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9248F-153-T PDF预览

9248F-153-T

更新时间： 2024-11-30 10:48:31
品牌 Logo 应用领域
艾迪悌 - IDT /
页数 文件大小 规格书
14页 293K
描述
Clock Generator

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中文翻译

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9248F-153-T 数据手册

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Integrated  
Circuit  
Systems, Inc.  
ICS9248-153  
AMD-K7TM System Clock Chip  
Recommended Application:  
AMD-K7 (AMD 750, Irongate Chipset)  
Output Features:  
Pin Configuration  
**FS0/REF0  
**FS1/REF1  
GNDREF  
X1  
1
2
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  
GNDSD  
SDRAM_OUT  
VDDSD  
•
3 differential pair open drain CPU clocks (1.5V external  
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
pull-up; up to 150MHz achieviable through I2C)  
X2  
RESERVED  
CPUCLKC2  
CPUCLKT2  
GNDCPU  
CPUCLKC1  
CPUCLKT1  
GND  
CPUCLKC0  
CPUCLKT0  
RESERVED  
VDD  
•
•
•
•
•
2 - AGPCLK @ 3.3V  
8 - PCI @3.3V, including 1 free running  
1 - 48MHz @ 3.3V  
1 - 24/48MHz @ 3.3V  
2- REF @3.3V, 14.318MHz.  
GNDPCI  
PCICLK_F  
PCICLK0  
VDDPCI  
PCICLK1  
PCICLK2  
GNDPCI  
PCICLK3  
PCICLK4  
VDDPCI  
PCICLK5  
PCICLK6  
VDDAGP  
AGP0  
AGP1  
GNDAGP  
VDD48  
Features:  
•
•
Up to 150MHz frequency support  
GND  
PCI_STOP#  
CPU_STOP#  
PD#  
SPREAD#  
FS2*  
SDATA  
SCLK  
GND48  
Support power management: CPU, PCI, stop and Power  
down Mode from I2C programming.  
•
•
•
Spread spectrum for EMI control +/-0.25% center spread  
Uses external 14.318MHz crystal  
FS pins for frequency select  
48MHz  
SEL24_48#/24-48MHz  
Key Specifications:  
•
•
•
•
•
CPU – CPU: <200ps  
AGP-AGP: <250ps  
PCI – PCI: <500ps  
CPU - SDRAM_OUT: |250ps|  
CPU-AGP: |250ps|  
48-Pin 300mil SSOP  
* Internal 120K pullup resistor on indicated inputs  
** Internal 240K pullup resistor on indicated inputs  
Block Diagram  
Functionality  
X1  
REF(1:0)  
OSC  
X2  
CPU,  
SDRAM  
FS2  
FS1  
FS0  
PCI  
AGP  
CPU_STOP#  
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
133.33  
95  
100.99  
115  
100.7  
103  
105  
33.33  
31.67  
33.66  
38.33  
33.57  
34.33  
35.00  
36.67  
66.67  
63.33  
67.33  
76.67  
67.13  
68.67  
70.00  
73.33  
FS (2:0)  
PLL  
SPREAD#  
CPUCLKT(2:0)  
CPUCLKC(2:0)  
SDRAM_OUT  
CPU  
STOP  
/ 2  
/ 3  
PD#  
X 2  
AGP (1:0)  
PCI  
STOP  
110  
PCICLK (6:0)  
PCI_STOP#  
PCICLK_F  
48MHz  
Power Groups  
PLL2  
VDD48, GND48 = 48MHz, PLL2  
VDDREF, GNDREF= REF, X1, X2  
VDD, GND = PLL Core  
24_48MHz  
/ 2  
SEL24_48#  
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  
9248-153 Rev B 5/10/01  
Third party brands and names are the property of their respective owners.  
information being relied upon by the customer is current and accurate.  
1234567...14

中文翻译

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