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ICS951411 Datasheet(PDF) 4 Page - Integrated Circuit Systems

Part No. ICS951411
Description  System Clock Chip for ATI RS400 P4TM-based Systems
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Maker  ICST [Integrated Circuit Systems]
Homepage  http://www.icst.com
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ICS951411 Datasheet(HTML) 4 Page - Integrated Circuit Systems

 
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4
Integrated
Circuit
Systems, Inc.
ICS951411
0891E—03/07/05
ICS951411 provides a single-chip clocking solution for the ATI RS400-based systems using the latest Intel P4 processors.
ICS951411 is driven with a 14.318MHz crystal. It generates CPU outputs up to 400MHz and also provides highly accurate
SRC clocks for PCI Express support. Two Clock Request pins are provided for Express-Card
TM support.
General Description
Block Diagram
Power Groups
MAIN PLL
PCICLK0
CONTROL
LOGIC
XTAL
OSC.
CPUCLK(2:0)
FIXED PLL
USB_48MHz
DIVIDER
DIVIDERS
REF(2:0)
SRCCLK(7:3,0)
CLKREQA#
SDATA
SCLK
CLKREQB#
X1
X2
IREF
FS(C:A)
CPU_STOP#
VTT_PWRGD#/PD
ATIGCLK(1:0)
CK410#
VDD
GND
56
55
Xtal, REF
51
49
PCICLK output
45
44
CPUCLK Outputs
14, 21, 35 15, 20, 26, 36
SRCCLK outputs
32
31
ATIGCLK outputs
39
38
Analog, CPU PLL
3
5
USB_48MHz output
Pin Number
Description


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