ICS9248-114

Features: • 1 - Differential pair open drain CPU clocks• 1 - Single-ended open drain CPU clock• 13 - SDRAM @ 3.3V• 6 - PCI @3.3V,• 1 - 48MHz, @3.3V fixed.• 1 - 24/48MHz @ 3.3V• 2 - REF @3.3V, 14.318MHz.• Up to 155MHz frequency support• Support ...

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ICS9248-114 Picture
SeekIC No. : 004371225 Detail

ICS9248-114: Features: • 1 - Differential pair open drain CPU clocks• 1 - Single-ended open drain CPU clock• 13 - SDRAM @ 3.3V• 6 - PCI @3.3V,• 1 - 48MHz, @3.3V fixed.• 1 - 24...

floor Price/Ceiling Price

Part Number:
ICS9248-114
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/21

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Product Details

Description



Features:

• 1 - Differential pair open drain CPU clocks
• 1 - Single-ended open drain CPU clock
• 13 - SDRAM @ 3.3V
• 6 - PCI @3.3V,
• 1 - 48MHz, @3.3V fixed.
• 1 - 24/48MHz @ 3.3V
• 2 - REF @3.3V, 14.318MHz.
• Up to 155MHz frequency support
• Support power management: CPU stop and Power down Mode from I2C programming.
• Spread spectrum for EMI control (0 to -0.5% down spread, ± 0.25% center spread).
• Uses external 14.318MHz crystal



Pinout

  Connection Diagram


Specifications

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Logic Inputs . . . . . . . . . . . .. . GND 0.5 V to VDD +0.5 V
Ambient Operating Temperature . . . . . . . 0°C to +70°C
Storage Temperature . . . . . . . . . . . . 65°C to +150°C



Description

The ICS9248-114 is a main clock synthesizer chip for AMD-K7 based systems with VIA style chipset. This provides all clocks required for such a system. Spread spectrum may be enabled through I2C programming. Spread spectrum typically reduces system EMI by 8dB to 10dB.

This simplifies EMI qualification of the ICS9248-114 without resorting to board design iterations or costly shielding. The ICS9248-114 employs a proprietary closed loop design, which tightly controls the percentage of spreading over process and emperature variations.

Serial programming I2C interface of the ICS9248-114 allows changing functions, stop clock programming and frequency selection.




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