The ICS9248-61 is the Main clock solution for Notebook designs using the Intel 440BX style chipset. Along with an SDRAM buffer such as the ICS9179-03, it provides all necessary clock signals for such a system.
Generates the following system clocks:
- 2CPU(2.5V) up to 100MHz.
- 7 PCI(3.3V) @ 33.3MHz (Includes one free running).
- 2 REF clks Fixed (3.3V) 48MHz at 14.318MHz.
- CPU CPU<175ps
- PCI PCI < 250ps
- PCI_E (early) PCI = 2.1ns
- CPU(early) PCI = 1.5ns 4ns
Supports Spread Spectrum modulation for CPU and PCI clocks, 0.5% down spread
Efficient Power management scheme through stop clocks and power down modes.
Uses external 14.318MHz crystal, no external load cap required for CL=18pF crystal.
28 pin 209mil SSOP.