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ICS9248YF-99 PDF预览

ICS9248YF-99

更新时间： 2024-09-24 22:55:27
品牌 Logo 应用领域
矽成 - ICSI /
页数 文件大小 规格书
13页 451K
描述
Frequency Generator & Integrated Buffers for Celeron & PII/III⑩

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中文翻译

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ICS9248YF-99 数据手册

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ICS9248-99  
Integrated  
Circuit  
Preliminary Product Preview  
Systems, Inc.  
Frequency Generator & Integrated Buffers for Celeron & PII/III™  
Recommended Application:  
810/810E style chipset  
Pin Configuration  
Output Features:  
•
2- CPUs @2.5V @ 150MHz (up to 200MHz. achievable  
through I2C)  
•
9 - SDRAM @ 3.3V @ 150MHz (up to 200MHz.  
achievable through I2C)  
•
•
•
•
•
•
8 - PCICLK @ 3.3V  
1 - IOAPIC @ 2.5V,  
2 - 3V66MHz @ 3.3V  
2- 48MHz, @ 3.3V fixed.  
1- 24/48MHz, @ 3.3V  
1- REF @3.3V, 14.318MHz.  
Features:  
•
•
•
Up to 200.4MHz frequency support  
Support FS0-FS3 trapping status bit for I2C read back.  
Support power management: Power down Mode form I2C  
programming.  
•
•
Spread spectrum for EMI control ( ± 0.25% center).  
FS0, FS1, FS2, FS3 must have a internal 120K pull-Down  
to GND.  
48-Pin 300mil SSOP  
* These inputs have a 120K pull down to GND.  
•
Uses external 14.318MHz crystal  
1 These are double strength.  
Skew Specifications:  
•
•
•
•
•
CPU – CPU: <175ps  
SDRAM - SDRAM: < 250ps  
3V66 – 3V66: <175ps  
PCI – PCI: <500ps  
For group skew specifications, please refer to group  
timing relationship table.  
Block Diagram  
Functionality  
PCICLK  
(3V66*  
1/2)  
IOAPIC  
(PCI*  
1/2)  
IOAPIC  
(PCI)  
(MHz)  
CPU  
(MHz)  
SDRAM 3V66  
(MHz) (MHz)  
FS3 FS2 FS1 FS0  
(MHz)  
(MHz)  
75.33 113.00 75.33  
125.00 125.00 83.33  
129.00 129.00 86.00  
150.29 113.00 75.33  
150.00 150.00 100.00  
112.00 112.00 74.67  
145.00 145.00 96.67  
143.64 108.00 72.00  
68.30 102.50 68.33  
105.00 105.00 70.00  
138.00 138.00 92.00  
140.00 105.00 70.00  
66.67 100.00 66.67  
100.00 100.00 66.67  
133.60 133.60 89.07  
133.33 100.00 66.67  
37.67  
41.67  
43.00  
37.67  
50.00  
37.33  
48.33  
36.00  
34.17  
35.00  
46.00  
35.00  
33.33  
33.33  
44.53  
33.33  
18.83  
20.83  
21.50  
18.83  
25.00  
18.67  
24.17  
18.00  
17.08  
17.50  
23.00  
17.50  
16.67  
16.67  
22.27  
16.67  
37.67  
41.67  
43.00  
37.67  
50.00  
37.33  
48.33  
36.00  
34.17  
35.00  
46.00  
35.00  
33.33  
33.33  
44.53  
33.33  
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PRODUCT PREVIEW documents contain information on new  
products in the sampling or preproduction phase of development.  
Characteristic data and other specifications are subject to change  
without notice.  
9248- 99 Rev A 8/27/99  
Third party brands and names are the property of their respective owners.  
1234567...13

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