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參數(shù)資料
| 型號： | ICS9159M-06LF |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 時鐘產生/分配 |
| 英文描述： | 66.6 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO28 |
| 封裝： | 0.300 INCH, SOIC-28 |
| 文件頁數(shù)： | 1/7頁 |
| 文件大?。?/td> | 358K |
| 代理商： | ICS9159M-06LF |
Integrated
Circuit
Systems, Inc.
General Description
Features
ICS9159-06
Frequency Generator and Buffer for Pentium Systems
ICS9159-06RevC091897P
Block Diagram
The ICS9159-06 is a low cost frequency generator designed
specificallyforPentiumsystems.Theintegratedbufferminimizes
skew and provides the early CPU clock required by some
chipsetssuchastheOPTiVIPER.A14.318MHzXTALoscillator
provides the reference clock to generate standard Pentium
frequencies.TheCPUclock makesgradual frequency transitions
without violating the PLL timing of internal microprocessor
clock multipliers.
Asynchronous 33.3 MHz PCI bus operation is supported,
in-dependent of the CPU operating frequency. Green PC
systems are supported through power-down, doze, and
glitch-free stop clock modes.
Four CPU clocks operate up to 66 MHz at 3.3V with
glitch-free start and stop plus smooth transitions
3-6ns early CPU clock supports OPTi VIPER systems
Selection of 8 frequencies, tristate, or power-down
Six BUS clocks support asynchronous PCI bus
operation
±250ps skew between synchronous outputs
Integrated buffer outputs drive up to 30pF loads
3.1V -5.5V supply range
28-pin 300-mil SOIC package
COMPAQ is a trademark of Compaq Computers.
Pentium is a trademark of Intel Corporation.
Applications
Ideal for green Pentium and 486 PCI systems
Functionality
3.1 to 5.5V, 0-70° Crystal=14.318 MHz input
STP0# STP1# DOZE#
FS(0:1)
CPU(0:1)
(MHz)
CPU2,
ECPU
BUS(0:5)
(MHz)
REF(0:3)
(MHz)
1
X
1
00
66.6*
33.3
14.318
1
X
1
01
60*
33.3
14.318
1
X
1
10
50
33.3
14.318
1
X
1
11
40
33.3
14.318
1
X
0
00
33.3
16.7
14.318
1
X
0
01
30
16.7
14.318
1
X
0
10
25
16.7
14.318
1
X
0
11
22.5
16.7
14.318
0
1
- -
Stop
Run
14.318
0
1
X X
Stop
14.318
0
0*
X X
Low
14.318
0
1
0
X X
Tristate Tristate Tristate 14.318
* 3.3 volt operation only. ** 000 mode powers-down the
PLL sections and forces the outputs low. To ensure glitch-
free start and stop of the CPU and BUS clocks enter 000
from 001 and exit 000 through 001.
PRODUCT PREVIEW documents contain information on new
products in the sampling or preproduction phase of development.
Characteristic data and other specifications are subject to change
without notice.
Preliminary Product Preview
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ICS9159M-07 | 制造商:ICS 制造商全稱:ICS 功能描述:Frequency Generator for NexGen⑩ Nx586 Systems |
| ICS9159M-13 | 制造商:ICS 制造商全稱:ICS 功能描述:Frequency Generator and Integrated Buffer for PENTIUM™ |
| ICS9159M-14 | 制造商:ICS 功能描述: |
| ICS9159M-20 | 制造商:ICS 制造商全稱:ICS 功能描述:Frequency Generator for SIS551X and SIS6205 Chip Set Systems |
| ICS9159N-05 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CPU System Clock Generator |
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