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ICS9248-151 PDF预览

ICS9248-151

更新时间: 2024-09-28 22:55:27
品牌 Logo 应用领域
矽成 - ICSI /
页数 文件大小 规格书
14页 155K
描述
Frequency Generator & Integrated Buffers for Celeron & PII/III⑩

ICS9248-151 数据手册

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Integrated  
Circuit  
Systems, Inc.  
ICS9248-151  
Frequency Generator & Integrated Buffers for Celeron & PII/III™  
Recommended Application:  
VIA Apollo Pro 266 style chipset.  
Pin Configuration  
Output Features:  
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  
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  
REF0  
REF1/FS4*  
VDDLAPIC  
IOAPIC0  
IOAPIC1  
GND  
IOAPIC2  
VDDLCPU  
GND  
CPUCLK0  
CPUCLK1  
VDDLCPU  
GND  
CPUCLK2/F  
CPU_STOP#*  
PCI_STOP#*  
PD*  
AVDD  
GND  
SDATA  
SCLK  
AGPCLK2  
AGPCLK1  
GND  
3 - CPUs @ 2.5V, up to 200MHz.  
3 - IOAPIC @ 2.5V, ½ PCI frequency  
9 - PCI @ 3.3V,  
1 - 48MHz, @ 3.3V fixed.  
1 - 24/48MHz @ 3.3V  
X1  
X2  
AVDD48  
*FS3/48MHz  
*FS2/24_48MHz  
GND  
PCICLK_F  
PCICLK0  
PCICLK1  
GND  
PCICLK2  
PCICLK3  
VDDPCI  
PCICLK4  
PCICLK5  
PCICLK6  
GND  
PCICLK7  
*FS1  
*FS0  
AGPCLK0  
VDDAGP  
2 - REF @ 3.3V, 14.318MHz.  
3 - AGP @ 3.3V  
Features:  
Up to 200MHz frequency support  
Support power management: PCI, CPU stop  
and Power Down.  
Spread spectrum for EMI control (0 to -0.5%, 0.25%ꢀ.  
Uses external 14.318MHz crystal  
Skew Specifications:  
CPU – CPU: <175ps  
PCI – PCI: <500ps  
CPU(earlyꢀ-PCI: Min=1.0ns, Max=2.5ns  
CPU Cycle to cycle jitter: < 250ps  
48-Pin 300mil SSOP  
Internal Pull-up Resistor of 120K to VDD  
*
Block Diagram  
Functionality  
CPU  
AGP  
(MHz)  
80.00  
76.00  
72.00  
68.00  
66.40  
64.00  
75.00  
72.50  
70.00  
68.00  
65.00  
62.00  
PCICLK  
(MHz)  
40.00  
38.00  
36.00  
34.00  
33.20  
32.00  
37.50  
36.25  
35.00  
34.00  
32.50  
31.00  
FS4 FS3 FS2 FS1 FS0  
PLL2  
48MHz  
(MHz)  
200.00  
190.00  
180.00  
170.00  
166.00  
160.00  
150.00  
145.00  
140.00  
136.00  
130.00  
124.00  
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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
24_48MHz  
/ 2  
X1  
X2  
XTAL  
OSC  
REF (1:0)  
2
2
PLL1  
Spread  
Spectrum  
CPU  
DIVDER  
Stop  
CPUCLK (1:0)  
CPUCLK2/F  
Stop/F  
AGP  
DIVDER  
AGPCLK (2:0)  
IOAPIC (2:0)  
3
3
Control  
Logic  
FS (4:0)  
PD#  
IOAPIC  
DIVDER  
PCI_STOP#  
CPU_STOP#  
SDATA  
Config.  
Reg.  
66.67  
100.00  
118.00  
133.33  
66.67  
66.67  
78.67  
66.67  
33.34  
33.33  
39.33  
33.34  
PCI  
DIVDER  
Stop  
PCICLK (7:0)  
PCICLK_F  
8
SCLK  
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  
9248-151 Rev B 01/29/01  
Third party brands and names are the property of their respective owners.  
information being relied upon by the customer is current and accurate.  

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