ICS9159-06

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.

Asynchronous 33.3 MHz PCI bus operation of the ICS9159-06 is supported, in-dependent of the CPU operating frequency. Green PC systems are supported through power-down, doze, and glitch-free stop clock modes.