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DataSheet4U.
com CY28404 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 optional VCH • Three copies 48-MHz clock • Three copies REF clock • Two differential CPU clock pairs • Support SMBus/I2C Byte, Word, and Block Read/Write • Dial-A-Frequency • Ideal Lexmark Spread Spectrum profile for maximum electromagnetic interference (EMI) reduction • 48-pin SSOP package Table 1.
Frequency Table CPU x2 3V66 x4 PCI x9 REF x3 48M x3 Block Diagram XIN XOUT Pin Configuration **FS_A/REF_0 **FS_B/REF_1 VDD_REF VDD_CPU XIN CPUT(0:1), CPUC(0:1) XOUT VSS_RE...

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