MX8325-1

The MX8325-1 is a CMOS motherboard clock generator used in portable or desktop computers. The chip includes an oscillator circuitry and three PLLs to provide 14.318 MHz, CPUCLK, 1/2 CPUCLK, PCI bus CLK, and 24 MHz clocks. This chip is built with low skew clock drivers that provide the needed buffering for PCI applications. The desired CPUCLK is selected by S0, S1 and S2. This MX8325-1 provides selectable 75 MHz, 66.6 MHz, 60 MHz, 55 MHz, 33.3 MHz, 50 MHz, 40 MHz, 33.3 MHz, and 25 MHz CPUCLK. It is suitable for 80486DX, 80486DX2,80486DX4, 80486S series, Pentium-based and Cyrix 6x86 series designs.

Independent PCI bus clock and 1/2 CPUCLK make this chip mostly suitable for asychronous PCI or synchronous PCI design.