cy284108 SpectraLinear Inc, cy284108 Datasheet - Page 12

• Manufacturer Part Number: cy284108
• Description: Clock Generator For Intel Blackford And Bayshore Chipsets
• Manufacturer: SpectraLinear Inc

Rev 1.0, November 22, 2006
AC Electrical Specifications
Crystal
T
T
T
T
L
CPU at 0.7V
T
T
T
T
T
T
T
T
T
T
L
T
T
∆T
∆T
V
V
V
V
V
V
SRC
T
T
T
T
L
T
T
∆T
∆T
V
ACC
ACC
ACC
DC
PERIOD
R
CCJ
DC
PERIOD
PERIOD
PERIOD
PERIOD
PERIOD
PERIOD
PERIOD
SKEW
CCJ
R
RFM
HIGH
LOW
OX
OVS
UDS
RB
DC
PERIOD
SKEW
CCJ
R
RFM
HIGH
Parameter
R
F
R
F
/ T
/ T
/ T
F
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
266-MHz CPUT and CPUC Period
333-MHz CPUT and CPUC Period
400-MHz CPUT and CPUC Period
CPU0 to CPU1
CPUT/C Cycle to Cycle Jitter
Long Term Accuracy
CPUT and CPUC Rise and Fall Times
Rise/Fall Matching
Rise Time Variation
Fall Time Variation
Voltage High
Voltage Low
Crossing Point Voltage at 0.7V Swing
Maximum Overshoot Voltage
Minimum Undershoot Voltage
Ring Back Voltage
SRCT and SRCC Duty Cycle
100-MHz SRCT and SRCC Period
Any SRCT/C to SRCT/C 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
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-µs duration
Over 150 ms
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 using frequency counter over
0.15seconds.
Measured from V
Determined as a fraction of
2 * (T
Math averages Figure 9
Math averages Figure 9
Measured at crossing point V
Measured at crossing point V
Measured from V
Determined as a fraction of
2 * (T
Math averages Figure 9
Measured at crossing point V
Measured at crossing point V
See Figure 9. Measure SE
Measured at crossing point V
Measured at crossing point V
Measured at crossing point V
R
R
– T
– T
F
F
)/(T
)/(T
Condition
OL
R
R
OL
+ T
+ T
= 0.175 to V
= 0.175 to V
F
F
)
)
DD
and 0.7V
OH
OH
OX
OX
OX
OX
OX
OX
OX
OX
OX
OX
OX
OX
OX
OX
OX
= 0.525V
= 0.525V
DD
9.997001
7.497751
5.998201
4.998500
3.748875
2.999100
2.499250
9.997001
69.841
–150
Min.
47.5
–0.3
175
660
250
175
660
45
45
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
CY284108
V
10.00300
7.502251
6.001801
5.001500
3.000900
2.500750
10.00300
3.751125
Page 12 of 16
HIGH
Max.
1100
1100
52.5
71.0
10.0
500
300
100
300
125
125
850
550
250
125
300
125
125
850
0.2
55
85
20
55
20
–
–
+ 0.3
Unit
ppm
ppm
ppm
mV
mV
mV
mV
ns
ns
ps
ns
ns
ns
ns
ns
ns
ns
ps
ps
ps
ps
ps
ns
ps
ps
ps
ps
ps
%
%
%
%
%
V
V
V