CY28RS480 SpectraLinear, CY28RS480 Datasheet - Page 10

• Manufacturer Part Number: CY28RS480
• Description: Clock Generator
• Manufacturer: SpectraLinear

Rev 1.0, November 22, 2006
AC Electrical Specifications
Crystal
T
T
T
T
L
CPU Outputs
T
V
T
_ V
V
_ V
T
T
SRC
T
T
T
T
T
T
T
T
L
T
T
V
V
V
V
V
V
HTT66 HyperTransport Output
F66
DC
PERIOD
R
CCJ
ACC
R
SKEW
DC
JCYC
DC
PERIOD
PERIODSS
PERIODAbs
PERIODSSAbs
SKEW
SKEW
CCJ
ACC
R
RFM
T
T
DIFF
CM
HIGH
LOW
OX
OVS
UDS
RB
Parameter
/T
R
F
/ T
/ T
DIFF
CM
F
F
F
XIN Duty Cycle
XIN Period
XIN Rise and Fall Times
XIN Cycle to Cycle Jitter
Long-term Accuracy
Output Slew Rate
Differential Voltage
Any CPU to CPU Clock Skew
Change in VDIFF_DC Magnitude
Common Mode Voltage
Change in V
Duty Cycle
Cycle to Cycle Jitter
SRCT and SRCC Duty Cycle
100-MHz SRCT and SRCC Period
100-MHz SRCT and SRCC Period, SSC Measured at crossing point V
100-MHz SRCT and SRCC Absolute
Period
100-MHz SRCT and SRCC Absolute
Period, SSC
Any SRCT/C to SRCT/C Clock Skew
Any SRCS clock to Any SRCS clock
Skew
SRCT/C Cycle to Cycle Jitter
SRCT/C Long Term Accuracy
SRCT and SRCC Rise and Fall Times
Rise/Fall Matching
Rise TimeVariation
Fall Time Variation
Voltage High
Voltage Low
Crossing Point Voltage at 0.7V Swing
Maximum Overshoot Voltage
Minimum Undershoot Voltage
Ring Back Voltage
Operating Frequency
CM
Description
The device will operate reliably with input
duty cycles up to 30/70 but the REF clock
duty cycle will not be within specification
When XIN is driven from an external
clock source
Measured between 0.3V
As an average over 1- s duration
Over 150 ms
Measured @ test load using VOCM
±400 mV, 0.85 to 1.65
Measured at load single ended
Measured at crossing point V
Measured at load single ended
Measured at load single ended
Measured at load single ended
Measured at V
Measured at V
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
Measured at crossing point V
Measured at crossing point V
Measured at crossing point V
Measured from V
V
Determined as a fraction of
2*(T
Math averages Figure 5
Math averages Figure 5
See Figure 5. Measure SE
OH
R
= 0.525V
– T
www.DataSheet.co.kr
F
)/(T
R
Condition
OX
OX
+ T
OL
F
= 0.175 to
)
DD
and 0.7V
OX
OX
OX
OX
OX
OX
OX
OX
OX
OX
DD
9.997001
9.997001
10.12800
9.872001
69.841
–150
–200
–150
Min.
47.5
1.05
–0.3
175
660
250
0.4
45
45
–
–
–
2
–
0
–
–
–
–
–
–
–
–
–
–
CY28RS480
V
10.00300
10.05327
9.872001
10.17827
Page 10 of 14
HIGH
66.67
Max.
10.0
1.45
52.5
71.0
300
125
500
250
150
200
200
250
250
125
300
700
125
850
550
2.3
0.2
55
55
20
7
–
–
+ 0.3
Unit
ppm
V/ns
ppm
MHz
mV
mV
mV
mv
mv
ns
ns
ps
ps
ps
ns
ns
ns
ns
ps
ps
ps
ps
ps
ps
%
%
%
%
V
V
V
V
V
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