ICS950223

Features:

Output Features:
 3 - Pairs of differential CPU clocks (differential current mode)
 3 - 3V66 @ 3.3V
 10 - PCI @ 3.3V
 1 - 48MHz @ 3.3V fixed
 2 - REF @ 3.3V, 14.318MHz
 1 - 48_66MHz selectable @ 3.3V fixed
 1 - 24_48MHz selectable @ 3.3V
Features/Benefits:
 QuadRomTM frequency selection.
 Programmable output frequency.
 Programmable asynchronous 3V66 & PCI frequency.
 Programmable output divider ratios.
 Programmable output rise/fall time.
 Programmable output skew.
 Programmable spread percentage for EMI control.
 Watchdog timer technology to reset system if system malfunctions.
 Programmable watchdog safe frequency.
 Support I2C Index read/write and block read/write operations.
 Uses external 14.318MHz reference input.


Application

Brookdale and Brookdale-G chipset with P4 processor.


Pinout




Specifications

 CPU Output Jitter <150ps
 3V66 Output Jitter <250ps
 CPU Output Skew <100ps


Description

The ICS950223 is a single chip clock solution for desktop designs using the Intel Brookdale chipset with PC133 or DDR memory.It provides all necessary clock signals for such a system.
The ICS950223 is part of a whole new line of ICS clock generators and buffers called TCH™ (Timing Control Hub). ICS is the first to introduce a whole product line which offers full programmability and flexibility on a single clock device. This part incorporates ICS's newest clock technology which offers more robust features and functionality. Employing the use of a serially programmable I2C interface, this ICS950223 can adjust the output clocks by configuring the frequency setting, the output divider ratios, selecting the ideal spread percentage, the output skew, the output strength, and enabling/disabling each individual output clock. TCH also incorporates ICS's Watchdog Timer technology and a reset feature to provide a safe setting under unstable system conditions. M/N control can configure output frequency with resolution up to 0.1MHz increment. With all these programmable features ICS's, TCH makes mother board testing, tuning and improvement very simple.