March 2007

ASM3P2855B

rev 0.2

Notice: The information in this document is subject to change without notice.

Custom Clock Generator for Fax System

2 of 7

Pin Diagram

Pin Description

Pin#

Pin Name

Type

Description

1

XIN / CLKIN

I

Crystal connection or external reference frequency input. This pin has dual functions. It

can be connected either to an external crystal or an external reference clock.

2

XOUT

O

Crystal connection. If using an external reference, this pin must be left unconnected.

3

VDD

P

Power supply for the core

4

VDD_FOUT

P

Power supply for the output buffers.

5

GND_FOUT

P

Ground connection for the output buffers

6

GND

P

Ground connection

7

50MHz

O

Synchronous 50MHz Clock Output

8

50MHz

O

Synchronous 50MHz Clock Output

9

50MHz

O

Synchronous 50MHz Clock Output

10

50MHz

O

Synchronous 50MHz Clock Output

11

50MHz

O

Synchronous 50MHz Clock Output

12

REFOUT

O

24MHz Reference Clock Out put

13

50MHz

O

Synchronous 50MHz Clock Output

14

50MHz

O

Synchronous 50MHz Clock Output

15

50MHz

O

50MHz Clock Output

16

19.52MHz

O

19.52MHz Clock Output

50MHz

50MHz

1

2

3

4

13

14

15

16

5

6

7

8

9

10

11

12

50MHz

50MHz

50MHz

50MHz

19.52MHz

REFOUT

50MHz

VDD

VDD_FOUT

GND

50MHz

XOUT

XIN / CLKIN

ASM3P2855B

GND_FOUT