cdc922 133-mhz clock synthesizer/driver for pc motherboards with 3-state outputs
The CDC922 is a clock synthesizer/driver designed to generate CPU, CPU_DIV2, 3V66, PCI, APIC, 48MHz, and REF system clock signals for computer systems with a single Pentium III class microprocessor. It utilizes a 14.318-MHz crystal input or an external reference clock to drive two phase-locked loops (PLLs) that produce the necessary host frequencies and 48-MHz clock frequency without requiring external components.
| Supply Voltage VDD3.3V Range | 3.135 – 3.465 V |
|---|---|
| Supply Voltage VDD2.5V Range | 2.375 – 2.625 V |
| Operating Free-Air Temperature | -0 °C to 85°C |
| Crystal Frequency (Normal Mode) | 14.318 MHz |
| Package Type | 48-Pin SSOP Package |
It supports a single Pentium III class microprocessor.
Yes, it includes Spread Spectrum Clocking with 0.34% downspread for reduced EMI.
Yes, it operates from Dual 2.5-V and 3.3-V Supplies.