SI5366 Datasheet, PDF (8/20 Pages) Silicon Laboratories – PRECISION CLOCK MULTIPLIER/JITTER ATTENUATOR

Si5366
Pin #
4
5, 6, 15, 27,
62, 63, 76,
79, 81, 84,
86, 89, 91,
94, 96, 99,
100
7, 8, 14, 18,
19, 26, 28,
31, 33, 36,
38, 41, 43,
46, 64, 65
9
10
11
12
Pin Name
FRQTBL
V_DD
GND
C1B
C2B
C3B
ALRMOUT
Table 3. Si5366 Pin Descriptions (Continued)
I/O Signal Level
Description
I
3-Level Frequency Table Select.
This pin selects SONET/SDH, datacom, or SONET/SDH to
datacom frequency translation table.
L = SONET/SDH.
M = Datacom.
H = SONET/SDH to Datacom.
This pin has a weak pull-down.
V_DD
Supply V_DD.
The device operates from a 1.8 or 2.5 V supply. Bypass capac-
itors should be associated with the following V_DD pins:
Pins
Bypass Cap
5, 6
0.1 µF
15
0.1 µF
27
0.1 µF
62, 63
0.1 µF
76, 79
1.0 µF
81, 84
0.1 µF
86, 89
0.1 µF
91, 94
0.1 µF
96, 99, 100 0.1 µF
GND
Supply
Ground.
This pin must be connected to system ground. Minimize the
ground path impedance for optimal performance.
O LVCMOS CKIN1 Invalid Indicator.
This pin is an active high alarm output associated with CKIN1.
Once triggered, the alarm will remain high until CKIN1 is vali-
dated.
0 = No alarm on CKIN1.
1 = Alarm on CKIN1.
O LVCMOS CKIN2 Invalid Indicator.
This pin is an active high alarm output associated with CKIN2.
Once triggered, the alarm will remain high until CKIN2 is vali-
dated.
0 = No alarm on CKIN2.
1 = Alarm on CKIN2.
O LVCMOS CKIN3 Invalid Indicator.
This pin is an active high alarm output associated with CKIN3.
0 = No alarm on CKIN3.
1 = Alarm on CKIN3.
O LVCMOS Alarm Output Indicator.
This pin is an active high alarm output associated with CKIN4
or the frame sync alignment alarm.
0 = ALRMOUT not active.
1 = ALRMOUT active.
8
Preliminary Rev. 0.2