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參數(shù)資料
| 型號： | C9812 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | Low EMI Clock Generator for Intel 810E Chipset Systems |
| 中文描述： | 低EMI時鐘發(fā)生器芯片組為Intel 810E規(guī)定系統(tǒng) |
| 文件頁數(shù)： | 4/18頁 |
| 文件大?。?/td> | 279K |
| 代理商： | C9812 |
Low EMI Clock Generator for Intel
810E Chipset Systems
Cypress Semiconductor Corporation
525 Los Coches St.
Milpitas, CA 95035. Tel: 408-263-6300, Fax: 408-263-6571
http://www.cypress.com
Document#: 38-07053 Rev. **
05/03/01
Page 4 of 18
APPROVED PRODUCT
C9812
Clock Synchronization and Phase Alignment
This device incorporates IOAPIC clock synchronization. With this feature, the IOAPIC clocks are derived from the CPU
clock. The IOAPIC clock lags the CPU clock by the specified 1.5 to 3.5 nSec. Figure 3 shows the relationship between
the CPU and IOAPIC clocks.
Device Clock Phase Relationships
Fig.3
0nS
10nS
20nS
30nS
40nS
66MHz
100MHz
133MHz
CPU CLOCK
SDRAM CLOCK
3V66 CLOCK
PCI CLOCK
100MHz
66MHz
33MHz
CPU CLOCK
CPU CLOCK
1.5~3.5nS
Sync
7.5nS
5nS
5nS
2.5nS
IOAPIC CLOCK
33MHz
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