2

ICS9120-52

Pin Descriptions

PIN

NUMBER

PIN

NAME

TYPE

DESCRIPTION

1

X1

Input

Crystal or external clock source. Has feedback bias for crystal.

2

VDD

Power

+Power supply input.

3

GND

Power

Ground return for Pin 2.

4

20M

Output

20 MHz fixed output clock.

5

CLK1

Output

33.8/42.83 MHz selectable clock output.

6

40M

Output

40 MHz fixedoutput clock.

7

FS

Input

Input selector for CLK1.

8

X2

Output

Crystal output drive.