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ICS9248YG-185-T PDF预览

ICS9248YG-185-T

更新时间： 2024-09-26 07:17:35
品牌 Logo 应用领域
艾迪悌 - IDT 光电二极管
页数 文件大小 规格书
11页 100K
描述
Processor Specific Clock Generator, 133.33MHz, PDSO28, 4.40 MM, 0.65 MM PITCH, TSSOP-28

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ICS9248YG-185-T 数据手册

 浏览型号ICS9248YG-185-T的Datasheet PDF文件第2页浏览型号ICS9248YG-185-T的Datasheet PDF文件第3页浏览型号ICS9248YG-185-T的Datasheet PDF文件第4页浏览型号ICS9248YG-185-T的Datasheet PDF文件第5页浏览型号ICS9248YG-185-T的Datasheet PDF文件第6页浏览型号ICS9248YG-185-T的Datasheet PDF文件第7页 
Integrated  
Circuit  
Systems, Inc.  
ICS9248-185  
Frequency Generator & Integrated Buffers for PENTIUM/ProTM  
& K6  
RecommendedApplication:  
VIAPM133chipset  
OutputFeatures:  
Pin Configuration  
•
•
•
•
•
2 - CPUs @ 2.5V  
5-SDRAM@3.3V  
3-PCI@3.3V,  
1-48MHz, @3.3Vfixed.  
2-REF@3.3V,14.318MHz.  
VDD  
REF0  
1
2
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
REF1/FREE_SEL*1  
VDDL  
GND  
X1  
X2  
3
4
5
CPUCLK0/_F  
CPUCLK1  
GND  
VDDPCI  
1*PCICLK_F  
GND  
6
7
8
9
10  
11  
12  
13  
14  
CLK_STOP#  
SDRAM0/_F  
SDRAM1  
SDRAM2  
GND  
VDDSDR  
SDRAM3  
SDRAM4  
VDD48  
Features:  
•
•
•
•
•
Up to 133MHz frequency support  
1, 2FS1/PCICLK0  
BUFFER_IN  
1PCICLK1  
PCI_STOP#  
GND  
Supportpowermanagement:PCI_STOP&CLK_STOP  
Spread spectrum for EMI control (-0.5% down spread).  
Usesexternal14.318MHzcrystal  
FS pins for frequency select  
*FS0/48MHz  
KeySpecifications:  
•
•
•
•
•
CPU–PCISkew:1-4ns  
PCI–PCISkew:±500ps  
CPU–CPUSkew:±175ps  
CPU Jitter: 250ps (cyc-cyc)  
PCI Jitter: 500ps (cyc-cyc)  
28-Pin SSOP/TSSOP  
* Internal Pull-up Resistor of 120K to VDD  
1. These pin will have 2X drive strength  
2. FS1 is a pull down  
Block Diagram  
PLL2  
48MHz  
X1  
X2  
XTAL  
OSC  
REF (1:0)  
CPUCLK1  
2
Frequency Select  
CPU  
DIVDER  
Stop  
Stop  
PLL1  
Spread  
Spectrum  
CPUCLK0/_F  
Down  
Spread  
FS1  
FS0 CPUCLK PCICLK  
BUFFER_IN  
SDRAM (4:1)  
SDRAM0/_F  
4
2
0
0
1
1
0
1
0
1
66.66  
100.00  
97.00  
33.33  
33.33  
32.33  
33.33  
-0.5%  
-0.5%  
-0.5%  
-0.5%  
Control  
Logic  
PCI  
DIVDER  
PCI_STOP#  
CLK_STOP#  
FS (1:0)  
Stop  
PCICLK (1:0)  
PCICLK_F  
Config.  
Reg.  
133.33  
Pentium is a trademark of Intel Corporation  
I2C is a trademark of Philips Corporation  
9248-185 RevC - 10/25/01  
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  
information being relied upon by the customer is current and accurate.  
1234567...11

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