CY28405 Cypress Semiconductor, CY28405 Datasheet - Page 16

• Manufacturer Part Number: CY28405
• Description: CK409-Compliant Clock Synthesizer
• Manufacturer: Cypress Semiconductor

Document #: 38-07512 Rev. *B
AC Electrical Specifications
Table 7. Group Timing Relationship and Tolerances
Table 8. USB to DOT Phase Offset
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
LOW
R
SKEW
CCJ
DC
PERIOD
HIGH
LOW
R
CCJ
DC
PERIOD
HIGH
LOW
R
CCJ
DC
PERIOD
R
CCJ
STABLE
SS
SH
Parameter
/ T
/ T
/ T
/ T
F
F
F
F
3V66 to PCI
VCH SKew
Parameter
DOT Skew
USB Skew
Group
PCIF and PCI Low Time
PCIF and PCI Rise and Fall Times
Any PCI Clock to Any PCI Clock Skew Measurement at 1.5V
PCIF and PCI Cycle to Cycle Jitter
Duty Cycle
Period
DOT High Time
DOT Low Time
Rise and Fall Times
Cycle to Cycle Jitter
Duty Cycle
Period
USB High Time
USB Low Time
Rise and Fall Times
Cycle to Cycle Jitter
REF Duty Cycle
REF Period
REF Rise and Fall Times
REF Cycle to Cycle Jitter
All Clock Stabilization from Power-up
Stopclock Set-up Time
Stopclock Hold Time
Description
(continued)
Typical
3V66 Leads PCI
180°
Conditions
0°
0°
Measurement at 1.5V
10-µs period
Measurement at 1.5V
125-µs period
Measurement at 0.4V
Measured between 0.4V and
2.4V
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 2.4V
Measurement at 0.4V
Measured between 0.4V and
2.4V
Measurement at 1.5V
Measurement at 1.5V
Measured between 0.4V and
2.4V
Measurement at 1.5V
Conditions
0.0 ns
0.0 ns
0.0 ns
Value
1.5 ns
Min.
20.8257
20.8257
69.827
8.994
8.794
8.094
7.694
Min.
12.0
10.0
0.5
0.5
1.0
1.0
45
45
45
–
–
–
–
–
–
0
Offset
20.8340
20.8340
10.486
10.386
10.036
69.855
9.836
Max.
1000
500
250
350
350
2.0
1.0
2.0
4.0
1.5
Tolerance
55
55
55
–
–
–
1000 ps
1000 ps
1000 ps
CY28405
Page 16 of 19
3.5 ns
Max.
V/ns
Unit
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ps
ps
ns
ps
ns
ps
ps
%
%
%