cy28549 SpectraLinear Inc, cy28549 Datasheet - Page 17

• Manufacturer Part Number: cy28549
• Description: Clock Generator For Intel Ck410m
• Manufacturer: SpectraLinear Inc

Document #:xxx-xxxxx Rev **
AC Electrical Specifications
Crystal
T
T
T
T
L
CPU at 0.8V
T
T
T
T
T
T
T
T
T
T
T
T
T
T
ODSSAbs
T
ODSSAbs
T
ODSSAbs
T
ODSSAbs
T
T
L
T
T
T
T
Parameter
DC
PERIOD
R
CCJ
ACC
DC
PERIOD
PERIOD
PERIOD
PERIOD
PERIODSS
PERIODSS
PERIODSS
PERIODSS
PERIODAbs
PERIODAbs
PERIODAbs
PERIODAbs
PERI-
PERI-
PERI-
PERI-
CCJ
CCJ2
ACC
SKEW
SKEW2
R
RFM
/T
/T
F
F
XIN Duty Cycle
XIN Period
XIN Rise and Fall Times
XIN Cycle to Cycle Jitter
Long-term Accuracy
CPUT and CPUC Duty Cycle
100-MHz CPUT and CPUC Period
133-MHz CPUT and CPUC Period
166-MHz CPUT and CPUC Period
200-MHz CPUT and CPUC Period
100-MHz CPUT and CPUC Period,
SSC
133-MHz CPUT and CPUC Period,
SSC
166-MHz CPUT and CPUC Period,
SSC
200-MHz CPUT and CPUC Period,
SSC
100-MHz CPUT and CPUC Absolute
period
133-MHz CPUT and CPUC Absolute
period
166-MHz CPUT and CPUC Absolute
period
200-MHz CPUT and CPUC Absolute
period
100-MHz CPUT and CPUC Absolute
period, SSC
133-MHz CPUT and CPUC Absolute
period, SSC
166-MHz CPUT and CPUC Absolute
period, SSC
200-MHz CPUT and CPUC Absolute
period, SSC
CPUT/C Cycle to Cycle Jitter
CPU2_ITP Cycle to Cycle Jitter
Long-term Accuracy
CPU1 to CPU0 Clock Skew
CPU2_ITP to CPU0 Clock Skew
CPUT and CPUC Rise and Fall Time Measured from V
Rise/Fall Matching
Description
PRELIMINARY
The device will operate reliably with input duty
cycles up to 30/70 but the REF clock duty cycle
will not be within specification
As an average over 1-μs duration
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 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
V
Determined as a fraction of
2*(T
When XIN is driven from an external clock source 69.841
Measured between 0.3V
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 at crossing point V
OH
R
= 0.525V
– T
F
)/(T
R
+ T
OL
Condition
F
= 0.175 to
)
DD
and 0.7V
OX
OX
OX
OX
OX
OX
OX
OX
OX
OX
OX
OX
OX
OX
OX
OX
OX
OX
OX
OX
OX
OX
OX
DD
9.997001 10.00300
7.497751 7.502251
5.998201 6.001801
4.998500 5.001500
9.997001 10.05327
7.497751 7.539950
5.998201 6.031960
4.998500 5.026634
9.912001 10.08800
7.412751 7.587251
5.913201 6.086801
4.913500 5.086500
9.912001 10.13827
7.412751 7.624950
5.913201 6.116960
4.913500 5.111634
Min.
47.5
175
45
–
–
–
–
–
–
–
–
–
CY28549
Page 17 of 23
125
Max.
52.5
71.0
10.0
85
500
300
300
100
150
700
55
20
[1]
[1]
Unit
ppm
ppm
ns
ns
ps
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ps
ps
ps
ps
ps
%
%
%