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ICS950401 Datasheet

  • ICS950401

  • AMD - K8TM System Clock Chip

  • 109.43KB

  • 14頁

  • ICS

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Integrated
Circuit
Systems, Inc.
ICS950401
AMD - K8鈩?System Clock Chip
Recommended Application:
AMD K8 Systems
Pin Configuration
*FS0/REF0 1
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
REF1/FS1*
GND
VDDREF
REF2/FS2*
SPREAD*
VDDA
GNDA
CPUCLKT0
CPUCLKC0
GND
VDDCPU
CPUCLKT1
CPUCLKC1
VDD
GND
GNDA
VDDA
48MHz
GND
VDD
24_48MHz/Sel24_48#*
GND
SDATA
SCLK
Output Features:
VDDREF 2
鈥?/div>
2 - Differential pair push-pull CPU clocks @ 3.3V
X1 3
鈥?/div>
7 - PCI (Including 1 free running) @3.3V
X2 4
鈥?/div>
3 - Selectable HT/PCI 66/33MHz @3.3V
GND 5
鈥?/div>
1 - 48MHz, @3.3V fixed.
*PCI33/HT66SEL# 6
鈥?/div>
1 - 24/48MHz @ 3.3V
PCICLK33/HT66_0 7
鈥?/div>
3 - REF @3.3V, 14.318MHz.
PCICLK33/HT66_1 8
Features:
VDDPCI 9
鈥?/div>
Up to 220MHz frequency support
GND 10
鈥?/div>
Support power management: PCI stop and stop
PCICLK33/HT66_2 11
2
clocks controlled by I C.
NC 12
鈥?/div>
Spread spectrum for EMI reduction
PCICLK0 13
鈥?/div>
Uses external 14.318MHz crystal
PCICLK1 14
2
鈥?/div>
I C programmability features
GND 15
VDDPCI 16
鈥?/div>
Supports Hypes transport technology (HT66 output).
PCICLK2
PCICLK3
VDDPCI
GND
PCICLK4
PCICLK5
PCICLK_F
*PCI_STOP#
17
18
19
20
21
22
23
24
48-SSOP/ TSSOP
* Internal Pull-Up Resistor
** Internal Pull-Down Resistor
Block Diagram
PLL2
/2
X1
X2
XTAL
OSC
PLL1
Spread
Spectrum
48MHz
24_48MHz
Functionality
FS2 FS1 FS0
0
0
0
0
0
1
1
1
1
0
0
0
1
1
0
0
1
1
0
1
1
0
1
0
1
0
1
PCI33_HT66
SEL#
X
0
1
X
X
X
X
X
X
CPU
Hi-Z
X
X
180.00
220.00
100.00
133.33
166.66
200.00
PCI33
Hi-Z
X/6
X/6
30.00
36.56
33.33
33.33
33.33
33.33
PCI33_HT66
Hi-Z
X/3
X/6
60.00
73.12
33.33/66.66
33.33/66.66
33.33/66.66
33.33/66.66
COMMENTS
Tri-State Mode
Bypass Mode
Bypass Mode
10% under-clk
10% over-clk
Athlon Compatible
Athlon Compatible
Reserved
Hammer Operation
REF (2:0)
CPU
DIVDER
Stop
CPUCLKC (1:0)
CPUCLKT (1:0)
SDATA
SCLK
FS (2:0)
PCI33/HT66SEL#
PCI_STOP#
SPREAD
24_48SEL#
Control
Logic
Config.
Reg.
PCI
DIVDER
Stop
PCICLK (5:0)
PCICLK_F
X2
PCICLK33/HT66(2:0)
0499C鈥?1/01/04
ICS950401

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