Pentium/Pro/IITM System Clock Chip

The ICS9248-55 is a Clock Synthesizer chip for Pentium and PentiumPro CPU based Desktop/Notebook systems that will provide all necessary Clock Timing Features include four CPU and eight PCI Clocks Three reference outputs are available equal to the crystal frequency. Additionally, the device meets the Pentium power-up stabilization requirement, assuring that CPU and PCI Clocks are stable wit hin 2ms after power-up. Output Features: Generates system Clocks for CPU, IOAPIC, PCI plus 14.314 MHz REF (0:2), USB and Super I/O Supports single or dual processor systems Supports Spread Spectrum modulation for CPU & PCI Clocks down spread -0.5% Skew from CPU (earlier) to PCI Clock (rising edges for 100/33.3MHz) 1.5 to 4ns Two fixed outputs at 48MHz. Separate 2.5V and 3.3V supply pins 2.5V or 3.3V output: CPU, IOAPIC 3.3V outputs: PCI REF, 48MHz No power supply sequence requirements Uses external 14.318MHz crystal, no external load cap required for CL=18pF crystal 48 pin 300 mil SSOP By Integrated Device Technology
ICS9248-55 's PackagesICS9248-55 's pdf datasheet
ICS9248BF-55 SSOP
ICS9248BF-55T SSOP




ICS9248-55 Pinout, Pinouts
ICS9248-55 pinout,Pin out
This is one package pinout of ICS9248-55,If you need more pinouts please download ICS9248-55's pdf datasheet.

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