November 2006

P2027A

rev 0.2

General Purpose EMI Reduction IC

2 of 8

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

Pin Configuration

Pin Description

Pin#

Pin Name

Type

Description

1

XIN/CLK

I

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

functions. It can be connected to either an external crystal or an external

reference clock.

2

XOUT

O

Crystal connection. Input connection for an external crystal. If using an

external reference, this pin must be left unconnected.

3

MRA

I

Digital logic input used to select Modulation Rate (see Table 1). This pin

has an internal pull-up resistor.

4

VSS

P

Ground Connection. Connect to system ground.

5

SSON

I

Digital logic input used to enable Spread Spectrum function (Active Low).

Spread Spectrum function enable when low. This pin has an internal pull-low

resistor.

6

ModOUT

O

Spread Spectrum Clock Output.

7

SR0

I

Digital logic input used to select Spreading Range (see Table 1). This pin

has an internal pull-up resistor.

8

VDD

P

Connect to +3.3V Power Supply.

1

2

3

4

5

6

7

8

ModOUT

VDD

SSON

XIN / CLKIN

XOUT

MRA

VSS

SRO

P2027A