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ICS9248-135

Features: • 3- CPUs @ 2.5/3.3V, up to 166MHz.• 10 - SDRAM @ 3.3V, up to 166MHz including 2 SDRAM_F's• 7- PCI @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&...

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ICS9248-135: Features: • 3- CPUs @ 2.5/3.3V, up to 166MHz.• 10 - SDRAM @ 3.3V, up to 166MHz including 2 SDRAM_F's• 7- PCI @3.3V,• 1- 48MHz, @3.3V fixed.• 1- 24/48MHz, @3.3V selectab...

ICS9248-135 Data Sheet

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Part Number:
ICS9248-135
Supply Ability:
5000

Price Break

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

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Product Details

Description



Features:

• 3- CPUs @ 2.5/3.3V, up to 166MHz.
• 10 - SDRAM @ 3.3V, up to 166MHz including 2 SDRAM_F's
• 7- PCI @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 form I2C programming.
• Spread spectrum for EMI control (0 to -0.5%, ± 0.25%).
• FS0, FS1, FS3 must have a internal 120K pull-Down to GND.
• 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 ICS9248-135 is the single chip clock solution for Desktop/Notebook designs using the SIS 540/630 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 ICS9248-135 employs a proprietary closed loop design, which tightly controls the percentage of spreading over process and temperature variations.

Serial programming I2C interface of the ICS9248-135 allows changing functions, stop clock programming and frequency selection.




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