CY28405-3
AC Electrical Specifications (continued)
Parameter
VOVS
Description
Maximum Overshoot Voltage
Minimum Undershoot Voltage
Ring Back Voltage
Condition
Min.
–
Max.
Unit
V
VHIGH + 0.3
VUDS
VRB
–0.3
–
–
V
See Figure 7. Measure SE
0.2
V
3V66
TDC
3V66 Duty Cycle
Measurement at 1.5V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 2.0V
Measurement at 0.8V
45
55
15.0045
15.0799
–
ꢀ
ns
ns
ns
ns
ns
TPERIOD
TPERIOD
THIGH
Spread Disabled 3V66 Period
Spread Enabled 3V66 Period
3V66 High Time
14.9955
14.9955
4.9500
4.5500
0.5
TLOW
3V66 Low Time
–
TR / TF
3V66 Rise and Fall Times
Measured between 0.8V and
2.0V
2.0
TSKEW
TCCJ
Any 3V66 to Any 3V66 Clock Skew
3V66 Cycle-to-Cycle Jitter
Measurement at 1.5V
Measurement at 1.5V
–
–
250
250
ps
ps
PCI/PCIF
TDC
PCI Duty Cycle
Measurement at 1.5V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 2.0V
Measurement at 0.8V
45
29.9910
29.9910
12.0
55
30.0009
30.1598
–
ꢀ
ns
ns
ns
ns
ns
TPERIOD
TPERIOD
THIGH
Spread Disabled PCIF/PCI Period
Spread Enabled PCIF/PCI Period
PCIF and PCI High Time
TLOW
PCIF and PCI Low Time
12.0
–
TR / TF
PCIF and PCI Rise and Fall Times
Measured between 0.8V and
2.0V
0.5
2.0
TSKEW
TCCJ
Any PCI clock to Any PCI Clock Skew Measurement at 1.5V
–
–
500
250
ps
ps
PCIF and PCI Cycle to Cycle Jitter
Measurement at 1.5V
DOT
TDC
Duty Cycle
Measurement at 1.5V
Measurement at 1.5V
Measurement at 2.0V
Measurement at 0.8V
45
20.8271
8.094
7.694
1.0
55
20.8396
10.036
9.836
2.0
ꢀ
ns
ns
ns
ns
TPERIOD
THIGH
Period
USB High Time
USB Low Time
Rise and Fall Times
TLOW
TR / TF
Measured between 0.8V and
2.0V
TCCJ
Cycle to Cycle Jitter
Measurement at 1.5V
Measurement @1.5V
–
–
350
500
ps
ps
TSKEW
Any 48 MHz to 48 MHz clock skew
USB
TDC
Duty Cycle
Measurement at 1.5V
Measurement at 1.5V
Measurement at 2.0V
Measurement at 0.8V
45
20.8271
8.094
7.694
1.0
55
20.8396
10.036
9.836
2.0
ꢀ
ns
ns
ns
ns
TPERIOD
THIGH
Period
USB High Time
USB Low Time
Rise and Fall Times
TLOW
TR / TF
Measured between 0.8V and
2.0V
TCCJ
Cycle to Cycle Jitter
Measurement at 1.5V
Measurement @1.5V
–
–
350
500
ps
ps
TSKEW
Any 48 MHz to 48 MHz Clock Skew
REF
TDC
REF Duty Cycle
REF Period
Measurement at 1.5V
Measurement at 1.5V
45
69.827
1.0
55
69.855
4.0
ꢀ
ns
TPERIOD
TR / TF
REF Rise and Fall Times
Measured between 0.8V and
2.0V
V/ns
Rev 1.0,November 22, 2006
Page 13 of 16
SPECTRALINEAR [ SPECTRALINEAR INC ]
