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ICS9248-189 PDF预览

ICS9248-189

更新时间: 2024-09-24 22:55:27
品牌 Logo 应用领域
矽成 - ICSI 时钟发生器移动系统
页数 文件大小 规格书
15页 237K
描述
AMD - K7⑩ Clock Generator for Mobile System

ICS9248-189 数据手册

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ICS9248-189  
Integrated  
Circuit  
Systems, Inc.  
Advance Information  
AMD - K7Clock Generator for Mobile System  
RecommendedApplication:  
VIA K7/KN/KX-133 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  
X1  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
REF01  
REF  
REF2/FS3*  
GND  
GND  
VDD  
1
1 - Differential pair open drain CPU clocks  
1 - CPU clock @ 3.3V  
7 - SDRAM @ 3.3V  
8 - PCI @ 3.3V,  
1 - 48MHz, @ 3.3V fixed  
1 - 24/48MHz @ 3.3V  
X2  
*FS2/PCICLK_F  
*FS1/PCICLK0  
VDDPCI  
GND  
PCICLK1  
PCICLK2  
PCICLK3  
PCICLK4  
PCICLK5  
GND  
VDDPCI  
CPUCLK_CS  
CPUCLKT02  
CPUCLKC02  
CPU_STOP#*  
CLK_STOP#*/PD#  
SDRAM0  
SDRAM1  
VDDSDR  
GND  
SDRAM2  
SDRAM3  
GND  
VDDSDR  
SDRAM4  
SDRAM5  
SDRAM_F  
SCLK  
3 - REF @ 3.3V, 14.318MHz.  
Features:  
Up to 166MHz frequency support  
PCICLK6  
Support power management via hardware select CPU  
stop, CLOCK stop, PCI stop, and SDRAM stop  
*SDRAM_STOP#  
*PCI_STOP#  
BUFFER_IN  
AVDD  
Support power management via I2C programing  
Spread spectrum for EMI control  
GND  
GND  
(
ꢀ.2ꢁ5 to ꢀ.ꢀ65 center, or ꢀ to -ꢀ.ꢁ5 or -1.ꢀ5 down  
spread)  
*FS0/48MHZ  
*SEL24_48#/24_48MHz  
VDD48  
Uses external 14.318MHz crystal  
SDATA  
Key Specifications:  
CPU - CPU Skew: <17ꢁps  
CPU - SDRAM Skew: 12ꢁps  
CPU - PCI Skew: 1ꢀꢀps  
PCI - PCI Skew: <ꢁꢀꢀps  
48-Pin 300mil SSOP & 240milTSSOP  
*
Internal Pull-up Resistor of 120K to VDD  
These outputs have double strength to drive 2 loads.  
These outputs can be set to 1X or 1.5X strength  
through I2C  
1
2
Functionality  
Block Diagram  
FS2  
0
FS1  
0
FS0  
0
CPU  
PCI  
33.33  
33.33  
Spread Percentage  
+/- 0.35% Center Spread  
+/- 0.35% Center Spread  
PLL2  
48MHz  
100.00  
133.33  
100.00  
133.33  
100.00  
133.33  
100.00  
133.33  
24_48MHz  
0
0
1
/ 2  
0
1
0
33.33 0 to - 0.5% Down Spread  
33.33 0 to - 0.5% Down Spread  
REF (2:0)  
X1  
X2  
XTAL  
OSC  
3
0
1
1
1
0
0
33.33  
33.33  
33.33  
33.33  
+/- 0.6% Center Spread  
+/- 0.6% Center Spread  
No Spread  
PLL1  
Spread  
Spectrum  
CPU  
DIVDER  
1
0
1
Stop  
CPUCLK_CS  
1
1
0
CPUCLKT0  
CPUCLKC0  
1
1
1
No Spread  
Note: For a complete functionality table please see table in  
page 3.  
SEL24_48#  
SDATA  
PCI  
DIVDER  
Stop  
Stop  
PCICLK (6:0)  
PCICLK_F  
Control  
Logic  
7
6
SCLK  
FS (3:0)  
Power Groups  
PD#  
SDRAM  
DIVIDER  
SDRAM (5:0)  
SDRAM_F  
CPU_STOP#  
CLK_STOP#  
PCI_STOP#  
SDRAM_STOP#  
BUFFER_IN  
VDD48 = 48MHz, Fixed PLL  
VDDA = VDD for Core PLL  
VDDREF = REF, Xtal  
Config.  
Reg.  
ADVANCE INFORMATION documents contain information on products  
in the formative or design phase development. Characteristic data and  
other specifications are design goals. ICS reserves the right to change or  
discontinue these products without notice.  
9248-189 Rev - 08/10/01  
Third party brands and names are the property of their respective owners.  

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