cy28rs680-2 SpectraLinear Inc, cy28rs680-2 Datasheet - Page 13

• Manufacturer Part Number: cy28rs680-2
• Description: Clock Generator For Ati Rs5xx/6xx Chipsets
• Manufacturer: SpectraLinear Inc

Rev 1.0, November 22, 2006
AC Electrical Specifications
T
T
ΔT
ΔT
V
V
V
V
V
V
HTT66 HyperTransport Output
F66
T
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
R
RFM
DC
R
CCJ
LTJ
SKEW
DC
PERIOD
PERIODAbs
HIGH
LOW
R
CCJ
ACC
LTJ
DC
PERIOD
PERIODAbs
R
CCJ
LTJ
STABLE
SS
SH
HIGH
LOW
OX
OVS
UDS
RB
Parameter
R
F
/ T
/ T
/ T
/ T
F
F
F
F
ATIGT and ATIGC Rise and Fall Times Measured from V
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
Operating Frequency
Duty Cycle
Slew Rate
Cycle to Cycle jitter
Long Term jitter
HTT66 clock to PCI clock Skew
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)
INFORMATION
ADVANCE
V
Determined as a fraction of
2*(T
Math averages Figure 7
Math averages Figure 7
See Figure 7. Measure SE
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 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
OH
R
= 0.525V
– T
F
)/(T
R
Condition
+ T
OL
F
= 0.175 to
)
20.48125 21.18542
20.83125
68.82033
69.8203
CY28RS680-2
8.094
7.694
–150
–100
Min.
–0.3
10.0
175
660
250
0.9
1.0
1.0
45
45
45
–
–
–
–
–
–
–
–
–
–
0
-
V
20.83542
70.86224
Page 13 of 16
HIGH
69.8622
10.036
66.67
9.836
Max.
1000
1000
300
700
125
125
850
550
250
500
100
500
500
0.2
2.0
4.0
1.8
20
55
55
55
–
–
4
–
–
+ 0.3
MHz
V/ns
V/ns
Unit
ppm
mV
mv
mv
ms
nS
nS
ps
ps
ps
ps
ps
ps
ns
ns
ns
ps
ps
ns
ns
ps
ps
ns
ns
%
%
%
%
V
V
V