1681C—08/26/10

9FG430

Four Output Differential Frequency Generator for PCIe Gen3 and QPI

2

Pin Configuration

Power Groups

VDD

GND

3

4

9,21

10,20

28

27

IREF, Analog VDD, GND for PLL Core

Description

Pin Num ber

REFOUT, Digital Inputs

DIF Outputs

Frequency Select Table

SEL14M_25M#

(FS3)

FS2 FS1 FS0 OUTPUT (MHz)

0

0

0

0

100.00

0

0

0

1

125.00

0

0

1

0

133.33

0

0

1

1

166.67

0

1

0

0

200.00

0

1

0

1

266.67

0

1

1

0

333.33

0

1

1

1

400.00

1

0

0

0

100.00

1

0

0

1

125.00

1

0

1

0

133.33

1

0

1

1

166.67

1

1

0

0

200.00

1

1

0

1

266.67

1

1

1

0

333.33

1

1

1

1

400.00

XIN/CLKIN

1

28 VDDA

X2

2

27 GNDA

VDD

3

26 IREF

GND

4

25 vFS0

REFOUT

5

24 vFS1

vFS2

6

23 DIF_0

DIF_3

7

22 DIF_0#

DIF_3#

8

21 VDD

VDD

9

20 GND

GND 10

19 DIF_1

DIF_2 11

18 DIF_1#

DIF_2# 12

17 ^SEL14M_25M#

SDATA 13

16 vSPREAD

SCLK 14

15 DIF_STOP#

^ indicates internal 120K pull up

v indicates internal 120K pull down