6

Integrated

Circuit

Systems, Inc.

ICS9DB102

0852C—09/12/05

SMBus Table: Device Control Register, READ/WRITE ADDRESS (DC/DD)

Pin #

Name

Control Function Type0

1

PWD

Bit 7

SW_EN

Enables SMBus

Control

RW

Functions

controlled by

SMBus

registers

Functions

controlled by

device pins

1

Bit 6

RW

X

Bit 5

RW

X

Bit 4

RW

X

Bit 3

RW

X

Bit 2

RW

X

Bit 1

PLL BW #adjust

Selects PLL

Bandwidth

RW

Low BW

High BW

1

Bit 0

PLL Enable

Bypasses PLL for

board test

RW

PLL bypassed

(fan out mode)

PLL enabled

(ZDB mode)

1

SMBus Table: Output Enable Register

Pin #

Name

Control Function Type0

1

PWD

Bit 7

RW

X

Bit 6

RW

X

Bit 5

RW

X

Bit 4

RW

X

Bit 3

RW

X

Bit 2

RW

X

Bit 1

RW

X

Bit 0

RW

X

SMBus Table: Function Select Register

Pin #

Name

Control Function Type0

1

PWD

Bit 7

RW

X

Bit 6

RW

X

Bit 5

RW

X

Bit 4

RW

X

Bit 3

RW

X

Bit 2

RW

X

Bit 1

RW

X

Bit 0

RW

X

RESERVED

-

RESERVED

-

-

-

-

-

-

-

-

-

-

Byte 2

RESERVED

-

-

-

Byte 1

-

-

-

-

-

-

RESERVED

-

-

-

RESERVED

-

-

RESERVED

-

Byte 0

-

-

RESERVED

RESERVED

-

-

RESERVED

-

RESERVED

-

-

RESERVED

RESERVED

-

RESERVED

-

RESERVED

-

-

RESERVED

-

RESERVED

RESERVED

-

RESERVED

-

RESERVED

-

-

RESERVED

-

RESERVED