May 2007

ASM3P623S01B/C/J

rev 0.4

Timing-Safe™ Peak EMI Reduction IC

3 of 12

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

Pin Description for ASM3P623S01B/C

Pin #

Pin Name

Description

1

CLKIN

Input reference frequency, 5V-tolerant input

2

CLKOUT

2

Buffered clock output

3

SS%

3

Spread Spectrum Selection

4

GND

Ground

5

SSON

3

Spread Spectrum enable and disable option When SSON is HIGH, the spread

spectrum is enabled and when LOW, it turns off the spread spectrum.

6

CLKOUT

2

Buffered clock output

7

VDD

3.3V supply

8

CLKOUT

1,2

Buffered clock output

Notes:

1. This output is driven and has an internal feedback for the PLL.

2. Weak pull-down on all outputs. 3. Weak pull-up on these inputs

4. Buffered clock outputs are Timing-Safe™

Pin Description for ASM3P623S01J

Pin #

Pin Name

Description

1

XIN/CLKIN

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

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

3

SS%

2

Spread Spectrum Selection

4

GND

Ground

5

SSON

2

Spread Spectrum enable and disable option When SSON is HIGH, the spread

spectrum is enabled and when LOW, it turns off the spread spectrum.

6

CLKOUT

1

Buffered clock output

7

VDD

3.3V supply

8

CLKOUT

1,3

Buffered clock output

Notes:

1. Weak pull-down on all outputs. 2. Weak pull-up on these inputs

3. This output is driven and has an internal feedback for the PLL.

4. Buffered clock outputs are Timing-Safe™