參數(shù)資料
型號(hào): ICS650R-01T
元件分類(lèi): 時(shí)鐘產(chǎn)生/分配
英文描述: 80 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO20
封裝: 0.150 INCH, SSOP-20
文件頁(yè)數(shù): 1/7頁(yè)
文件大?。?/td> 147K
代理商: ICS650R-01T
ICS650-01
MDS 650-01 F
1
Revision 082505
Integrated Circuit Systems, Inc.
525 Race Street, San Jose, CA 95126 tel (408) 297-1201 www.icst.com
System Peripheral Clock Source
Description
The ICS650-01 is a low-cost, low-jitter,
high-performance clock synthesizer for system
peripheral applications. Using analog/digital
Phase-Locked Loop (PLL) techniques, the device
accepts a parallel resonant 14.31818 MHz crystal input
to produce up to eight output clocks. The device
provides clocks for PCI, SCSI, Fast Ethernet, Ethernet,
USB, and AC97. The user can select one of three USB
frequencies and also one of two AC97 audio
frequencies. The OE pin puts all outputs into a high
impedance state for board level testing. All frequencies
are generated with less than one ppm error, meeting
the demands of SCSI and Ethernet clocking.
Features
Packaged in 20-pin SSOP (QSOP)
Available in Pb (lead) free package
Operating voltage of 3.3 V or 5 V
Less than one ppm synthesis error in all clocks
Inexpensive 14.31818 MHz crystal or clock input
Provides Ethernet and Fast Ethernet clocks
Provides SCSI clocks
Provides PCI clocks
Selectable AC97 audio clock
Selectable USB clock
OE pin tri-states the outputs for testing
Selectable frequencies on three clocks
Duty cycle of 40/60
Advanced, low-power CMOS process
Industrial temperature range available
Block Diagram
Clock
Synthesis
Circuitry
USB Clock
Processor
Clocks
14.31818 MHz
Crystal or Clock
Audio Clock
20 MHz
4
OE (all outputs)
14.31818 MHz
Crystal
Oscillator
X1/ICLK
X2
PSEL1:0
ASEL
USEL
VDD
3
2
GND
2
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