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ICS9248-143 PDF预览

ICS9248-143

更新时间： 2024-09-28 22:11:03
品牌 Logo 应用领域
矽成 - ICSI /
页数 文件大小 规格书
16页 506K
描述
Frequency Generator & Integrated Buffers for PENTIUM II/IIITM & K6

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中文翻译

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ICS9248-143 数据手册

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Integrated  
Circuit  
Systems, Incꢀ  
ICS9248-143  
Frequency Generator & Integrated Buffers for PENTIUM II/IIITM  
& K6  
RecommendedApplication:  
Pin Configuration  
440BX, MX,VIAApollo Pro 133,Apollo Pro Media  
or MVP4 style chip set, for Note book applications'  
OutputFeatures:  
48  
47  
46  
45  
44  
43  
42  
41  
40  
39  
38  
37  
36  
35  
34  
33  
32  
31  
30  
29  
28  
27  
26  
25  
VDDREF  
*SPREAD/REF0  
GNDREF  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
REF1/FS2*  
VDDLCPU  
CPUCLK_F  
CPUCLK0  
GNDLCPU  
CPUCLK1  
CPUCLK2  
CLK_STOP#  
GNDSDR  
SDRAM_F  
SDRAM0  
SDRAM1  
VDDSDR  
SDRAM2  
SDRAM3  
GNDSDR  
SDRAM4  
•
4-CPUs@2'5V/3'3V  
including 1 free running CPUCLK_F  
X1  
X2  
VDDPCI  
•
•
•
•
•
•
9 - SDRAM @ 3'3V  
7 - PCI @ 3'3V, including 1 free running PCICLK_F  
1-PCIEarly@3'3V  
1-48MHz, @3'3Vfixed'  
1-24/48MHz @3'3V  
*CPU2.5_3.3#/PCICLK_F  
*FS3/PCICLK0  
GNDPCI  
*SEL24_48#/PCICLK1  
*SELPCIE_6#/PCICLK2  
PCICLK3  
PCICLK4  
VDDPCI  
BUFFER IN  
GNDPCI  
PCICLK5  
2-REF@3'3V,14'318MHz'  
Features:  
•
•
•
Up to 137MHz frequency support  
97MHz to support high-end AMD processor'  
PCICLK6/PCICLK_E  
VDDCOR  
SDRAM5  
VDDSDR  
SDRAM6  
SDRAM7  
VDD48  
PCI_STOP#  
*PD#  
Support power management: CLK, PCI, stop and Power  
down Mode from I2C programming'  
GND48  
SDATA  
SCLK  
48MHz/FS0*  
24_48MHz/FS1*  
•
Spread spectrum for EMI control  
(±'25% & 0 to -0'5% down spread)'  
•
•
Uses external 14'318MHz crystal  
FS pins for frequency select  
48-Pin SSOP and TSSOP  
* Internal Pull-up Resistor of 120K to VDD  
KeySpecifications:  
•
•
•
•
•
•
•
CPU Output Jitter @ 2'5V: <300ps  
CPU Output Jitter @ 3'3V: <250ps  
PCI Output Jitter @ 3'3V: <250ps  
CPUOutputSkew@2'5V:<175ps  
CPUOutputSkew@3'3V:<175ps  
PCIOutputSkew@3'3V:<500ps  
PCI Early to PCI Skew @ 3'3V: typ = 3ns  
Functionality  
CPU  
(MHz)  
66.67  
100.00  
100.30  
133.33  
105.00  
133.37  
137.00  
75.00  
100.00  
95.00  
97.00  
133.33  
90.00  
96.22  
PCI  
(MHz)  
33.33  
33.33  
33.43  
33.33  
35.00  
33.34  
34.25  
37.50  
33.33  
31.67  
32.33  
33.33  
30.00  
32.07  
33.41  
30.50  
FS3  
FS2  
FS1  
FS0  
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Block Diagram  
PLL2  
48MHz  
24_48MHz  
REF[1:0]  
/ 2  
X1  
X2  
XTAL  
OSC  
2
BUFFER IN  
CPUCLK_F  
PLL1  
Spread  
Spectrum  
STOP  
STOP  
CPUCLK [2:0]  
3
4
FS(0:3)  
SDRAM [7:0]  
SDRAM_F  
LATCH  
POR  
8
SEL24_48#  
4
PCI  
CLK_STOP#  
CLOCK  
DIVDER  
STOP  
PCICLK [5:0]  
PCICLK_F  
PCICLK_E  
6
PCI_STOP#  
CPU2.5_3.3#  
Control  
Logic  
66.82  
91.50  
SDATA  
SCLK  
PD#  
Config.  
Reg.  
Pentium is a trademark of Intel Corporation  
I2C is a trademark of Philips Corporation  
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  
9248-143 Rev C 7/26/00  
information being relied upon by the customer is current and accurate.  
1234567...16

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