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ICS9248-96 数据表(PDF) 1 Page - Integrated Circuit Systems

部件名 ICS9248-96
功能描述  Frequency Generator & Integrated Buffers for Celeron & PII/III?
PDF  12 Pages
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制造商  ICST [Integrated Circuit Systems]
网页  http://www.icst.com
标志 ICST - Integrated Circuit Systems

ICS9248-96 数据表(HTML) 1 Page - Integrated Circuit Systems

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Integrated
Circuit
Systems, Inc.
ICS9248-96
0311D—04/23/04
Block Diagram
Recommended Application:
810/810E type chipset.
Output Features:
•
2- CPUs @ 2.5V, up to 166.5MHz.
•
9 - SDRAM @ 3.3V, up to 155MHz including
1 free running
•
8 - PCICLK @ 3.3V
•
1 - IOAPIC @ 2.5V,
•
2 - 3V66MHz @ 3.3V, 2X PCI MHz
•
2 - 48MHz, @ 3.3V fixed.
•
1 - 24/48MHz, @3.3V selectable by I
2C
•
1 - REF @v3.3V, 14.318MHz.
Features:
•
Up to 166.5MHz frequency support
•
Support FS0-FS3 strapping status bit for I
2C read
back.
•
Support power management: Through Power down
Mode from I
2C programming.
•
Spread spectrum for EMI control ( ± 0.25% center).
•
Uses external 14.318MHz crystal
Skew Specifications:
•
CPU – CPU: <175ps
•
SDRAM - SDRAM: < 250ps
•
3V66 – 3V66: <175ps
•
PCI – PCI: <500ps
•
CPU-SDRAM<500ps
•
For group skew specifications, please refer to group
timing relationship table.
Functionality
Pin Configuration
48-Pin 300mil SSOP
* These inputs have a 120K pull up to VDD.
** 60K pull-up to VDD on indicated input
1 These are double strength.
Frequency Generator & Integrated Buffers for Celeron & PII/III™
Additional
frequencies
selectable
through
I
2C
programming.
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