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PRODUCT SPECIFICATION
RC7108
13
24MHz and 48MHz Clock Outputs (Lump Capacitance Test Load = 20pF)
IOAPIC Clock Output (Lump Capacitance Test Load = 20pF)
REF Clock Output (Lump Capacitance Test Load = 20pF)
Parameter
f
CPU = 133MHz
Min.
Typ.
48.008
24.004
+167
57/17, 114/17
0.5
0.5
45
Units
MHz
Test Condition/Comment
Determined by PLL divider ratio.
Max.
Frequency
f
D
n/m
t
R
t
F
t
D
t
A
f
ST
Frequency deviation
ppm
-
nS
nS
%
pS
mS
(48.008-48)/48
Output Rise Time
Output Fall Time
Duty Cycle
Jitter, Absolute
Frequency Stabilization
from Power-up
AC Output Impedance
2
2
0.4V to 2.4V
2.4V to 0.4V
Measured at 1.5V
Measured on rising edge at 1.5V.
Assumes full supply voltage reached within 1mS
from power-up.
Average value during switching transition. Used
for determining series termination value.
55
500
3
Z
O
20
ohm
Parameter
f
t
R
t
F
t
D
t
A
f
ST
CPU = 133MHz
Min.
Typ.
14.31818
0.4
0.4
45
Units
MHz
nS
nS
%
pS
mS
Test Condition/Comment
Frequency generated by crystal oscillator.
0.4V to 2.0V
2.0V to 0.4V
Measured at 1.25V
Measured on rising edge at 1.25V.
Assumes full supply voltage reached within 1mS
from power-up.
Average value during switching transition. Used
for determining series termination value.
Max.
Frequency
Output Rise Time
Output Fall Time
Duty Cycle
Jitter, Absolute
Frequency Stabilization
from Power-up
AC Output Impedance
1.6
1.6
55
500
1.5
Z
O
20
ohm
Parameter
f
t
R
t
F
t
D
t
jc
f
ST
CPU = 133MHz
Min.
Typ.
14.31818
0.5
0.5
45
Units
MHz
nS
nS
%
nS
mS
Test Condition/Comment
Frequency generated by crystal oscillator.
0.4V to 2.4V
2.4V to 0.4V
Measured at 1.5V
Measured on rising edge at 1.5V.
Assumes full supply voltage reached within 1mS
from power-up.
Average value during switching transition. Used
for determining series termination value.
Max.
Frequency
Output Rise Time
Output Fall Time
Duty Cycle
Jitter, Cycle-to-cycle
Frequency Stabilization
from Power-up
AC Output Impedance
2
2
55
500
3
Z
O
20
ohm