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CY28405

Part Number	CY28405
Manufacturer	Cypress Semiconductor
Description	CK409-Compliant Clock Synthesizer
Published	Sep 24, 2005
Detailed Description	CY28405 CK409-Compliant Clock Synthesizer Features • Supports Intel Springdale/Prescott (CK409) • Selectable CPU frequ...
Datasheet	CY28405 PDF File

Overview

CY28405 CK409-Compliant Clock Synthesizer Features • Supports Intel 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 • Dial-A-Frequency® • Supports SMBus/I2C Byte, Word, and Block Read/Write • Ideal Lexmark Spread Spectrum profile for maximum electromagnetic interference (EMI) reduction • 48-pin SSOP package CPU x3 3V66 x4 PCI x9 REF x2 48M x2 Block Diagram Pin Configuration **FS_A/REF_0 **FS_B/REF_1 VDD_REF VDD_REF REF[0:1] XIN XOUT VDD_CPU VSS_REF CPUT[0:1,ITP], CPUC[0:1,ITP] *FS_C/PCIF0 *FS_D/PCI...

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