CY2280 Cypress Semiconductor, CY2280 Datasheet - Page 7

• Manufacturer Part Number: CY2280
• Description: 100-MHz Pentium II Clock Synthesizer/Driver with Spread Spectrum for Mobile or Desktop PCs
• Manufacturer: Cypress Semiconductor

Switching Waveforms
Document #: 38-07207 Rev. *A
(Free-Running)
CPU_STOP
(Free-Running)
CPU_STOP
PWR_DWN
APIC-APIC Clock Skew
PCI_STOP
PWR_DOWN
PCI_STOP
PCICLK
PCICLK
(External)
(External)
(External)
CPUCLK
(External)
CPUCLK
CPUCLK
CPUCLK
(Internal)
(Internal)
(Internal)
CPUCLK
(Internal)
(Internal)
(Internal)
PCICLK
PCICLK
PCICLK
PCICLK
PCICLK
Crystal
VCO
APIC
APIC
Shaded section on the VCO and Crystal waveforms indicates that the VCO and crystal oscillator are active, and there is a valid clock.
(continued)
t
9
CY2280
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