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參數(shù)資料
| 型號： | PIC7100 |
| 英文描述： | Peripheral IC |
| 中文描述： | 外圍芯片 |
| 文件頁數(shù)： | 4/4頁 |
| 文件大小： | 211K |
| 代理商： | PIC7100 |
PI7C7100
3 Port PCI-to-PCI Bridge
Datasheet Brief
4
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Pericom Semiconductor Corporation
2380 Bering Drive San Jose, CA 95131 1-800-435-2336 Fax (408) 435-1100 http://www.pericom.com
Applications
The PI7C7100 extends a systems PCI load capability limit beyond that of a single PCI bus. The dual secondary ports on this device
allows system designers to add more PCI devices, or more PCI option card slots, than a single PCI bus can support.
Implementing the special concurrent feature in the PI7C7100 enables maximum data through-put between the primary and the second-
ary buses with minimal system loading. Figure 1, shows the PI7C7100 system block diagram vs the traditional PCI bridge application
to illustrate the system performance enhancement resulting from implementing a PI7C7100.
Line
Interface
Card
Line
Interface
Card
Line
Interface
Card
NB
System
Memory
CPU
Line
Interface
Card
PERICOM
P2P
Single PCI Load
for Two Secondary
Bus 33 MHz, 32-Bit
Minimal Latency
Between Busses
Concurrent Mode.
Minimal Traffic
Primary PCI Bus,
33 MHz, 32-Bit
Line
Interface
Card
Line
Interface
Card
Line
Interface
Card
NB
System
Memory
CPU
Line
Interface
Card
P2P
2
Two PCI Loads for
Two Secondary Bus
Extra Latency
Between Busses
Traffic on Primary PCI Bus
P2P
1
Figure 1. Pericom's Three Port PCI vs. Traditional Two Port PCI in a System Architecture
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