ICS512

LOCO™ PLL Clock Multiplier

MDS 512 C

2

Revision 061900

Printed 11/13/00

Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA•95126•(408) 295-9800tel • www.icst.com

Pin Assignment

18

2

3

4

7

6

5

X1/ICLK

VDD

GND

REF

X2

S1

S0

CLK

Number

Name

Type

Description

1

X1/ICLK

XI

Crystal connection or clock input.

2

VDD

P

Connect to +3.3V or +5V.

3

GND

P

Connect to ground.

4

REF

O

Buffered crystal oscillator output clock.

5

CLK

O

Clock output per Table above.

6

S0

T I

Multiplier select pin 0. Connect to GND or VDD or float (no connection).

7

S1

T I

Multiplier select pin 1. Connect to GND or VDD or float (no connection).

8

X2

XO

Crystal connection. Leave unconnected for clock input.

Pin Descriptions

Key: XI/XO = crystal connections, TI = tri-level input, O = output, P = power supply connection

S1

S0

CLK

0

0

4X input

0

M

5.333X input

0

1

5X input

M

0

2.5X input

M

M

2X input

M

1

3.333X input

1

0

6X input

1

M

3X input

1

1

8X input

Clock Output Table

0 = connect directly to ground.

1 = connect directly to VDD.

M = leave unconnected (floating).

Output

20

24

30

32

33.33

37.5

40

48

50

60

64

Input

10

12

10

16

16.66

15

10

12

20

10

16

Selection (S1, S0)

M, M

M, M

1, M

M, M

M, M

M, 0

0, 0

0, 0

M, 0

1, 0

0, 0

Output

66.66

72

75

80

83.33

90

100

120

125

133.33

150

Input

20

12

25

10

25

15

20

15

25

25

25

Selection (S1, S0)

M, 1

1, 0

1, M

1, 1

M, 1

1, 0

0, 1

1, 1

0, 1

0, M

1, 0

Common Output Frequencies Examples (MHz)

Note that all of the above outputs are achieved by using a common, inexpensive 10MHz to 25MHz crystal.

Consult ICS on how to achieve other output frequencies.