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ICS9147F-14 Datasheet(PDF) 2 Page - Integrated Circuit Systems

Part # ICS9147F-14
Description  Frequency Generator & Integrated Buffers for PENTIUM/ProTM
PDF  7 Pages
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Manufacturer  ICST [Integrated Circuit Systems]
Direct Link  http://www.icst.com
Logo ICST - Integrated Circuit Systems

ICS9147F-14 Datasheet(HTML) 2 Page - Integrated Circuit Systems

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ICS9147-14
Pin Descriptions
Functionality
3.3v±10% 0-70°c
Crystal (X1, X2 = 14.3181MHz
FS2
FS1
FS0
CPU, SDRAM(MHz)
PCICLK (MHz)
REF, IOAPIC
(MHz)
0
0
0
50.0
25.0
14.318
0
0
1
75.0
32.0
14.318
0
1
0
33.3
16.65
14.318
0
1
1
68.5
34.25
14.318
1
0
0
55.0
27.5
14.318
1
0
1
75.0
37.5
14.318
1
1
0
60.0
30.0
14.318
1
1
1
66.8
33.4
14.318
* Internal Pull-up Resistor of 120K to 3.3V on indicated inputs
PIN NUM BER
PIN NAME
TYPE
DESCRIPTION
1
VDD1
PWR
Ref (0:2), XTAL, 24MHz, 48MHz power supply
2
REF0
OUT
14.318 Mhz reference clock.
3,9,22,33,39,45
GND
PWR
Ground
4X1
IN
Crystal input has internal load cap and feedback
resistor from X2
5
X2
OUT
Crystal output nominally 14.318MHz. Has internal load cap
16,23,24,
27,48
N/C
-
Pins are not internally connected
6,14
VDD2
PWR
Supply for PCICLK_F and PCICLK (0:5)
7
PCICLK_F
OUT
Free running PCI clock
FS1*
IN
Frequency select pin. *
8
PCICLK0
OUT
PCI clock output.
FS2*
IN
Frequency select pin. *
10, 11, 12, 13
PCICLK(1:4)
OUT
PCI clock outputs
15
PCICLK5
OUT
PCI clock output.
17, 18, 20, 21,
28, 29, 31, 32,
34, 35,37,38
SDRAM (0:11)
OUT
SDRAM clock outputs.
19,30,36
VDD3
PWR
Supply for SDRAM (0:11)
25
24MHz
OUT
24MHz output clock
26
48MHz
OUT
48MHz output clock
FS0*
IN
Frequency select pin
40, 41, 43, 44
CPUCLK(0:3)
OUT
CPU clock outputs, powered by VDD1
42
VDDL1
PWR
Supply for CPU (0:3) and IOAPIC clock, can be 2.5 or 3.3V
46
REF1
OUT
14.318 Mhz reference clock.
47
IOAPIC
OUT
IOAPIC clock output. Powered by VDDL1.



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