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PDF ( 数据手册 , 数据表 ) MK1491-06RLF

零件编号 MK1491-06RLF
描述 AMD Geode Clock Source
制造商 Integrated Circuit Systems
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MK1491-06RLF 数据手册, 描述, 功能
MK1491-06
AMD Geode™ Clock Source
Description
The MK1491-06 is a low-cost, low-jitter,
high-performance clock synthesizer for AMD’s
Geode-based computer and portable appliance
applications. Using patented analog Phased-Locked
Loop (PLL) techniques, the device accepts a 14.318
MHz crystal input to produce multiple output clocks. It
provides selectable PCI local bus and AC97 audio
clocks, 24 MHz and 48 MHz clocks for Super I/O and
USB, as well as multiple Reference outputs.
The device has multiple power-down modes to reduce
power consumption.
Block Diagram
Features
Packaged in 28-pin SOIC or in 28-pin SSOP
Available in Pb (lead) free
Provides all critical timing for the AMD Geode
companion chip
Four PCI clocks
Selectable PCIF on up to 2 outputs
Early PCI clock selectability
Up to 4 Reference clocks
48 MHz USB and 24MHz SIO support
AC97 audio clock
Multiple power down modes
Low EMI Enable pin reduces EMI radiation on PCI
clocks (patented)
Operating voltage of 3.3 V ±5%
VDD
6
GND
5
PCI Frequency Select
Low EMI Enable
PCIF Function Enable
Early PCI Enable
SLOW#
PCISTP#
PWRDWN#
2
PCI
Clocks
3 PCI
EPCI/PCI
Audio Select
14.3M/24M Select
14.31818 MHz
crystal
XI
XO
Crystal
Oscillator
Audio
Clock
Fixed
Clocks
MUX
16.394 MHz or
24.576 MHz or
49.152 MHz
48 MHz
14.318 MHz or
24 MHz
3 14.318 MHz
MDS 1491-06 J
1
Revision 110204
Integrated Circuit Systems, Inc. 525 Race Street, San Jose, CA 95126 tel (408) 297-1201 www.icst.com







MK1491-06RLF pdf, 数据表
Marking Diagram
28
15
ICS
######
YYWW
MK1491-06R
MK1491-06
AMD Geode™ Clock Source
1 14
Notes:
1. ###### is the lot code.
2. YYWW is the last two digits of the year, and the week number that the part was assembled.
MDS 1491-06 J
8
Revision 110204
Integrated Circuit Systems, Inc. 525 Race Street, San Jose, CA 95126 tel (408) 297-1201 www.icst.com














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