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ICS951413 Datasheet(PDF) 4 Page - Integrated Circuit Systems

Part No. ICS951413
Description  Programmable System Clock Chip for ATI RS400 P4-based Systems
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Maker  ICST [Integrated Circuit Systems]
Homepage  http://www.icst.com
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ICS951413 Datasheet(HTML) 4 Page - Integrated Circuit Systems

 
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Integrated
Circuit
Systems, Inc.
ICS951413
0929C—03/07/05
ICS951413 provides a single-chip clocking solution for the ATI RS400-based systems using the latest Intel P4 processors.
ICS951413 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. Two of the SRC
outputs (ATIGCLK(1:0)) are frequency programmable.
General Description
Block Diagram
Power Groups
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
CPU PLL
PCICLK0
CONTROL
LOGIC
XTAL
OSC.
CPUCLK(2:0)
FIXED PLL
USB_48MHz
SRC
DIV2
/8/7/6/5
REF(2:0)
ATIGCLK(1:0)
X1
X2
PCI33
DIV
SRC PLL
CPU
DIV
CLKREQA#
SDATA
SCLK
FS_(C:A)
CLKREQB#
SRC
DIV1
SRCCLK(7:3,0)
CPU_STOP#
VTT_PWRGD#/PD
IREF
CK410#


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