AV9148F-75-T - Frequency Generator & Integrated Buffers for Mother Boards - ICST 数据手册 ( 数据表 )

General Description
The ICS9148-75 generates all clocks required for high speed RISC or CISC microprocessor systems such as Intel PentiumPro™, AMD™ or Cyrix™. Sixteen different reference frequency multiplying factors are externally selectable with smooth frequency transitions.

FEATUREs
• Generates the following system clocks:
   - 3 CPU(2.5V/3.3V) up to 100MHz.
   - 6 PCI(3.3V) @ 33.3MHz (including one free running PCICLK)
   - 3AGP(3.3V) @ 2 x PCI
   - 13 SDRAMs(3.3V) up to 100MHz
   - 1 REF (3.3V) @ 14.318MHz
   - 1 - 48MHz (3.3V) fixed
• Skew characteristics:
   - CPU – CPU<250ps
   - CPU(early) – PCI : 1-4ns
   - AGP – PCI: 250ps
   - PCI – PCI <500ps
• Supports Spread Spectrum modulation & I2C programming for Power Management, Frequency Select
• Efficient Power management scheme through power down PCI, AGP and CPU_STOP clocks.
• Uses external 14.318MHz crystal
• 48 pin 300mil SSOP.