General Description

The ICS9148-82 generates all clocks required for high speed RISC or CISC microprocessor systems such as Intel PentiumPro or Cyrix. Eight different reference frequency multiplying factors are externally selectable with smooth frequency transitions.

Features

• Generates the following system clocks:

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

- 6 PCI(3.3V) @ 33.3MHz

- 3AGP(3.3V) @ 2 x PCI

- 13 SDRAMs(3.3V) up to 100MHz

- 1 REF (3.3V) @ 14.318MHz

• Skew characteristics:

- CPU - CPU ≤ 250ps

- CPU(early) - PCI : 1-4ns, Center 2.6ns

- AGP - PCI: 500ps

• Supports Spread Spectrum modulation & I2C programming for Power Management, Frequency Select

• Efficient Power management scheme through PCI and CPU STOP CLOCKS.

• Uses external 14.318MHz crystal

• 48 pin 300mil SSOP.