CY28405OXC

CY28405OXC Datasheet


CY28405

Part Datasheet
CY28405OXC CY28405OXC CY28405OXC (pdf)
Related Parts Information
CY28405OXCT CY28405OXCT CY28405OXCT
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CY28405

CK409-Compliant Clock Synthesizer
• Supports Springdale/Prescott CK409
• Selectable CPU frequencies
• 3.3V power supply
• Nine copies of PCI clock
• Four copies 3V66 clock with one optional VCH
• Two copies 48-MHz USB clock
• Two copies REF clock
• Three differential CPU clock pairs

• Supports SMBus/I2C Byte, Word, and Block Read/Write
• Ideal Lexmark Spread Spectrum profile for maximum electromagnetic interference EMI reduction
• 48-pin SSOP package
3V66

Block Diagram

XIN XOUT

FS_[A:E] VTT_PWRGD#

IREF

XTAL OSC

PLL Ref Freq

PLL 1

Divider Network

SELVCH

PLL2

MODE

SDATA SCLK

I2C Logic

WD Timer

Pin Configuration
**FS_A/REF_0
**FS_B/REF_1

VDD_REF

VDD_REF

REF[0:1]

XOUT

VDD_CPU

VSS_REF

CPUT[0:1,ITP], CPUC[0*:F1,SIT_PC] /PCIF0
*FS_D/PCIF1
*FS_E/PCIF2

VDD_PCI

VSS_PCI

PCI0

VDD_3V66

PCI1
3V66_[0:2]

PCI2

PCI3
Ordering Information

Output Current IOH = 6*IREF

VOH Z 0.7V 50

Part Number CY28405OC CY28405OCT Lead Free CY28405OXC CY28405OXCT

Package Type 48-pin Shrunk Small Outline package SSOP 48-pin Shrunk Small Outline package SSOP Tape and Reel
48-pin Shrunk Small Outline package SSOP 48-pin Shrunk Small Outline package SSOP Tape and Reel

Product Flow Commercial, 0° to 70°C Commercial, 0° to 70°C

Commercial, 0° to 70°C Commercial, 0° to 70°C

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Package Drawing and Dimensions
48-Lead Shrunk Small Outline Package O48

CY28405
51-85061-*C

Purchase of I2C components from Cypress, or one of its sublicensed Associated Companies, conveys a license under the Philips I2C Patent Rights to use these components in an I2C system, provided that the system conforms to the I2C Standard Specification as defined by Philips. Intel and Pentium are registered trademarks of Intel Corporation. Dial-a-Frequency is a registered trademark of Cypress Semiconductor. All product and company names mentioned in this document are trademarks of their respective holders.

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Cypress Semiconductor Corporation, The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress Semiconductor product. Nor does it convey or imply any license under patent or other rights. Cypress Semiconductor does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges.
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CY28405

Document History Page

Document Title CY28405 CK409-Compliant Clock Synthesizer Document Number 38-07512

Orig. of ECN NO. Issue Date Change

Description of Change
125354 04/15/03

RGL New Data Sheet
127159 06/16/03

RGL Removed SRC functionality

Modified the title to CK409-Compliant Clock Synthesizer
235894 See ECN RGL Removed all items referencing to 166MHz
Added Lead Free devices in the ordering information table

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More datasheets: 2276 | CS3301-ISZR | CS3301-ISZ | DFR0257 | 3444 | 9400-80025 | UHT-CS1 | 1387 | SX0550/BRASS | SX0550


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Datasheet ID: CY28405OXC 507724