Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA

1542E 12/16/10

ICS9FG108D

Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA

3

Pin Description

PIN #

PIN NAME

PIN TYPE

DESCRIPTION

1

XIN /C LKIN

IN

C rystal inpu t or R e feren ce C lock in put

2

X2

OU T

C rystal outp ut, N om inally 14 .318 MH z

3

VD D

PWR

Pow e r supp ly, nom inal 3.3 V

4

GN D

PWR

Groun d pin.

5

R EFOU T

OU T

R e fere nce C lock o utput

6

vFS2

IN

Freq uency se lect pin . This pin has a n internal 1 20k pu ll dow n resistor

7vOE_7

IN

Active hig h inp ut for enab ling o utpu t 7. This p in ha s a 120 kohm pull do w n.

0 = tri-sta te ou tputs, 1 = ena ble o utpu ts

8

D IF_ 7

OU T

0 .7V differe ntial true clock o utpu t

9

D IF_ 7#

OU T

0 .7V differe ntial C o mplem enta ry clock ou tput

1 0

VD D

PWR

Pow e r supp ly, nom inal 3.3 V

1 1

D IF_ 6

OU T

0 .7V differe ntial true clock o utpu t

1 2

D IF_ 6#

OU T

0 .7V differe ntial C o mplem enta ry clock ou tput

13

^OE_6

IN

Active hig h inp ut for enab ling o utpu t 6. This p in ha s a n inte rna l 120ko hm p ull up .

0 = tri-sta te ou tputs, 1 = ena ble o utpu ts

1 4

VD D

PWR

Pow e r supp ly, nom inal 3.3 V

1 5

GN D

PWR

Groun d pin.

16

^OE_5

IN

Active hig h inp ut for enab ling o utpu t 5. This p in ha s a n inte rna l 120ko hm p ull up .

0 = tri-sta te ou tputs, 1 = ena ble o utpu ts

1 7

D IF_ 5

OU T

0 .7V differe ntial true clock o utpu t

1 8

D IF_ 5#

OU T

0 .7V differe ntial C o mplem enta ry clock ou tput

1 9

VD D

PWR

Pow e r supp ly, nom inal 3.3 V

2 0

D IF_ 4

OU T

0 .7V differe ntial true clock o utpu t

2 1

D IF_ 4#

OU T

0 .7V differe ntial C o mplem enta ry clock ou tput

22

vOE_4

IN

Active hig h inp ut for enab ling o utpu t 4. This p in as an internal 1 20koh m pu ll dow n.

0 = tri-sta te ou tputs, 1 = ena ble o utpu ts

2 3

SD ATA

I/O

D a ta pin fo r SMBus circuitry, 3.3V tolerant.

2 4

SC LK

IN

C lo ck pin of SMBus circu itry, 5V tole rant.

Note:

^ indic ates internal 120K pull up

v indic ates internal 120K pull down