ICS601-01

Low Phase Noise Clock Multiplier

MDS 601-01 G

2

Revision 090800

Printed 11/14/00

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

Pin Descriptions

Key: I = Input with internal pull-up resistor; O = output; P = power supply connection; XI, XO = crystal

connections.

Pin Assignment

Number

Name

Type

Description

1

CLK

O

Clock output from VCO. Output frequency equals the input frequency times multiplier.

2

REFEN

I

Reference clock enable. Turns off the buffered crystal oscillator clock (stops low) when low.

3

VDD

P

Connect to +3.3V or +5V. Must match other VDDs.

4

VDD

P

Connect to +3.3V or +5V. Must match other VDDs.

5

VDD

P

Connect to +3.3V or +5V. Must match other VDDs.

6

X2

XO

Crystal connection. Connect to a 10 - 27 MHz fundamental parallel mode crystal.

7

S1

I

Multiplier select pin 1. Determines CLK output per table above. Internal pull-up.

8

X1/ICLK

XI

Crystal connection. Connect to a 10-27 MHz fundamental parallel mode crystal, or clock

9

S2

I

Multiplier select pin 2. Determines CLK output per table above. Internal pull-up.

10

S3

I

Multiplier select pin 3. Determines CLK output per table above. Internal pull-up.

11

S0

I

Multiplier select pin 0. Determines CLK output per table above. Internal pull-up.

12

OE

I

Output Enable. Tri-states both output clocks when low. Internal pull-up.

13

REFOUT

O

Buffered crystal oscillator clock output. Controlled by REFEN.

14

GND

P

Connect to ground.

15

GND

P

Connect to ground.

16

GND

P

Connect to ground.

ICS601-01

0=connect directly to ground

1=connect directly to VDD

1

8

9

16

2

3

4

5

6

7

10

11

12

13

14

15

S0

GND

GND

REFOUT

OE

CLK

REFEN

S1

X2

VDD

VDD

VDD

X1/ICLK

S3

GND

S2

S3

S2

S1

S0

CLK (see note 2 on following page)

0

0

0

0

TEST

0

0

0

1

TEST

0

0

1

0

Input x1

0

0

1

1

Input x3

0

1

0

0

Input x4

0

1

0

1

Input x5

0

1

1

0

Input x6

0

1

1

1

Input x8

1

0

0

0

TEST

1

0

0

1

Crystal osc. pass through (no PLL)

1

0

1

0

Input x2

1

0

1

1

TEST

1

1

0

0

Input x8

1

1

0

1

Input x10

1

1

1

0

Input x12

1

1

1

1

Input x16

Multiplier Select Table