SL28647CLCT datasheet(1/27 Pages) SILABS

No. de pieza	SL28647CLCT

Descripción Electrónicos	Clock Generator for Intel짰CK505

PDF	27 Pages

Scroll/Zoom	100%

Fabricante Electrónico	SILABS [Silicon Laboratories]

Página de inicio	http://www.silabs.com

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Clock Generator for Intel®CK505

SL28647

....................... Document #: 001-05103 Rev *B Page 1 of 27

400 West Cesar Chavez, Austin, TX 78701

1+(512) 416-8500

1+(512) 416-9669

www.silabs.com

Features

• Compliant to Intel® CK505

• Selectable CPU frequencies

• Low power differential CPU clock pairs

• 100-MHz low power differential SRC clocks

• 96-MHz low power differential dot clock

• 27-MHz Spread and Non-spread video clock

• 48-MHz USB clock

• SRC clocks independently stoppable through

CLKREQ#[1:9]

• 100-MHz low power spreadable differential video clock

• 33-MHz PCI clocks

• Buffered Reference Clock 14.318 MHz

• Low-voltage frequency select inputs

•I2C support with readback capabilities

• Ideal Lexmark Spread Spectrum profile for maximum

electromagnetic interference (EMI) reduction

• 3.3V power supply

• 72-pin QFN package

Table 1. Output Confguration Table

CPU

SRC

PCI

REF

DOT96

USB_48M

LCD

27M

x2/x3

x9/11

x5

x 2

x 1

x1

x2

Pin Configuration

Block Diagram

72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55

VDD_SRC

1

54

VDD_SRC

SRCC_9

2

53

SRCC_2

SRCT_9

3

52

SRCT_2

VSS_SRC

4

51

SRCC_1/SATAC

CPUC2_ITP / SRCC_10

5

50

SRCT_1/SATAT

CPUT2_ITP / SRCT_10

6

49

VDD_SRC

VDDA

7

48

SRCC_0 / LCDC100 / 96C

VSSA

8

47

SRCT_0 / LCDT100 / 96T

NC

9

46

CLKREQ1#

CPUC1_MCH

10

45

FSB/TEST_MODE

CPUT1_MCH

11

44

DOT96C / 27M_SS

VDD_CPU

12

43

DOT96T / 27M_NSS

CPUC0

13

42

VSS_48

CPUT0

14

41

48M / FSA

VSS_CPU

15

40

VDD_48

SCLK

16

39

CKPWRGD/PD#

SDATA

17

38

CLKREQ7#

VDD_REF

18

37

PCIF0/ITP_SEL

19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

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