PCK2022R

INTEGRATED CIRCUITS PCK2022R CK00 (100/133 MHz) spread spectrum differential system clock generator Product specification Supersedes data of 2000 Aug 08 2000 Nov 13 Philips Semiconductors Philips Semiconductors Product specification CK00 (100/133 MHz) spread spectrum differential system clock generator PCK2022R FEATURES 3.3 V operation Eight differential CPU clock pairs One IO clock at 33 MHz and 66 MHz Two 48 MHz clocks at 3.3 V One 14.318 MHz reference clock Power management control pins Host clock jitter less than 200 ps cycle-to-cycle Host clock skew less than 150 ps pin-to-pin Spread Spectrum capability DESCRIPTION The PCK2022R is a clock synthesizer/driver for a Pentium III™ and other similar processors The PCK2022R has eight differential pair CPU current source outputs, one 33/66 MHz output which is configurable on power-up, two 48 MHz clocks which can be disabled on power-up, and one 3.3 V reference clock at 14.318 MHz which can also be disabled on power-up. All clock outputs meet Intel’s drive strength, rise/fall times, jitter, accuracy, and skew requirements. The part possesses a dedicated power-down input pin for power management control. This input is synchronized on chip, and ensures glitch-free output transitions. In addition, the part can be configured to disable the 48 MHz outputs for lower power operation and an increase in the performance of the functioning outputs. The IOCLK and REFCLK can also be disabled for the highest performan...