ICS9248-157 Overview
The ICS9248-157 is the Main clock solution for Notebook designs using the Intel ALI1621/1632M style chipset. Along with an SDRAM buffer such as the ICS9179-03, it provides all necessary clock signals for such a system. Spread spectrum may be enabled by driving pin 26, SPREAD# active (Low) at power-on.
ICS9248-157 Key Features
- CPUs @2.5V, up to 140MHz
- PCI @3.3V, (including one free running)
- 48MHz, @3.3V fixed
- REF @3.3V, 14.318MHz. Features
- Up to 140 MHz frequency support
- Support power management: CPU, PCI stop and Power down
- Spread spectrum for EMI control (0.5% down spread)
- Uses external 14.318MHz crystal
- FS pins for frequency select Key Specifications
- CPU: <175ps