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ICS9248-136

Features: • 1 - Differential pair open drain CPU clock• 1 - Single-ended open drain CPU clock• 13 - SDRAM @ 3.3V• 6- PCI @3.3V,• 2 - AGP @ 3.3V• 1- 48MHz, @3.3V fixed.• 1- 24/48MHz, @3.3V selectable by I2C (Default is 24MHz)• 2- REF @3.3V, 14.318MHz....

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SeekIC No. : 004371231 Detail

ICS9248-136: Features: • 1 - Differential pair open drain CPU clock• 1 - Single-ended open drain CPU clock• 13 - SDRAM @ 3.3V• 6- PCI @3.3V,• 2 - AGP @ 3.3V• 1- 48MHz, @3.3V f...

ICS9248-136 Data Sheet

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Part Number:
ICS9248-136
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 clock
• 1 - Single-ended open drain CPU clock
• 13 - SDRAM @ 3.3V
• 6- PCI @3.3V,
• 2 - AGP @ 3.3V
• 1- 48MHz, @3.3V fixed.
• 1- 24/48MHz, @3.3V selectable by I2C (Default is 24MHz)
• 2- REF @3.3V, 14.318MHz.
• Up to 166MHz frequency support
• Support FS0-FS3 trapping status bit for I2C read back.
• Support power management: CPU, PCI, SDRAM stop and Power down Mode from I2C programming.
• Spread spectrum for EMI control (0 to -0.5%, ± 0.25%).
• 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
Case Temperature. . . . . . . . . . . .  . . . . . . . . . . . . 115°C
Storage Temperature . . . . . . . . . . . . 65°C to +150°C


Description

The ICS9248-136 is the single chip clock solution for Desktop/Notebook designs using the SIS 630S style chipset. It
provides all necessary clock signals 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 without resorting to board design iterations or costly shielding. The ICS9248-136 employs a proprietary closed loop design, which tightly controls the percentage of spreading over process and emperature variations.

Serial programming I2C interface of the ICS9248-136 allows changing functions, stop clock programming and frequency selection.




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