AV9248-128 - Frequency Generator & Integrated Buffers - ICST 数据手册 ( 数据表 )

General Description
The ICS9248-128 is the single chip clock solution for Desktop/Notebook designs using the SIS style chipset. It provides all necessary clock signals for such a system.

FEATUREs:
• Up to 133MHz frequency support
• Support power management: CPU, PCI, SDRAM stop and Power down Mode from I2C programming.
• Spread spectrum for EMI control ( ± 0.25% center spread & 0 to -0.5% down spread).
• Uses external 14.318MHz crystal
• FS pins for frequency select

Output Features:
• - 3 CPU @ 2.5V/3.3V up to 133.3 MHz.
• - 6 PCI @ 3.3V (including 1 free-running)
• - 13 SDRAMs @ 3.3V up to 133.3MHz.
• - 3 REF @ 3.3V, 14.318MHz
• - 1 clock @ 24/14.3 MHz selectable output for SIO
• - 1 Fixed clock at 48MHz (3.3V)
• - 1 IOAPIC @ 2.5V / 3.3V