IDT5V41064

1 OUTPUT PCIE GEN1/2 SYNTHESIZER

IDT® 1 OUTPUT PCIE GEN1/2 SYNTHESIZER

2

IDT5V41064

REV G 112111

Pin Assignment

Spread Spectrum Select Table

Pin Descriptions

1

16-pin QFN

5

9

13

GND

X1

X2

NC

CLK

CLK

GND

VDDA

SS1

Spread%

0

-0.5% down

1

No spread

Pin

Number

Pin

Name

Pin Type

Pin Description

1

GND

Power

Connect to ground.

2

X1

XI

Crystal or clock input. Connect to 25 MHz crystal or single-ended clock.

3

X2

XO

Crystal connection. Connect to parallel mode crystal. Leave floating if X1 is driven by

single-ended clock.

4

NC

–

No connect.

5

GND

Power

Connect to ground.

6

SS1

Input

Spread Select 1. See table above. Internal pull-up resistor.

7

IREF

Output

475

Ω precision resistor must be attached to this pin, which is connected to internal

current source.

8

NC

–

No connect.

9

VDDA

Power

Connect to 3.3V and filter as analog supply.

10

GND

Power

Connect to ground.

11

CLK

Output

HCSL complementary output clock.

12

CLK

Output

HCSL true output clock.

13

NC

–

No connect.

14

NC

–

No connect.

15

VDD

Power

Connect to 3.3 V for OSC and digital circuits.

16

NC

–

No connect.