Datasheet > CY28439-2

CY28439-2

更新时间： 2024-09-19 04:38:03

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
22页	298K
描述
Clock Generator for Intel Grantsdale Chipset

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中文翻译

获取价格

数据手册

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CY28439-2 数据手册

CY28439-2

PRELIMINARY

Clock Generator for Intel^Grantsdale Chipset

• Watchdog

Features

• Two independent overclocking PLLs

• Low-voltage frequency select input

• Compliant to Intel^CK410

• Supports Intel Prescott and Tejas CPU

• Selectable CPU frequencies

• Differential CPU clock pairs

• I²C support with readback capabilities

• Ideal Lexmark Spread Spectrum profile for maximum

electromagnetic interference (EMI) reduction

• 100-MHz differential SRC clocks (two selectable

• 3.3V power supply

• 56-pin SSOP and TSSOP packages

between Fixed and Overclocking)

• 96-MHz differential dot clock

• 48-MHz USB clocks

• 33-MHz PCI clock

CPU SRC PCI REF DOT96

x 2 x 6 x 9 x 2 x 1

USB

x 1

24-48M

x 1

• Dial-A-Frequency^

Block Diagram

Pin Configuration

VDD_RE

VSS_PCI

PCI3

*FS_E/PCI4

PCI5

VSS_PCI

VDD_PCI

PCIF0

VDD_PCI

PCI2

PCI1

PCI0

Xin

Xout

14.318MHz

Crystal

PLL Reference

IREF

VDD_CPU

SRESET#

CPUT

CPUC

REF1/FS_D**

REF0/FS_C**

VSS_REF

XIN

XOUT

VDD_REF

PLL1

Divider

CPU

**FS_A/PCIF1

*FS_B/PCIF2

VDD_48

**SEL24_48#/24_48M

FS_[E:A]

VDD_SRC

USB48

VSS_48

DOT96T

SCLK

SRCT (PCI Ex)

SRCC (PCI Ex)

SDATA

CPUT0

CPUC0

VDD_CPU

CPUT1

CPUC1

VSS_CPU

IREF

VSSA

VDDA

VDD_SRC

SRCT4

PLL2

Divider

SRC

DOT96C

VTTPWRGD#/PD

SRCT0

VDD_SRC

SRCC0

PLL3

SRCT4_SATA

SRCC4_SATA

Divider

SATA

VDD_SRC

VSS_SRC

SRCT1

SRCC1

SRCT2

VDD_48Mhz

PLL4

DOT96T

DOT96C

VDD_48

Divider

Fixed

SRCC2

VSS_SRC

SRCT_SATAT

SRCC_SATAC

VDD_SRC

SRCC4

USB48

VTTPWR_GD#/PD

SRCT3

SRCC3

VSS_SRC

VDD_48

24/48

VDD_PCI

PCI

VDD_PCI

* Indicates internal pull-up

** Indicates internal pull-down

PCIF

I2C

SDATA

SCLK

Watchdog

Timer

Logic

SRESET#

Cypress Semiconductor Corporation

•

3901 North First Street

•

San Jose, CA 95134

•

408-943-2600

Document #: 38-07750 Rev. *B

Revised July 07, 2005

12 3 4 5 6 7...22

中文翻译

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