SI5320 Datasheet, PDF (8/34 Pages) List of Unclassifed Manufacturers – SONET/SDH PRECISION CLOCK MULTIPLIER IC

Si5320
Table 3. AC Characteristics (Continued)
(V_DD33 = 3.3 V ±5%, T_A = –20 to 85 °C)
Parameter
Symbol
Test Condition
Min Typ Max Unit
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
Recovery Time for Clearing an
LOS Condition
VALTIME = 0
VALTIME = 1
t_LOS
Figure 3
24_{/fo_622}
—
32_{/fo_622}
s
16_{/fo_622}
—
32_{/fo_622}
12_{/fo_622}
—
32_{/fo_622}
10_{/fo_622}
—
32_{/fo_622}
9_{/fo_622}
—
32_{/fo_622}
9_{/fo_622}
—
32_{/fo_622}
t_VAL Measured from when a valid
reference clock is applied
until the LOS flag clears
0.09
—
0.22
s
12.0
—
14.1
*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.
8
Rev. 2.3