The ICS9159-06 is a low cost frequency generator designed specifically for Pentium systems. The integrated buffer minimizes skew and provides the early CPU clock required by some chipsets such as the OPTi VIPER.A 14.318 MHz XTAL oscillator provides the reference clock to generate standard Pentium frequencies. The CPU clock makes gradual frequency transitions without violating the PLL timing of internal microprocessor clock multipliers.