ICS9148-93

Features: Generates the following system clocks:-4 CPU(2.5V/3.3V) upto 100MHz.- 6 PCI(3.3V) @ 33.3MHz- 2AGP(3.3V) @ 2 x PCI- 12 SDRAMs(3.3V) @ either CPU or AGP- 2 REF (3.3V) @ 14.318MHz Skew characteristics:- CPU CPU<250ps- SDRAM – SDRAM < 250ps- CPU – SDRAM < 250ps- CPU(early)...

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SeekIC No. : 004371180 Detail

ICS9148-93: Features: Generates the following system clocks:-4 CPU(2.5V/3.3V) upto 100MHz.- 6 PCI(3.3V) @ 33.3MHz- 2AGP(3.3V) @ 2 x PCI- 12 SDRAMs(3.3V) @ either CPU or AGP- 2 REF (3.3V) @ 14.318MHz Skew charac...

floor Price/Ceiling Price

Part Number:
ICS9148-93
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:

 Generates the following system clocks:- 4 CPU(2.5V/3.3V) upto 100MHz.- 6 PCI(3.3V) @ 33.3MHz- 2AGP(3.3V) @ 2 x PCI- 12 SDRAMs(3.3V) @ either CPU or AGP- 2 REF (3.3V) @  14.318MHz
Skew characteristics:- CPU  CPU<250ps- SDRAM – SDRAM < 250ps- CPU – SDRAM < 250ps- CPU(early)  PCI : 1-4ns
Supports Spread Spectrum modulation +0.25, ±0.6%
Serial I2C interface for Power Management, Frequency Select, Spread Spectrum.
Efficient Power management scheme through PCI and CPU STOP CLOCKS.
Uses external 14.318MHz crystal
48 pin 300mil SSOP.



Pinout

  Connection Diagram


Specifications

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . ..............................7.0 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
Case Temperature . . . . . . . . . . . . . . . . . . . . . . . . ..........................115°C



Description

The ICS9148-93 is the single chip clock solution for Desktop/ Notebook designs using the VIA MVP3 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 ICS9148-93 employs a proprietary closed loop design, which tightly controls the percentage of spreading over process and
temperature variations. Serial programming I2C interface allows changing functions, stop clock programming and frequency selection. The SD_SEL latched input of the ICS9148-93 allows the SDRAM frequency to follow the CPUCLK frequency(SD_SEL=1) or the AGP clock frequency(SD_SEL=0).




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