ICS9148-10 Datasheet PDF | Integrated Circuit Systems

Integrated Circuit Systems ICS9148-10

The ICS9148-10 is a Clock Synthesizer chip for Pentium and PentiumPro CPU based Desktop/Notebook systems that will provide all necessary clock timing. The ICS9148-10 accepts a 14.318MHz reference crystal or clock as its input and runs on a 3.3V core supply.

Part No.	ICS9148-10
Datasheet	ICS9148-10 Download
Manufacturer	Integrated Circuit Systems
Description	Pentium/ProTM System Clock Chip
Buy	Stock & Price

GENERAL DESCRIPTION

FEATURES

include four CPU and eight PCI clocks. Three reference outputs are available equal to the crystal frequency. Additionally, the device meets the Pentium power-up stabilization requirement, assuring that CPU and PCI clocks are stable within 2ms after power-up. PD# pin enables low power mode by stopping crystal OSC and PLL stages. Other power management features include CPU_STOP#, which stops CPU (0:3) clocks, and PCI_STOP#, which stops PCICLK (0:6) clocks. High drive CPUCLK outputs typically provide greater than 1 V/ns slew rate into 20pF loads. PCICLK outputs typically provide better than 1V/ns slew rate into 30pF loads while maintaining 50±5% duty cycle. The REF clock outputs typically provide better than 0.5V/ns slew rates.

FEATURES

Generates system clocks for CPU, IOAPIC, PCI, plus 14.314 MHz REF (0:2), USB, and Super I/O Supports single or dual processor systems Supports Spread Spectrum modulation for CPU & PCI clocks, down spread -1% Skew from CPU (earlier) to PCI clock (rising edges for 100/33.3MHz) 1.5 to 4ns Two fixed outputs at 48MHz.