-72-
Pin No.
Pin Name
I/O
Description
IC DESCRIPTION (LC78646)-3/3
73, 74
75
76
77
78
79
80
PD01, 2
VVSS
PCKIST
VVDD
FR
LDS
LDD
O
ó
I
ó
I
I
O
Phase comparison output pin 1, 2 to control built-in VCO.
Built -in VCO GND pin. Must always be connected to 0V.
PLL
Resistor connection pin to set current for PD01 and 02 outputs.
Built-in VCO power supply pin.
Resistor connection pin to set the frequency range of built-in VCO.
Laser power detection signal input pin.
Laser power control signal output pin.
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9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
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TEL 13942296513 QQ 376315150 892498299