- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄67705 > ICS9148YF-82LF 100 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48 PDF資料下載
參數(shù)資料
| 型號(hào)： | ICS9148YF-82LF |
| 元件分類(lèi)： | 時(shí)鐘產(chǎn)生/分配 |
| 英文描述： | 100 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48 |
| 封裝： | 0.300 INCH, SSOP-48 |
| 文件頁(yè)數(shù)： | 1/16頁(yè) |
| 文件大?。?/td> | 829K |
| 代理商： | ICS9148YF-82LF |
當(dāng)前第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)
Integrated
Circuit
Systems, Inc.
General Description
Features
ICS9148-82
Block Diagram
Pentium is a trademark of Intel Corporation
I
2C is a trademark of Philips Corporation
Frequency Generator & Integrated Buffers for PENTIUM/ProTM
9148-82 Rev A 3/25/99
Pin Configuration
48-Pin SSOP
Power Groups
VDD1=REF(0:1),X1,X2
VDD2=PCICLK_F,PCICLK(0:5)
VDD3 = SDRAM (0:12), supply for PLL core
VDD4=AGP(1:2)
VDD5=FixedPLL,48MHz,AGP0
VDDL= CPUCLK(0:2)
* Internal Pull-up Resistor of
240K to 3.3V on indicated inputs
The ICS9148-82 generates all clocks required for high speed
RISC or CISC microprocessor systems such as Intel PentiumPro
or Cyrix. Eight different reference frequency multiplying factors
are externally selectable with smooth frequency transitions.
Spread spectrum may be enabled through I2C programming.
Spread spectrum typically reduces system EMI by 8dB to
10dB. This simplifies EMI qualification without resorting to
board design iterations or costly shielding. The ICS9148-82
employs a proprietary closed loop design, which tightly
controls the percentage of spreading over process and
temperature variations.
Serial programming I2C interface allows changing functions,
stop clock programming and frequency selection. The
SDRAM12 output may be used as a feed back into an off chip
PLL.
Generates the following system clocks:
-3CPU(2.5V/3.3V)upto100MHz.
-6PCI(3.3V)@ 33.3MHz
-3AGP(3.3V)@2x PCI
- 13 SDRAMs(3.3V) up to 100MHz
-1REF(3.3V)@14.318MHz
Skew characteristics:
- CPU CPU<250ps
- CPU(early) PCI : 1-4ns, Center 2.6ns
-AGP- PCI: 500ps
Supports Spread Spectrum modulation & I2C
programming for Power Management, Frequency Select
Efficient Power management scheme through PCI and
CPUSTOPCLOCKS.
Uses external 14.318MHz crystal
48pin300milSSOP.
ICS reserves the right to make changes in the device data identified in
this publication without further notice. ICS advises its customers to
obtain the latest version of all device data to verify that any
information being relied upon by the customer is current and accurate.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ICS91718YGLF-T | PLL BASED CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO8 |
| ICS91730YMLF-T | PLL BASED CLOCK DRIVER, 1 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO8 |
| ICS9179YG-03LF-T | 9179 SERIES, LOW SKEW CLOCK DRIVER, 10 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO28 |
| ICS9179YF-03-T | 9179 SERIES, LOW SKEW CLOCK DRIVER, 10 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO28 |
| ICS9179YG-03-T | 9179 SERIES, LOW SKEW CLOCK DRIVER, 10 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO28 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICS9150-01 | 制造商:IDT 制造商全稱(chēng):Integrated Device Technology 功能描述:Pentium Pro? and SDRAM Frequency Generator |
| ICS9150-02 | 制造商:ICS 制造商全稱(chēng):ICS 功能描述:Pentium Pro™ and SDRAM Frequency Generator |
| ICS9150-04 | 制造商:ICS 制造商全稱(chēng):ICS 功能描述:Pentium Pro⑩ and SDRAM Frequency Generator |
| ICS9150-08 | 制造商:ICS 制造商全稱(chēng):ICS 功能描述:Frequency Generator & Integrated Buffers for Pentium/Pro⑩ |
| ICS9150F-01 | 制造商:ICS 功能描述: |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。