SL28EB742 datasheet(1/40 Pages) ETC2

Part #	SL28EB742

Description	INTEL CEDARVIEW EMBEDDED CLOCK GENERATOR

PDF	40 Pages

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Manufacturer	ETC2 [List of Unclassifed Manufacturers]

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Preliminary Rev. 0.1 5/12

SL28EB742

This information applies to a product under development. Its characteristics and specifications are subject to change without notice.

SL28EB742

I NTEL® C EDARVIEW E MBEDDED C LOCK G ENERATOR

Features

Description

The SL28EB742 is a high-performance clock generator for supporting

Intel Cedarview platforms. The SL28EB742 is rated to support extended

grade temperature. Utilizing an inexpensive 14.318 MHz crystal, it is

capable of supporting multiple frequencies from four PLLs. The CPU

clock can support a frequency range from 83.33 to 166 MHz by

configuration of two strap pins. With a combination of strap pins and an

I2C, the device allows maximum configurability.

Low power push-pull type

differential output buffers

No termination resistors required

on differential clocks

3-bits slew rate control on single-

ended clocks

Differential CPU clocks with pins

selectable frequency

100 MHz Differential SRC clocks

Selectable Differential SATA or

SRC clock

96 MHz Differential DOT clock

48 MHz USB clock

Selectable 12 or 48 MHz clock

25 MHz clock

Buffered Reference Clock

14.318 MHz

14.318 MHz Crystal Input or

Clock input

I2C support with readback

capabilities

Triangular Spread Spectrum

profile for maximum

electromagnetic interference

(EMI) reduction

Extended Temperature:

–40 to 85

°

C

3.3 V power supply

56-pin QFN package

Selectable Differential SRC or CPU Clock

CPU CPU/

SRC

SRC SATA/

SRC

DOT96 48M

48M/

12M

33M 25M 14.318M

x2

x1

x5

x 1

x1

x1/2

x1

x2

x1

Patents pending

Ordering Information:

See page 37

Pin Assignments

SL28EB742

PCIF/ITP_EN2

CLKREQ32

12M_48M/SEL 12_481

VDD_48

GND_48

48M/FSA2

Notes:

1. Internal 100 kohm pull-up.

2. Internal 100 kohm pull-down.

15

16

17

18

19

20

21

22

23

24

25

26

27

28

1

2

3

4

5

6

7

8

9

10

11

12

13

14

42

41

40

39

38

37

36

35

34

33

32

31

30

29

56

55

54

53

52

51

50

49

48

47

46

45

44

43

GND_48

DOT96

FSB2

GND_SATA

SATA/SRC0

VDD_SATA

XIN/CLKIN

XOUT

PCI/SRC_STP1

CPU_STP1

SDATA

SCLK

GND_CPU

CPU0

VDD_CPU

CPU1

CPU2/SRC6

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