Description

The PI6C671F is a mixed-voltage clock generator designed to provide all timing signals for Intel Pentium/Pentium II module-based motherboards. It provides four CPU, seven PCI, and up to eight SDRAM clocks. Additionally, three reference clocks (same frequency as the crystal) and two selectable 24/48 MHz clocks are available.

• Supports Pentium or Pentium II CPU modules

• Spread Spectrum capability reduces EMI

• Low power consumption

• Four CPU Clocks with VDDQ2of 3.3V or 2.5V

• Enhanced drive on CPUCLK0

• Seven PCI synchronous clocks (3.3V)

• One IOAPIC Clock @14.31818 MHz (Power from pin 46), with VDDQ1of 3.3V or 2.5V

• Two 48/24 MHz clocks (3.3V)

• Six/eight SDRAM clocks (3.3V)

• Three Ref. Clocks @14.31818 MHz (3.3V)

• Internal crystal loading capacitor

• Ref. 14.31818 MHz crystal oscillator input

• Separate 66/60# MHz select pin

• Separate power management MODE control pin

• I2C 2-Wire Serial Interface

• 48-pin SSOP Package (V) and TSSOP (A) Features