CY28404OCT Datasheet

IC型號(hào)：
CY28404OCT
PDF描述：
CK409-COMPLIANT CLOCK SYNTHESIZER
文件大小：
268.73KB
PDF頁(yè)數(shù)：
20頁(yè)
芯片廠家：
CYPRESS

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CY28404

CK409-Compliant Clock Synthesizer

Features

鈥?Supports Intel Springdale/Prescott (CK409)

鈥?Selectable CPU frequencies

鈥?3.3V power supply

鈥?Nine copies of PCI clock

鈥?Four copies 3V66 clock with optional VCH

鈥?Three copies 48-MHz clock

鈥?Three copies REF clock

錚?/div>

鈥?Two differential CPU clock pairs

鈥?Support SMBus/I

C Byte, Word, and Block Read/Write

鈥?Dial-A-Frequency

錚?/div>

鈥?Ideal Lexmark Spread Spectrum profile for maximum

electromagnetic interference (EMI) reduction

鈥?48-pin SSOP package

Table 1. Frequency Table

CPU

3V66

PCI

REF

48M

Block Diagram

XIN

XOUT

Pin Configuration

VDD_REF

REF(0:2)

XTAL

OSC

PLL 1

PLL Ref Freq

Divider

Network

FS_(A:E)

VTT_PWRGD#

IREF

SEL24#

SELVCH

PLL2

MODE

PD#

**FS_A/REF_0

**FS_B/REF_1

VDD_REF

VDD_CPU

XIN

CPUT(0:1), CPUC(0:1)

XOUT

VSS_REF

*FS_C/PCIF0

*FS_D/PCIF1

*FS_E/PCIF2

VDD_PCI

VSS_PCI

VDD_3V66

PCI0

3V66_(0:2)

PCI1

PCI2

VDD_PCI

PCI3

PCIF(0:2)

VDD_PCI

VSS_PCI

PCI(0:5)

PCI4

PCI5

RESET#/PD#

3V66_3/VCH

*SEL24#/24_48MHz

DOT_48

USB_48

VDD_48MHz

VSS_48

DOT_48

USB_48

24_48MHz

REF_2

VDDA

VSSA

IREF

VSS_CPU

CPUT1

CPUC1

VDD_CPU

CPUT0

CPUC0

VSS

DNC***

VDD

VTT_PWRGD#

SDATA*

SCLK*

3V66_0

3V66_1

VSS_3V66

VDD_3V66

3V66_2/MODE*

3V66_3/VCH/SELVCH**

VDD_48

SSOP-48

* 150k Internal Pull-up

** 150k Internal Pull-down

*** Do Not Connect

CY28404

SDATA

SCLK

Logic

Timer

RESET#

Cypress Semiconductor Corporation

Document #: 38-07510 Rev. *B

鈥?/div>

3901 North First Street

鈥?/div>

San Jose

CA 95134

鈥?/div>

408-943-2600

Revised June 16, 2004

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CY28404OCT Datasheet

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