MK1413

MPEG Audio Clock Synthesizer

MDS 1413 B

2

Revision 091697

Printed 11/15/00

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

PRELIMINARY INFORMATION

Number

Name

Type Description

1

X1

I

Crystal Connection. Connect to a 14.31818 MHz crystal or clock.

2

VDD

P

Connect to +3.3V or +5V.

3

GND

P

Connect to ground.

4

NC

-

No Connect.

5

CLK

O

Audio Clock Output as per table above.

6

S1

I

Frequency Select 1 Input. Determines CLK output as per table above.

7

S0

I

Frequency Select 0 Input. Determines CLK output as per table above.

8

X2

O

Crystal Connection to a 14.31818 MHz crystal, or leave unconnected for clock input.

Pin Descriptions

Key: I = Input, O = output, P = power supply connection

Pin Assignment

External Components/Crystal Selection

A minimum number of external components are required for proper oscillation. For a crystal input, one

load capacitor should be connected to each of the X1 and X2 pins and ground, and a parallel resonant

14.31818 MHz crystal is recommended. The value (in pF) of each crystal load capacitor should equal

(CL-4)*2, where CL is the crystal’s load (correlation) capacitance in pF. The frequency tolerance of the

crystal should be 50ppm or better. For a clock input, connect to X1 and leave X2 unconnected. A

decoupling capacitor of 0.1µF should be connected between VDD and GND on pins 2 and 3, and 33

Ω

terminating resistor may be used on the clock output if the trace is longer than 1 inch.

1

8

2

3

4

7

6

5

X1

S0

GND

X2

VDD

CLK

8 pin SOIC

NC

S1

S1

S0

Audio Clock

Accuracy

pin 6

pin 7

pin 5

(ppm)

0

0

8.192 MHz

-2 ppm

0

1

11.2896 MHz

-24 ppm

1

0

12.288 MHz

-2 ppm

1

1

16.9344 MHz

-24 ppm

Audio Clock Output Select Table