- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄379723 > C9851 (Cypress Semiconductor Corp.) Clock Generator for Pentium III Server and Workstation Applications PDF資料下載
參數(shù)資料
| 型號(hào)： | C9851 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | Clock Generator for Pentium III Server and Workstation Applications |
| 中文描述： | 時(shí)鐘奔騰III服務(wù)器和工作站發(fā)電機(jī)應(yīng)用 |
| 文件頁數(shù)： | 6/14頁 |
| 文件大小： | 122K |
| 代理商： | C9851 |
Clock Generator for Pentium
III Server and Workstation Applications
Cypress Semiconductor Corporation
525 Los Coches St.
Milpitas, CA 95035. Tel: 408-263-6300, Fax: 408-263-6571
http://www.cypress.com
Document#: 38-07068 Rev. **
05/04/2001
Page 6 of 14
PRELIMINARY
C9851
Lumped Test Load Configurations (Cont.)
Fig. 1B
Spread Spectrum Clock Generation (SSCG)
Spread Spectrum is a modulation technique applied here for maximum efficiency in minimizing Electro-Magnetic
Interference radiation generated from repetitive digital signals mainly clocks. A clock accumulates EM energy at the
center frequency it is generating. Spread Spectrum distributes this energy over a small frequency bandwidth therefore
spreading the same amount of energy over a spectrum. This technique is achieved by modulating the clock down from
(Fig.2) its resting frequency by a certain percentage (which also determines the energy distribution bandwidth). The
default of the device at power up keeps the Spread Spectrum disabled, therefore, in order to enable this function pin23,
Spread#, must be connect to ground (a low state.). See table 3 for Spread bandwidth description.
In Down Spread mode the center frequency is shifted down from its rested (non-spread) value by -0.25%. (ex.:
assuming the center frequency is 100MHz in non-spread mode; when down spread is enabled, the center frequency
shifts to 99.75MHz.).
In Center Spread mode, the Center frequency remains the same as in the non-spread mode.
Probe
Output under Test
Load Cap
2.4V
0.4V
3.3V
0V
Tr
Tf
1.5V
3.3V signals
tDC
-
-
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| C9851BT | Clock Generator for Pentium III Server and Workstation Applications |
| C9851BY | LED GREEN HIGHBRIGHTNESS |
| CA0124E | Quad, 1MHz, Operational Amplifiers for Commercial, Industrial, and Military Applications |
| CA0124M | Quad, 1MHz, Operational Amplifiers for Commercial, Industrial, and Military Applications |
| CA0124M96 | Quad, 1MHz, Operational Amplifiers for Commercial, Industrial, and Military Applications |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| C9851BT | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Clock Generator for Pentium III Server and Workstation Applications |
| C9851BY | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Clock Generator for Pentium III Server and Workstation Applications |
| C98520-000 | 制造商:TE Connectivity 功能描述:VARISTOR 240V 14MM RADIAL T/R 制造商:TE Connectivity 功能描述:VARISTOR 240V 6KA DISC 14MM |
| C9870G | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:High Performance Pentium? 4 Clock Synthesizer |
| C9870GT | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:High Performance Pentium㈢ 4 Clock Synthesizer |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。