April 2007

P1727

rev 0.2

Low Power Notebook LCD Panel EMI Reduction IC

2 of 9

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

Pin Configuration

Table 1 – Power Down Selection

PDB

Spread Spectrum

ModOUT

PLL

Mode

0

N/A

Disabled

Disabled

Power Down

1

ON

Normal

Normal

Normal

Table 2 Frequency Deviation Selection

P/ N

Deviation

P/N

Deviation

P1727A

-1.25%

P1727E

+/-0.625%

P1727B

-1.75%

P1727F

+/-0.875%

P1727C

-2.50%

P1727G

+/-1.25%

P1727D

-3.50%

P1727H

+/-1.75%

Pin Description

Pin#

Pin Name

Type

Description

1

CLKIN

I

External reference frequency input. Connect to externally generated

reference signal.

2

VDD

P

Connect to +3.3V

3

VSS

P

Ground Connection. Connect to system ground.

4

ModOUT

O

Spread Spectrum Clock output

5

REFOUT

O

Reference output.

6

NC

No connect

7

NC

No connect

8

PDB

I

Powerdown Pin.Pull low to disable spread spectrum clock output.

NC

REFOUT

1

2

3

4

5

6

7

8

P1727

CLKIN

VDD

VSS

ModOUT

NC

PDB