IDTTM/ICSTM Programmable FTG for Differential P4

TM CPU, PCI-Express & SATA Clocks

ICS9FG107

REV F 08/21/07

ICS9FG107

Programmable FTG for Differential P4

TM CPU, PCI-Express & SATA Clocks

6

I

2C Table: Device Control Register, READ/WRITE ADDRESS (DC/DD)

Pin #

Name

Control Function

Type0

1

PWD

Bit 7

RW

Pin 27

Bit 6

RW

Pin 5

Bit 5

RW

Pin 44

Bit 4

RW

Pin 7

Bit 3

RW

Off

On

Pin 26

Bit 2

RW

Hardware

Select

Software

Select

0

Bit 1

RW

Driven

Hi-Z

0

Bit 0

RW

Down

Center

Pin 45

Notes:

1. These bits reflect the latched state of the corresponding pins at power up, but may be written to

if Byte 0, bit 2 is set to '1'. FS3 is the SEL14M_25M# pin.

I

2C Table: Output Enable Register

Pin #

Name

Control Function

Type0

1

PWD

Bit 7

PCICLK0

Output Enable

RW

Stop Low

Enable

1

Bit 6

DIF_6

Output Enable

RW

Disable

Enable

1

Bit 5

DIF_5

Output Enable

RW

Disable

Enable

1

Bit 4

DIF_4

Output Enable

RW

Disable

Enable

1

Bit 3

DIF_3

Output Enable

RW

Disable

Enable

1

Bit 2

DIF_2

Output Enable

RW

Disable

Enable

1

Bit 1

DIF_1

Output Enable

RW

Disable

Enable

1

Bit 0

DIF_0

Output Enable

RW

Disable

Enable

1

I

2C Table: Output Stop Mode Register

Pin #

Name

Control Function

Type0

1

PWD

Bit 7

PCICLK1

Output Enable

RW

Stop Low

Enable

1

Bit 6

DIF_6

Stop Mode

RW

Free-run

Stop-able

0

Bit 5

DIF_5

Stop Mode

RW

Free-run

Stop-able

0

Bit 4

DIF_4

Stop Mode

RW

Free-run

Stop-able

0

Bit 3

DIF_3

Stop Mode

RW

Free-run

Stop-able

0

Bit 2

DIF_2

Stop Mode

RW

Free-run

Stop-able

0

Bit 1

DIF_1

Stop Mode

RW

Free-run

Stop-able

0

Bit 0

DIF_0

Stop Mode

RW

Free-run

Stop-able

0

44

7

Byte 0

27

5

26

Spread Enable

1

-

Enable Software Control of Frequency,

Spread Enable and Spread Type

DIF_STOP# drive mode

45

DWNSPRD#

1

Byte 1

8

12,13

17,18

20,21

30,29

33,32

39,38

42,41

Byte 2

9

12,13

17,18

20,21

30,29

33,32

See Frequency

Selection Table, Page 1

FS3

1

FS2

1

FS1

1

FS0

1

39,38

42,41