ICS9148YF-37LF-T中文资料瑞萨数据手册PDF规格书

特性 Features

• Generates the following system clocks:

- 4 CPU(2.5V/3.3V) upto 100MHz.

- 6 PCI(3.3V) @ 33.3MHz

- 2AGP(3.3V) @ 2 x PCI

- 12 SDRAMs(3.3V) @ either CPU or AGP

- 2 REF (3.3V) @ 14.318MHz

• Skew characteristics:

- CPU – CPU<250ps

- SDRAM – SDRAM < 250ps

- CPU – SDRAM < 250ps

- CPU–AGP: < 1ns

- CPU(early) – PCI : 1-4ns

• Supports Spread Spectrum modulation +0.25, ±0.6

• Serial I2C interface for Power Management,

Frequency Select, Spread Spectrum.

• Efficient Power management scheme through PCI and

CPU STOP CLOCKS.

• Uses external 14.318MHz crystal

• 48 pin 300mil SSOP.