SL28PCIe16

DOC#: SP-AP-0790 (Rev. 0.3)

Page 2 of 12

32-QFN Pin Definitions

promptly achieve optimum compliance and clock signal

integrity; historically, attainable typically through device and/or

board redesigns.

hard coded.

Features:

- > 4000 bits of configurations

- Can be configured through SMBus or hard coded

- Custom frequency sets

- Differential skew control on true or compliment or both

- Differential duty cycle control on true or compliment or both

- Differential amplitude control

- Differential and single-ended slew rate control

- Program Internal or External series resistor on single-ended

clocks

- Program different spread profiles

- Program different spread modulation rate

Pin No.

Name

Type

Description

1

VDD_SRC

PWR 3.3V Power Supply

2

VDD_SRC

PWR 3.3V Power Supply

3

NC

NC

No Connect.

4

VSS

GND

Ground

5

VSS

GND

Ground

6

SRC0

O, DIF 100MHz True differential serial reference clock

7

SRC0#

O, DIF 100MHz Complement differential serial reference clock

8

VDD_SRC

PWR 3.3V Power Supply

9

SRC1

O, DIF 100MHz True differential serial reference clock

10

SRC1#

O, DIF 100MHz Complement differential serial reference clock

11

SRC2

O, DIF 100MHz True differential serial reference clock

12

SRC2#

O, DIF 100MHz Complement differential serial reference clock

13

VSS_SRC

GND

Ground

14

VDD_SRC

PWR 3.3V Power Supply

15

SRC3#

O, DIF 100MHz Complement differential serial reference clock

16

SRC3

O, DIF 100MHz True differential serial reference clock

17

SRC4#

O, DIF 100MHz Complement differential serial reference clock

18

SRC4

O, DIF 100MHz True differential serial reference clock

19

VDD_SRC

PWR 3.3V Power Supply

20

SRC5#

O, DIF 100MHz Complement differential serial reference clock

21

SRC5

O, DIF 100MHz True differential serial reference clock

22

VSS_SRC

GND

Ground

23

SCLK

I

SMBus compatible SCLOCK

24

SDATA

I/O

SMBus compatible SDATA

25

XOUT

O

25.00MHz Crystal output, Float XOUT if using only CLKIN (Clock input)

26

XIN / CLKIN

I

25.00MHz Crystal input or 3.3V, 25MHz Clock Input

27

VSS_CORE

GND

Ground

28

NC

NC

No Connect.

29

VDD_CORE

PWR 3.3V Power Supply

30

VDD_SRC

PWR 3.3V Power Supply

31

NC

NC

No Connect.

32

VSS_SRC

GND

Ground