cy28548 SpectraLinear Inc, cy28548 Datasheet - Page 24

• Manufacturer Part Number: cy28548
• Description: Clock Generator For Intel Crestline Chipset
• Manufacturer: SpectraLinear Inc

Rev 1.5 September 16, 2008
AC Electrical Specifications
T
T
L
T
T
V
V
V
PCI/PCIF at 3.3V
T
T
T
T
T
T
T
T
T
T
T
T
L
48_M at 3.3V
T
T
T
T
T
T
T
L
27M_NSS/27M_SS at 3.3V
T
T
T
T
L
REF
T
T
ACC
ACC
ACC
ACC
PERIODSSAbs
CCJ
R
RFM
HIGH
LOW
OX
DC
PERIOD
PERIODSS
PERIODAbs
PERIODSSAbs
HIGH
LOW
HIGH
LOW
R
SKEW
CCJ
DC
PERIOD
PERIODAbs
HIGH
LOW
R
CCJ
DC
PERIOD
R
CCJ
DC
PERIOD
Parameter
/ T
/ T
/ T
/ T
F
F
F
F
100 MHz LCD_100 Absolute Period,
SSC
LCD_100 Cycle to Cycle Jitter
LCD_100 Long Term Accuracy
LCD_100 Rising/Falling Slew Rate
Rise/Fall Matching
Voltage High
Voltage Low
Crossing Point Voltage at 0.7V Swing
PCI Duty Cycle
Spread Disabled PCIF/PCI Period
Spread Enabled PCIF/PCI Period
Spread Disabled PCIF/PCI Period
Spread Enabled PCIF/PCI Period
Spread Enabled PCIF and PCI high time Measurement at 2V
Spread Enabled PCIF and PCI low time Measurement at 0.8V
Spread Disabled PCIF and PCI high
time
Spread Disabled PCIF and PCI low time Measurement at 0.8V
PCIF/PCI Rising/Falling Slew Rate
Any PCI clock to Any PCI clock Skew
PCIF and PCI Cycle to Cycle Jitter
PCIF/PCI Long Term Accuracy
Duty Cycle
Period
Absolute Period
48_M High time
48_M Low time
Rising and Falling Edge Rate
Cycle to Cycle Jitter
48M Long Term Accuracy
Duty Cycle
Spread Disabled 27M Period
Spread Enabled 27M Period
Rising and Falling Edge Rate
Cycle to Cycle Jitter
27_M Long Term Accuracy
REF Duty Cycle
REF Period
Description
(continued)
Measured at 0V differential @ 1 clock
Measured at 0V differential
Measured at 0V differential
Measured differentially from ±150 mV
Measured single-endedly from ±75 mV
Measurement at 1.5V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 2.V
Measured between 0.8V and 2.0V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 0.8V
Measured between 0.8V and 2.0V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 1.5V
Measured between 0.4V and 2.0V
Measurement at 1.5V
Measured at crossing point V
Measurement at 1.5V
Measurement at 1.5V
Measurement at 2V
Condition
OX
12.27095
11.87095
12.27365
11.87365
37.03594
37.03594
29.99700
30.08421
29.49700
29.56617
20.83125
20.48125
8.216563
7.816563
69.82033
9.74906
Min.
–0.3
300
2.5
1.0
1.0
1.0
45
45
45
45
–
–
–
–
–
–
–
–
–
–
CY28548
16.27995
16.07995
16.27665
16.07665
37.03813
37.03813
30.00300
30.23459
30.50300
30.58421
20.83542
21.18542
11.15198
10.95198
69.86224
10.3012
Page 24 of 30
Max.
1000
1.15
250
100
550
500
100
350
100
350
4.0
2.0
4.0
20
55
55
55
50
55
–
8
V/ns
V/ns
V/ns
V/ns
Unit
ppm
ppm
ppm
ppm
mV
ns
ps
ns
ns
ns
ns
ns
ns
ns
ns
ps
ps
ns
ns
ns
ns
ps
ns
ns
ps
%
%
%
%
%
ns
V
V