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ICS9250-08

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
15页 373K
描述
Frequency Generator & Integrated Buffers for Celeron & PII/III⑩

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ICS9250-08 数据手册

 浏览型号ICS9250-08的Datasheet PDF文件第2页浏览型号ICS9250-08的Datasheet PDF文件第3页浏览型号ICS9250-08的Datasheet PDF文件第4页浏览型号ICS9250-08的Datasheet PDF文件第5页浏览型号ICS9250-08的Datasheet PDF文件第6页浏览型号ICS9250-08的Datasheet PDF文件第7页 
Integrated  
Circuit  
Systems, Inc.  
ICS9250-08  
Frequency Generator & Integrated Buffers for Celeron & PII/III™  
Recommended Application:  
Pin Configuration  
BX, Appollo Pro 133 type of chip set.  
Output Features:  
VDDREF  
*FS2/REF1  
*PCI_STOP/REF0  
GND  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
56  
55  
54  
53  
52  
51  
50  
49  
48  
47  
46  
45  
44  
43  
42  
41  
40  
39  
38  
37  
36  
35  
34  
33  
32  
31  
30  
29  
VDDLIOAPIC  
IOAPIC0  
IOAPIC_F  
GND  
CPUCLK_F  
CPUCLK1  
VDDLCPU  
CPUCLK2  
GND  
CPU_STOP#  
SDRAM_F  
VDDSDR  
SDRAM0  
SDRAM1  
GND  
SDRAM2  
SDRAM3  
SDRAM4  
SDRAM5  
VDDSDR  
SDRAM6  
SDRAM7  
GND  
•
•
•
•
•
•
•
3 - CPUs @2.5V, up to 150MHz.  
17 - SDRAM @ 3.3V, up to 150MHz.  
7 - PCI @3.3V  
2 - IOAPIC @ 2.5V  
1 - 48MHz, @3.3V fixed.  
1 - 24MHz @ 3.3V  
X1  
X2  
VDDPCI  
*MODE/PCICLK_F  
**FS3/PCICLK0  
GND  
2 - REF @3.3V, 14.318MHz.  
PCICLK1  
PCICLK2  
PCICLK3  
PCICLK4  
VDDPCI  
PCICLK5  
BUFFERIN  
SDRAM11  
SDRAM10  
VDDSDR  
SDRAM9  
SDRAM8  
GND  
Features:  
•
•
Up to 150MHz frequency support  
Support power management: CPU, PCI, stop and Power  
down Mode form I2C programming.  
•
•
Spread spectrum for EMI control (0 to -0.5%, ± 0.25%).  
Uses external 14.318MHz crystal  
Key Specifications:  
•
•
•
•
CPU – CPU: <175ps  
CPU – PCI: min = 1ns max = 4ns  
PCI – PCI: <250ps  
SDRAM15  
SDRAM14  
GND  
SDRAM12  
SDRAM13  
VDD48  
24MHz/FS0*  
48MHz/FS1*  
SDRAM - SDRAM: <500ps  
SDATA  
SCLK  
I2C  
{
56-Pin SSOP  
* Internal Pull-up Resistor of 240K to 3.3V on indicated inputs  
** Internal Pull-down resistor of 240K to GND on indicated inputs.  
Block Diagram  
PLL2  
48MHz  
24MHz  
Functionality  
÷2  
CPU  
(MHz)  
133  
FS3  
FS2  
FS1  
FS0  
PCICLK (MHz)  
IOAPIC_F  
X1  
X2  
XTAL  
OSC  
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
33.3 (CPU/4)  
31 (CPU/4)  
37.5 (CPU/4)  
35 (CPU/4)  
STOP  
IOAPIC0  
124  
REF [1:0]  
150  
140  
105  
110  
115  
120  
100.3  
133  
112  
103  
66.8  
83.3  
75  
2
CPUCLK_F  
CPUCLK [2:1]  
PLL1  
Spread  
Spectrum  
1
35 (CPU/3)  
36.67 (CPU/3)  
38.33 (CPU/3)  
40.00 (CPU/3)  
33.43 (CPU/3)  
44.33 (CPU/3)  
37.33 (CPU/3)  
34.33 (CPU/2)  
33.40 (CPU/2)  
41.65 (CPU/2)  
37.5 (CPU/2)  
41.33 (CPU/2)  
STOP  
STOP  
2
FS[3:0]  
MODE  
LATCH  
PCI  
CLOCK  
DIVDER  
PCICLK [5:0]  
PCICLK_F  
4
6
POR  
CPU_STOP#  
PCI_STOP#  
SCLK  
Control  
Logic  
Config.  
Reg.  
I2  
C
SDRAM [15:0]  
SDRAM_F  
STOP  
{
16  
SDATA  
124  
BUFFERIN  
ICS reserves the right to make changes in the device data identified in  
this publication without further notice. ICS advises its customers to  
obtain the latest version of all device data to verify that any  
9250-08 Rev H 10/8/99  
Third party brands and names are the property of their respective owners.  
information being relied upon by the customer is current and accurate.  
1234567...15

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