85
–
Max.
6.0
Unit
V/ns
ps
Measured between 0.8V and 2.0V
Any PCI clock to Any PCI clock Skew Measurement at 1.5V
500
550
TCCJ
PCIF and PCI Cycle to Cycle Jitter
Measurement at 1.5V
–
ps
DOT
TDC
DOT96T and DOT96C Duty Cycle
DOT96T and DOT96C Period
Measured at crossing point VOX
Measured at crossing point VOX
45
55
%
TPERIOD
TPERIODAbs
TCCJ
10.41354 10.41979 ns
10.16354 10.66979 ns
DOT96T and DOT96C Absolute Period Measured at crossing point VOX
DOT96T/C Cycle to Cycle Jitter
DOT96T/C Long Term Accuracy
Long Term jitter
Measured at crossing point VOX
Measured at crossing point VOX
Measurement taken from cross point
–
–
–
250
100
700
ps
ppm
ps
LACC
TLTJ
VOX@1 Ps
Measurement taken from cross point
VOX@10 Ps
–
130
–
700
700
20
ps
ps
%
TR / TF
TRFM
DOT96T and DOT96C Rise and Fall Times Measured from VOL = 0.175 to
OH = 0.525V
V
Rise/Fall Matching
Determined as a fraction of
2*(TR – TF)/(TR + TF)
'TR
Rise Time Variation
–
–
125
125
850
–
ps
ps
'TF
Fall Time Variation
VHIGH
VLOW
VOX
Voltage High
Math averages Figure 10
Math averages Figure 10
660
–150
250
–
mV
mV
mV
V
Voltage Low
Crossing Point Voltage at 0.7V Swing
Maximum Overshoot Voltage
550
VOVS
VHIGH
0.3
+
VUDS
VRB
Minimum Undershoot Voltage
Ring Back Voltage
–0.3
–
–
V
V
See Figure 10. Measure SE
0.2
USB
TDC
Duty Cycle
Measurement at 1.5V. In High Drive
mode
45
55
%
TPERIOD
TPERIODAbs
THIGH
Period
Measurement at 1.5V
20.83125 20.83542 ns
Absolute Period
USB high time
USB low time
Measurement at 1.5V
20.48125 21.18542
ns
ns
Measurement at 2.4V
8.094
7.694
0.52
0.52
–
10.5
10.5
2.4
TLOW
Measurement at 0.4V
ns
Edge Rate
Edge Rate
TCCJ
Rising edge rate
Falling edge rate
Cycle to Cycle Jitter
Long Term jitter
Measured between 0.8V and 2.0V
Measured between 0.8V and 2.0V
Measurement at 1.5V
V/ns
V/ns
ps
2.4
200
1.5
TLTJ
Measurement taken from cross point
–
ns
VOX@1 Ps
Measurement taken from cross point
VOX@10 Ps
–
–
1.5
1.5
ns
ns
Measurement taken from cross point
VOX@125 Ps
REF
TDC
REF Duty Cycle
Measurement at 1.5V
45
55
%
TPERIOD
TPERIODAbs
TR / TF
REF Period
Measurement at 1.5V
69.8203
69.8622
ns
REF Absolute Period
REF Rise and Fall Times
Measurement at 1.5V
68.82033 70.86224 ns
0.3 1.2 ns
Measured between 0.8V and 2.0V
Rev 1.0,November 20, 2006
Page 19 of 22
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