Datasheet > CY28551-3

CY28551-3

更新时间： 2024-02-19 07:03:18

品牌	Logo	应用领域
赛普拉斯 - CYPRESS		时钟发生器
页数	文件大小	规格书
29页	649K
描述
Universal Clock Generator for Intel, VIA and SIS㈢

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中文翻译

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数据手册

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CY28551-3 数据手册

CY28551-3

UniversalClockGeneratorforIntel, VIAandSIS^®

• Dynamic Frequency Control

• Dial-A-Frequency^®

Features

• Compliant to Intel^®CK505

• WatchDog Timer

• Selectable CPU clock buffer type for Intel P4 or K8 selection

• Selectable CPU frequencies

• Two Independent Overclocking PLLs

• Low-voltage frequency select input

• I²C support with readback capabilities

• Universal clock to support Intel, SiS and VIA platform

• 0.7V Differential CPU clock for Intel CPU

• 3.3V Differential CPU clock for AMD K8

• 100-MHz differential SRC clocks

• 96-MHz differential dot clock

• Ideal Lexmark Spread Spectrum profile for maximum

electromagnetic interference (EMI) reduction

• 3.3V power supply

• 56-pin QFN packages

• 133-MHz Link clock

CPU SRC SATA

x 2 x 6 x1

PCI

x 6

REF LINK

x 3 x2

DOT96

x 1

24_48M

48M

x 1

• 48-MHz USB clocks

• 33-MHz PCI clock

Block Diagram

Pin Configuration

VDD_REF

Xin

Xout

14.318-MHz

Crystal

REF[2:0]

PLL Reference

VDD_CPU

CPUT[1:0]

CPUC[1:0]

VDD_PCIEX

Divider

PLL1

CPU

PCIET[6:2]

PCIEC 6:2]

56 55 54 53 52 51 50 49 48 47 46 45 44 43

DOC[2:1]

FS[D:A]

*SEL0/ PCI5

VDD48

42 Xout

41 VDDREF

VDD_SATA

SEL_P4_K8

**SEL24_48 / 24_48M

40 SCLK

PCIET0 /SATAT

PCIEC0 /SATAC

**SEL1/48M

VSS48

VDDDOT

39 SDATA

38 VTTPWRG#/PD

37 CPUT0

36 CPUC0

35 VDDCPU

34 CPUT1

33 CPUC1

32 VSSCPU

31 **DOC2

30 VSSA

PLL2

PCIEX

Divider

LINK0/DOT96T/SATAT

LINK1/DOT96C/SATAC 8

VSSDOT

Multiplexer

Controller

VDD_DOT

CY28551-3

DOT96T/SATAT/LINK0

DOT96C/SATAC/LINK1

SEL[1:0]

VDDSATA 10

SATAT/PCIEXT0 11

SATAC/PCIEXC0 12

VSSSATA 13

NC 14

29 VDDA

VDD_PCI

PCI[6:0]

Divider

PLL3

SATA

15 16 17 18 19 20 21 22 23 24 25 26 27 28

PLL4

Fixed

VDD_48

48M

VTTPWR_GD#/PD

SEL24_48

24_48M

RESET_I#

SDATA

SCLK

I2C

Logic

WDT

SRESET#

* Indicates internal pull-up

** indicates internal pull-down

Cypress Semiconductor Corporation

Document #: 001-05677 Rev. *D

•

198 Champion Court

•

San Jose, CA 95134-1709

•

408-943-2600

Revised August 03, 2006

12 3 4 5 6 7...29

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