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ICS9248YF-199-T PDF预览

ICS9248YF-199-T

更新时间： 2024-09-25 03:12:55
品牌 Logo 应用领域
矽成 - ICSI 晶体外围集成电路光电二极管时钟
页数 文件大小 规格书
21页 169K
描述
Frequency Generator for SIS 735/740 with AMD K7 Processor

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中文翻译

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ICS9248YF-199-T 数据手册

 浏览型号ICS9248YF-199-T的Datasheet PDF文件第2页浏览型号ICS9248YF-199-T的Datasheet PDF文件第3页浏览型号ICS9248YF-199-T的Datasheet PDF文件第4页浏览型号ICS9248YF-199-T的Datasheet PDF文件第5页浏览型号ICS9248YF-199-T的Datasheet PDF文件第6页浏览型号ICS9248YF-199-T的Datasheet PDF文件第7页 
ICS9248-199  
Integrated  
Circuit  
Systems,Inc.  
Frequency Generator for SIS 735/740 with AMD K7 Processor  
Features:  
Recommended Application:  
Main system clock for SIS 735/740 with  
AMD K7 chipset.  
•
Programmable output frequency.  
•
•
•
•
•
Programmable output divider ratios.  
Programmable output rise/fall time.  
Programmable output skew.  
Programmable spread percentage for EMI control.  
Watchdog timer technology to reset system  
if system malfunctions.  
Output Features:  
•
•
•
•
•
•
•
•
1 - CPU @ 2.5V  
1 - Differential pair open drain CPU clock  
1 - IOAPIC @ 2.5V  
1 - SDRAM @ 3.3V  
6- PCI @3.3V  
•
•
Programmable watch dog safe frequency.  
Support I2C Index read/write and block read/write  
operations.  
2 - AGP @ 3.3V  
•
Uses external 14.318MHz crystal.  
1- 48MHz, @3.3V fixed  
1- 24/48MHz, @3.3V selectable by I2C  
(Default is 24MHz)  
Skew Specifications:  
•
•
•
•
•
CPU - CPU: < 175ps  
PCI - PCI: < 500ps  
•
2- REF @3.3V, 14.318MHz  
CPU - SDRAM: < 250ps  
AGP - AGP: <175ps  
CPU - AGP, PCI: 1-4ns  
Frequency Table  
Pin Configuration  
Bit 2 Bit 7 Bit 6 Bit 5 Bit 4  
FS4 FS3 FS2 FS1 FS0  
AGP  
AGP  
VDDREF  
*FS0/REF0  
*FS1/REF1  
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  
48  
47  
46  
45  
44  
43  
42  
41  
40  
39  
38  
37  
36  
35  
34  
33  
32  
31  
30  
29  
28  
27  
26  
25  
VDDLAPIC  
IOAPIC*  
GND  
CPU SDRAM PCI  
66.66 66.66 33.33  
100.00 100.00 33.33  
166.66 166.66 33.33  
133.33 133.33 33.33  
SEL = 0 SEL = 1  
2
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
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
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
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
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
66.66  
66.66  
66.66  
66.66  
66.66  
66.66  
66.66  
66.66  
67.20  
62.00  
69.00  
60.00  
62.50  
66.66  
60.00  
60.00  
60.00  
67.27  
68.67  
68.67  
66.95  
68.67  
66.95  
66.95  
71.33  
71.33  
71.33  
73.33  
73.33  
73.33  
66.68  
66.66  
50.00  
50.00  
55.60  
50.00  
50.00  
50.00  
50.00  
50.00  
56.00  
46.50  
46.00  
50.00  
50.00  
55.30  
50.00  
48.00  
45.00  
50.45  
51.50  
51.56  
51.45  
50.21  
50.21  
50.21  
53.50  
53.50  
53.50  
55.00  
55.00  
55.00  
55.57  
50.00  
VDDL  
GND  
X1  
X2  
GND  
CPUCLKT0  
CPUCLKC0  
GND  
VDDL  
CPUCLK  
GND  
NC  
NC  
VDDSDR  
SDRAM  
GND  
66.66  
100.00 66.66  
100.00 33.33  
33.33  
2
100.00 133.33 33.33  
133.33 100.00 33.33  
112.00 112.00 33.60  
124.00 124.00 31.00  
138.00 138.00 34.50  
150.00 150.00 30.00  
100.00 166.66 31.25  
133.33 166.66 33.33  
150.00 100.00 30.00  
160.00 120.00 30.00  
FS2/PCICLK_F  
2
FS3/PCICLK0  
VDDPCI  
2
**FS4/PCICLK1  
**PCICLK2  
GND  
**PCICLK3  
**PCICLK4  
VDDAGP  
AGPCLK0  
AGPCLK1  
GND  
2
2
PCI_STOP#  
CPU_STOP#  
1
PD#  
2
SDRAM_STOP#  
2
90.00  
90.00 30.00  
AGP_STOP#  
100.90 100.90 33.63  
103.00 103.00 34.33  
133.90 133.90 33.48  
137.33 103.00 34.33  
137.33 137.33 34.33  
100.90 133.90 33.48  
133.90 100.90 33.48  
107.00 107.00 35.66  
107.00 142.66 35.66  
142.66 142.66 35.66  
110.00 110.00 36.66  
110.00 146.66 36.66  
146.66 146.66 36.66  
166.70 125.00 31.25  
200.00 200.00 33.33  
VDD48  
SDATA  
SCLK  
GND  
48MHz  
AGPSEL/ 24_48MHz  
GND  
2
1
VDD  
48-Pin 300mil SSOP  
*
These are double strength.  
** (1X/2X) have single or double strength to  
drive 2 loads.  
1. Internal pull-up, of 120K to VDD  
.
2. These inputs have a 120K pull down to GND.  
Note: Please see full table on page 4.  
0376E—12/23/02  
1234567...21

中文翻译

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