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ICS9248-127

Features: • Up to 124MHz frequency support.• Spread Spectrum for EMI control 0 to -0.5% down spread and ±0.25% center spread• Serial I2C interface for Power Management, Frequency Select, Spread Spectrum.• Provides the following system clocks- 4-CPUs @ 3.3V, up to 124MHz.- 1...

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SeekIC No. : 004371227 Detail

ICS9248-127: Features: • Up to 124MHz frequency support.• Spread Spectrum for EMI control 0 to -0.5% down spread and ±0.25% center spread• Serial I2C interface for Power Management, Frequency S...

ICS9248-127 Data Sheet

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Part Number:
ICS9248-127
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:

• Up to 124MHz frequency support.
• Spread Spectrum for EMI control 0 to -0.5% down spread and ±0.25% center spread
• Serial I2C interface for Power Management, Frequency Select, Spread Spectrum.
• Provides the following system clocks
- 4-CPUs @ 3.3V, up to 124MHz.
- 13-SDRAMs @3.3V, up to 124MHz (including SDRAM_F)
- 6-PCI (including 1 free running, PCICLK_F) @3.3V, CPU/2 or CPU/3.
- 1-24MHz @3.3V fixed.
- 1-48MHz @3.3V fixed.
- 2-REF @3.3V, 14.318MHz.
• Efficient Power management scheme through PCI and STOP CLOCKS.


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
Case Temperature . . . . . . . . . . .  . . . . . . . . . . 115°C
Storage Temperature . . . . . . . . .  65°C to +150°C


Description

The ICS9248-127 is the single chip clock solution for Desktop designs using the VIA MVP4 and Aladdin 7 style chipset. It provides all necessary clock signals for such a system. Spread spectrum may be enabled through I2C programming.

Spread spectrum of the ICS9248-127 typically reduces system EMI by 8dB to 10dB. This simplifies EMI qualification without resorting to board design iterations or costly shielding. The ICS9248- 127 employs a proprietary closed loop design, which tightly controls the percentage of spreading over process and temperature variations.




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