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ICS950405 Datasheet

  • ICS950405

  • AMD - K8 System Clock Chip

  • 16頁

  • ICS

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Integrated
Circuit
Systems, Inc.
ICS950405
AMD - K8鈩?System Clock Chip
Recommended Application:
AMD K8 System Clock with AMD, VIA or ALI Chipset
Output Features:
鈥?/div>
2 - Differential pair push-pull CPU clocks @
3.3V
鈥?/div>
9 - PCICLK (Including 1 free running) @ 3.3V
鈥?/div>
3 - Selectable PCICLK/HTTCLK @ 3.3V
鈥?/div>
1 - HTTCLK @ 3.3V
鈥?/div>
1 - 48MHz @ 3.3V fixed.
鈥?/div>
1 - 24/48MHz @ 3.3V
鈥?/div>
3 - REF @ 3.3V, 14.318MHz.
Features:
鈥?/div>
Programmable output frequency.
鈥?/div>
Programmable output divider ratios.
鈥?/div>
Programmable output rise/fall time.
鈥?/div>
Programmable output skew.
鈥?/div>
Programmable spread percentage for EMI control.
鈥?/div>
Watchdog timer technology and RESET# output to
reset system
if system malfunctions.
鈥?/div>
Programmable watch dog safe frequency.
鈥?/div>
鈥?/div>
鈥?/div>
Support I
2
C Index read/write and block read/write
operations.
Uses external 14.318MHz crystal.
Supports Hyper Transport Technology (HTTCLK).
Functionality
FS3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
FS2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
FS1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
FS0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
CPU
MHz
100.90
133.90
168.00
202.00
100.20
133.50
166.70
200.40
150.00
180.00
210.00
240.00
270.00
233.33
266.67
300.00
HTT
MHz
67.27
66.95
67.20
67.33
66.80
66.75
66.68
66.80
60.00
60.00
70.00
60.00
67.50
66.67
66.67
75.00
PCI
MHz
33.63
33.48
33.60
33.67
33.40
33.38
33.34
33.40
30.00
30.00
35.00
30.00
33.75
33.33
33.33
37.50
Pin Configuration
*FS0/REF0
VDDHTT
X1
X2
GND
*ModeA/HTTCLK0
*ModeB/PCICLK8/HTTCLK1
PCICLK9/HTTCLK2
VDDPCI
GND
PCICLK11/HTTCLK3
PCICLK10
PCICLK0
PCICLK1
GND
VDDPCI
PCICLK2
PCICLK3
VDDPCI
GND
2X
PCICLK4
2X
PCICLK5
2X
PCICLK6
2X
PCICLK7
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
REF1/FS1*
GND
VDDREF
REF2/FS2*
Reset#
VDDA
GND
CPUCLK8T0
CPUCLK8C0
GND
VDDCPU
CPUCLK8T1
CPUCLK8C1
VDDCPU
GND
GND
PD#*
48MHz/FS3**
GND
AVDD48
24_48MHz/Sel24_48#*
GND
SDATA
SCLK
48-SSOP
* Internal Pull-Up Resistor
2X
This Output has 2X Default Drive and can be programmaed lower via IIC
0802F鈥?4/22/05
ICS950405

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