CY28419 Cypress Semiconductor, CY28419 Datasheet - Page 13

• Manufacturer Part Number: CY28419
• Description: Clock Synthesizer
• Manufacturer: Cypress Semiconductor

Document #: 38-07444 Rev. *D
AC Electrical Specifications
Table 7. Group Timing Relationship and Tolerances
Table 8. USB to DOT Phase Offset
PCI / PCIF
T
T
T
T
T
T
T
T
DOT
T
T
T
T
T
T
USB
T
T
T
T
T
T
REF
T
T
T
T
ENABLE/DISABLE and SET-UP
T
T
T
Parameter
3V66 to PCI
DC
PERIOD
PERIOD
HIGH
LOW
R
SKEW
CCJ
DC
PERIOD
HIGH
LOW
R
LTJ
DC
PERIOD
HIGH
LOW
R
LTJ
DC
PERIOD
R
CCJ
STABLE
SS
SH
Group
/ T
/ T
/ T
/ T
VCH SKew
Parameter
DOT Skew
USB Skew
F
F
F
F
PCIF and PCI Duty Cycle
Spread Disabled PCIF/PCI Period Measurement at 1.5V
Spread Enabled PCIF/PCI Period
PCIF and PCI High Time
PCIF and PCI Low Time
PCIF and PCI rise and fall times
Any PCI Clock to Any PCI Clock
Skew
PCIF and PCI Cycle-to-Cycle Jitter Measurement at 1.5V
DOT Duty Cycle
DOT Period
DOT High Time
DOT Low Time
Rise and Fall Times
Long-term Jitter
USB Duty Cycle
USB Period
USB High Time
USB Low Time
Rise and Fall Times
Long-term Jitter
REF Duty Cycle
REF Period
REF Rise and Fall Times
REF Cycle-to-Cycle Jitter
Clock Stabilization from Power-up
Stopclock Set-up Time
Stopclock Hold Time
3V66 Leads PCI
Typical
Conditions
Description
180°
0°
0°
(continued)
Value
0.0ns
0.0ns
0.0ns
1.5 ns
Min.
Tolerance
Measurement at 1.5V
Measurement at 1.5V
Measurement at 2.0V
Measurement at 0.8V
Measured between 0.8V and 2.0V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 2.0V
Measurement at 0.8V
Measured between 0.8V and 2.0V
10-µs 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-µs period
Measurement at 1.5V
Measurement at 1.5V
Measured between 0.8V and 2.0V
Measurement at 1.5V
Offset
1000 ps
1000 ps
1000 ps
3.5 ns
Max.
Table 9. Maximum Lumped Capacitive Output Loads
Conditions
3V66 Clocks
PCI Clocks
DOT Clock
USB Clock
REF Clock
Clock
Max Load
29.9910
29.9910
20.8257
20.8257
20
30
30
30
10
69.827
8.994
8.794
8.094
7.694
Min.
12.0
12.0
10.0
0.5
0.5
1.0
1.0
45
45
45
45
–
–
–
–
–
–
0
30.0009
30.1598
20.8340
20.8340
10.486
10.386
10.036
69.855
9.836
Max.
1000
CY28419
500
250
Page 13 of 16
2.0
1.0
2.0
2.0
6.0
4.0
1.8
55
55
55
55
–
–
–
–
Unit
pF
pF
pF
pF
pF
V/ns
Unit
nS
ms
nS
nS
pS
nS
nS
nS
nS
ns
ns
ps
ns
ns
ns
ns
ns
ns
ns
ps
ns
ns
%
%
%
%