CY28404 Cypress Semiconductor, CY28404 Datasheet - Page 17

• Manufacturer Part Number: CY28404
• Description: CK409-COMPLIANT CLOCK SYNTHESIZER
• Manufacturer: Cypress Semiconductor

Document #: 38-07510 Rev. *B
AC Electrical Specifications
Table 8. Group Timing Relationship and Tolerances
Table 9. USB to DOT Phase Offset
Table 10.Maximum Lumped Capacitive Output Loads
T
DOT
T
T
T
T
T
T
T
USB
T
T
T
T
T
T
T
REF
T
T
T
T
T
ENABLE/DISABLE and SETUP
T
T
T
CCJ
DC
PERIOD
HIGH
LOW
R
CCJ
SKEW
DC
PERIOD
HIGH
LOW
R
CCJ
SKEW
DC
PERIOD
R
CCJ
SKEW
STABLE
SS
SH
Parameter
/ T
/ T
/ T
F
F
F
3V66 to PCI
Group
VCH SKew
Parameter
DOT Skew
USB Skew
PCIF and PCI Cycle to Cycle Jitter
Duty Cycle
Period
DOT high time
DOT low time
Rise and Fall Times
Cycle to Cycle Jitter
Any 48-MHz to 48-MHz clock skew
Duty Cycle
Period
USB High Time
USB Low Time
Rise and Fall Times
Cycle to Cycle Jitter
Any 48-MHz to 48-MHz clock skew
REF Duty Cycle
REF Period
REF Rise and Fall Times
REF Cycle to Cycle Jitter
Any REF to REF clock skew
All Clock Stabilization from Power-up
Stopclock Set-up Time
Stopclock Hold Time
3V66 Clocks
PCI Clocks
USB Clock
DOT Clock
REF Clock
Clock
Description
3V66 Leads PCI
(continued)
Conditions
Typical
180°
0°
0°
Measurement at 1.5V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 2.4V
Measurement at 0.4V
Measured between 0.4V and 2.4V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 2.4V
Measurement at 0.4V
Measured between 0.4V and 2.4V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 1.5V
Measured between 0.4V and 2.4V
Measurement at 1.5V
Measurement at 1.5V
Max Load
Conditions
30
30
20
10
30
1.5 ns
Min.
Value
0.0ns
0.0ns
0.0ns
Offset
20.8271
20.8271
69.827
7.694
8.806
8.794
8.094
Min.
10.0
0.5
1.0
45
45
45
05
–
–
–
–
–
–
–
–
0
Units
3.5 ns
Max.
Tolerance
pF
pF
pF
pF
pF
20.8396
20.8396
10.486
10.386
10.036
69.855
1000 ps
1000 ps
1000 ps
9.836
Max.
1000
400
350
500
350
500
500
1.0
2.0
2.0
1.5
CY28404
55
55
55
–
–
Page 17 of 20
Unit
ms
nS
nS
nS
nS
ps
ns
ns
ps
ps
ns
ns
ps
ps
ns
ns
ps
ps
ns
ns
%
%
%