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Si5320
8
Rev. 2.3
Transitionless Period Required on
CLKIN for Detecting a LOS
Condition.
INFRQSEL[2:0] = 001
INFRQSEL[2:0] = 010
INFRQSEL[2:0] = 011
INFRQSEL[2:0] = 100
INFRQSEL[2:0] = 101
INFRQSEL[2:0] = 110
tLOS
Figure 3
24/fo_622
16/fo_622
12/fo_622
10/fo_622
9/fo_622
9/fo_622
—
—
—
—
—
—
32/fo_622
32/fo_622
32/fo_622
32/fo_622
32/fo_622
32/fo_622
s
Recovery Time for Clearing an
LOS Condition
VALTIME = 0
VALTIME = 1
tVAL
Measured from when a valid
reference clock is applied
until the LOS flag clears
0.09
12.0
—
—
0.22
14.1
s
Table 3. AC Characteristics (Continued)
(VDD33 =3.3 V ±5%, TA = –20 to 85 °C)
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
*Note: The Si5320 provides a 1/32, 1/16, 1/8, 1/4, 1/2, 1, 2, 4, 8, 16, or 32x clock frequency multiplication function with an
option for additional frequency scaling by a factor of 255/238 or 238/255 for FEC rate compatibility.