CY28447
AC Electrical Specifications (continued)
Parameter
Description
Condition
Min.
Max.
Unit
TR / TF
SSCT and SSCC Rise and Fall Time
Measured from VOL = 0.175 to
175
700
ps
VOH = 0.525V
TRFM
Rise/Fall Matching
Determined as a fraction of
2*(TR – TF)/(TR + TF)
–
20
%
'TR
Rise TimeVariation
–
–
125
125
850
–
ps
ps
'TF
Fall Time Variation
VHIGH
VLOW
VOX
Voltage High
Math averages Figure 17
Math averages Figure 17
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 17. Measure SE
0.2
PCI/PCIF at 3.3V
TDC
PCI Duty Cycle
Spread Disabled PCIF/PCI Period
Measurement at 1.5V
Measurement at 1.5V
45
55
%
TPERIOD
TPERIODSS
TPERIODAbs
29.99100 30.00900 ns
29.9910 30.15980 ns
29.49100 30.50900 ns
29.49100 30.65980 ns
Spread Enabled PCIF/PCI Period, SSC Measurement at 1.5V
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
PCIF and PCI low time
Measurement at 2.4V
Measurement at 0.4V
12.0
12.0
1.0
–
–
ns
ns
TLOW
–
TR / TF
TSKEW
TCCJ
PCIF/PCI rising and falling Edge Rate Measured between 0.8V and 2.0V
Any PCI clock to Any PCI clock Skew Measurement at 1.5V
4.0
500
500
300
V/ns
ps
PCIF and PCI Cycle to Cycle Jitter
PCIF/PCI Long Term Accuracy
Measurement at 1.5V
–
ps
LACC
Measured at crossing point VOX
–
ppm
DOT96 at 0.7V
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
Measured at crossing point VOX
Measured at crossing point VOX
Measured from VOL = 0.175 to
–
–
250
300
900
ps
ppm
ps
LACC
TR / TF
DOT96T and DOT96C Rise and Fall
Time
175
VOH = 0.525V
TRFM
Rise/Fall Matching
Determined as a fraction of
2*(TR – TF)/(TR + TF)
–
20
%
'TR
Rise Time Variation
–
–
125
125
850
–
ps
ps
'TF
Fall Time Variation
VHIGH
VLOW
VOX
Voltage High
Math averages Figure 17
Math averages Figure 17
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
Minimum Undershoot Voltage
Ring Back Voltage
–0.3
–
–
V
V
VRB
See Figure 17. Measure SE
0.2
48_M at 3.3V
TDC
Duty Cycle
Measurement at 1.5V
45
55
%
Rev 1.0,November 20, 2006
Page 18 of 21
SPECTRALINEAR [ SPECTRALINEAR INC ]
