PCK2010RA

NOTES:
1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
2. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.

The PCK2010RA is a clock generator (frequency synthesizer) chip for a Pentium II and other similar processors.

The PCK2010RA has four CPU clock outputs at 2.5 V, two CPUDIV2 clock outputs running at 1/2 CPU clock frequenc (66 MHz or 50 MHz depending on the state of SEL133/100) and four 3V66 clocks running at 66MHz. There are eight PCI clock outputs running at 33 MHz. One of the PCI clock outputs is free-running. Additionally, the part has three 2.5 V IOAPIC clock outputs at 16.67 MHz and two 3.3 V reference clock outputs at 14.318 MHz. All clock outputs meet Intel's drive strength, rise/fall time, jitter, accuracy, and skew requirements.

The part possesses dedicated power-down, CPUSTOP, and PCISTOP input pins for power management control. These inputs of PCK2010RA are synchronized on-chip and ensure glitch-free output transitions. When the CPUSTOP input is asserted, the CPU clock outputs and 3V66 clock outputs are driven LOW. When the PCISTOP input is asserted, the PCI clock outputs of PCK2010RA are driven LOW.