Preliminary

PLL601-22

27MHz Multiple output XO with Audio Clock

47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 11/19/04 Page 1

FEATURES

• 2 XO outputs at 27MHz (27MHz crystal input).

• Selectable Audio Clocks supporting:

32kHz, 44.1kHz, 48kHz, 64kHz and 96kHz

sampling rates

256, 384 and 512 oversampling ratios

8.192, 11.2896, 12.288, 16.9344, 16.384,

18.432, 22.5792, 24.576MHz audio frequencies

• On-the-fly switching of the audio frequency

• Power down tri-state selector.

• 3.3V Operating Voltage.

• Available in 16-Pin SSOP

DESCRIPTION

The PLL601-22 is a low cost integrated XO IC with

power down feature, designed to work with a

fundamental 27MHz crystal to provide the most

common audio clocks (8.192, 11.2896, 12.288,

16.9344, 16.384, 18.432, 22.5792, and 24.576MHz)

required by sampling rates of 32kHz, 44.1kHz, 48kHz,

64kHz and 96kHz (256, 384 and 512 oversampling

ratios). The wide range of audio frequencies makes it

ideal for STB and MPEG Video applications.

PACKAGE PIN CONFIGURATION

Note: ^: Internal pull-up resistor. The internal pull-up resistor

results in a default high value when no pull-down resistor is

connected to this pin.

AUDIO CLOCK SELECTION

S2

S1

S0

ACLK (MHz)

0

0

0

8.192

0

0

1

11.2896

0

1

0

12.288

0

1

1

16.9344

1

0

0

18.432

1

0

1

16.384

1

1

0

22.5792

1

1

1

24.576

BLOCK DIAGRAM

1

2

3

4

5

6

7

8

XIN

9

10

11

12

13

14

15

16

XOUT

VDD

VDD

NC

GND

GND

PDOWN^

S1^

27MHz

VDD

S0^

27MHz

GND

ACLK

S2^

XIN = 27 MHz

Xout

PDOWN

27MHz

Xin

[S2-S0]

Audio

PLL

XO

ACLK

27MHz