cy28rs680 SpectraLinear Inc, cy28rs680 Datasheet - Page 17

• Manufacturer Part Number: cy28rs680
• Description: Clock Generator For Ati Rs5xx/6xx Chipsets
• Manufacturer: SpectraLinear Inc

Rev 1.0, March 28, 2007
AC Electrical Specifications
T
T
ODSSAbs
T
T
L
T
T
∆T
∆T
V
V
V
HTT66 HyperTransport Output
F66
T
T
T
T
USB
T
T
T
T
T
T
T
L
T
REF
T
T
T
T
T
T
ENABLE/DISABLE and SET-UP
T
T
T
Parameter
ACC
ACC
PERIODAbs
PERI-
SKEW
CCJ
R
RFM
DC
R
CCJ
LTJ
DC
PERIOD
PERIODAbs
HIGH
LOW
R
CCJ
LTJ
DC
PERIOD
PERIODAbs
R
CCJ
LTJ
STABLE
SS
SH
HIGH
LOW
OX
R
F
/ T
/ T
/ T
/ T
F
F
F
F
100 MHz ATIGT and ATIGC Absolute
Period
100 MHz ATIGT and ATIGC Absolute
Period, SSC
Any ATIGT/C to ATIGT/C Clock Skew
ATIGT/C Cycle to Cycle Jitter
ATIGT/C Long Term Accuracy
ATIGT and ATIGC Rise and Fall Times Measured differentially from +150mV
Rise/Fall Matching
Rise Time Variation
Fall Time Variation
Voltage High
Voltage Low
Crossing Point Voltage at 0.7V Swing
Operating Frequency
Duty Cycle
Slew Rate
Cycle to Cycle jitter
Long Term jitter
Duty Cycle
Period
Absolute Period
USB High Time
USB Low Time
Rise and Fall Times
Cycle to Cycle Jitter
USB Long Term Accuracy
Long Term Jitter
REF Duty Cycle
REF Period
REF Absolute Period
REF Rise and Fall Times
REF Cycle to Cycle Jitter
Long Term Jitter
Clock Stabilization from Power Up
Stopclock Set-up Time
Stopclock Hold Time
Description
(continued)
Measured at crossing point V
Measured at crossing point V
Measured at crossing point V
Measured at crossing point V
Measured at crossing point V
Determined as a fraction of
2*(T
Measured singled-ended, including
overshoot
Measured singled-ended, including
undershoot
Measured at 1.5V
Measured at 20% and 60%
Measured at 1.5V
Measured 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 0.8V and 2.0V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 1.5V@1 µs
Measurement at 1.5V
Measurement at 1.5V
Measurement at 1.5V
Measured between 0.8V and 2.0V
Measurement at 1.5V
Measurement at 1.5V@10 µs
R
– T
F
)/(T
R
Condition
+ T
F
)
OX
OX
OX
OX
OX
20.48125
10.12800 9.872001
9.872001 10.17827
20.83229 20.83437
68.82033 70.86224
69.8203
8.094
7.694
–300
Min.
–0.3
10.0
250
–50
2.5
0.9
1.0
1.0
45
45
45
–
–
–
–
–
–
–
–
–
–
0
CY28RS680
21.18542
69.8622
10.256
10.250
Page 17 of 20
66.67
Max.
1000
1000
1.15
8.25
250
125
300
125
125
550
250
150
250
250
3.5
4.0
1.8
20
55
55
50
55
8
–
–
–
V/ns
MHz
V/ns
V/ns
Unit
ppm
V/ns
ppm
mV
ms
nS
nS
ns
ns
ps
ns
ns
ps
ns
ns
ns
ps
ps
ps
ps
ps
ps
ps
ps
ns
%
%
%
%
V
V