CY28419
AC Electrical Specifications (continued)
Parameter
Description
Conditions
Min.
Max.
Unit
PCI / PCIF
TDC
PCIF and PCI Duty Cycle
Measurement at 1.5V
45
55
ꢀ
ns
ns
nS
nS
nS
TPERIOD
TPERIOD
THIGH
Spread Disabled PCIF/PCI Period Measurement at 1.5V
Spread Enabled PCIF/PCI Period Measurement at 1.5V
29.9910 30.0009
29.9910 30.1598
PCIF and PCI High Time
PCIF and PCI Low Time
Measurement at 2.0V
12.0
12.0
0.5
–
–
TLOW
Measurement at 0.8V
TR / TF
TSKEW
PCIF and PCI rise and fall times
Measured between 0.8V and 2.0V
Measurement at 1.5V
2.0
Any PCI Clock to Any PCI Clock
Skew
–
–
500
250
pS
ps
TCCJ
PCIF and PCI Cycle-to-Cycle Jitter Measurement at 1.5V
DOT
TDC
DOT Duty Cycle
DOT Period
Measurement at 1.5V
Measurement at 1.5V
Measurement at 2.0V
Measurement at 0.8V
Measured between 0.8V and 2.0V
10-Ps period
45
55
ꢀ
ns
nS
nS
ns
ns
TPERIOD
THIGH
TLOW
20.8257 20.8340
DOT High Time
DOT Low Time
Rise and Fall Times
Long-term Jitter
8.994
8.794
0.5
10.486
10.386
1.0
TR / TF
TLTJ
–
2.0
USB
TDC
USB Duty Cycle
USB Period
Measurement at 1.5V
Measurement at 1.5V
Measurement at 2.0V
Measurement at 0.8V
Measured between 0.8V and 2.0V
125-Ps period
45
55
ꢀ
ns
nS
nS
ns
ns
TPERIOD
THIGH
TLOW
20.8257 20.8340
USB High Time
USB Low Time
Rise and Fall Times
Long-term Jitter
8.094
7.694
1.0
10.036
9.836
2.0
TR / TF
TLTJ
–
6.0
REF
TDC
REF Duty Cycle
Measurement at 1.5V
45
69.827
1.0
55
69.855
4.0
ꢀ
ns
TPERIOD
TR / TF
TCCJ
REF Period
Measurement at 1.5V
REF Rise and Fall Times
REF Cycle-to-Cycle Jitter
Measured between 0.8V and 2.0V
Measurement at 1.5V
V/ns
ps
–
1000
ENABLE/DISABLE and SET-UP
TSTABLE Clock Stabilization from Power-up
TSS
–
10.0
0
1.8
–
ms
ns
ns
Stopclock Set-up Time
Stopclock Hold Time
TSH
–
Table 7. Group Timing Relationship and Tolerances
Offset
Table 9. Maximum Lumped Capacitive Output Loads
Clock
Max Load
Unit
pF
Group
Conditions
Min.
Max.
PCI Clocks
3V66 Clocks
USB Clock
DOT Clock
REF Clock
30
30
20
10
30
3V66 to PCI
3V66 Leads PCI
1.5 ns 3.5 ns
pF
pF
Table 8. USB to DOT Phase Offset
pF
Parameter
DOT Skew
USB Skew
VCH SKew
Typical
0°
Value
0.0ns
0.0ns
0.0ns
Tolerance
1000 ps
1000 ps
1000 ps
pF
180°
0°
Rev 1.0,November 22, 2006
Page 13 of 15
SPECTRALINEAR [ SPECTRALINEAR INC ]
