PLL701-11

Low EMI Spread Spectrum Multiplier Clock

47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 01/17/06 Page 2

BLOCK DIAGRAM

PIN DESCRIPTIONS

Name

Number

Type

Description

FIN

1

I

Input Clock Frequency, 24MHz to 120MHz.

S2

2

I

Digital control input to select multiplication factor and SST modulation

amplitude. Has internal pull-up.

S1

3

I

Digital control input to select multiplication factor and SST modulation

amplitude. Has internal pull-up.

S0

4

I

Digital control input to select multiplication factor and SST modulation

amplitude. Has internal pull-down.

GND

5

P

Ground.

FOUT

6

O

SST Modulated Clock Frequency Output. The frequency before modulation is

synthesized by multiplying the input frequency by 1X, 2X, or 4X, depending on

S(0:3).

S3

7

I

Digital control input to select multiplication factor and SST modulation

amplitude. Has internal pull-down.

VDD

8

P

3.3V Power Supply.

FOUT

FIN

S(0:3)

PLL

SST

Control

Logic