PI7C7100 Ver la hoja de datos (PDF) - Pericom Semiconductor
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PI7C7100 Datasheet PDF : 4 Pages
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PI7C7100
3 Port PCI-to-PCI Bridge
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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.
CPU
CPU
System
Memory
NB
Concurrent Mode.
Minimal Traffic
System
NB
Memory
Traffic on Primary PCI Bus
Primary PCI Bus,
33 MHz, 32-Bit
Single PCI Load
for Two Secondary
Bus 33 MHz, 32-Bit
PERICOM
P2P
Minimal Latency
Between Busses
Line
Interface
Card
Line
Interface
Card
Two PCI Loads for
Two Secondary Bus
P2P1
Extra Latency
P2P2 Between Busses
Line
Interface
Card
Line
Interface
Card
Line
Interface
Card
Line
Interface
Card
Line
Interface
Card
Line
Interface
Card
Figure 1. Pericom's Three Port PCI vs. Traditional Two Port PCI in a System Architecture
Pericom Semiconductor Corporation
2380 Bering Drive San Jose, CA 95131 1-800-435-2336 Fax (408) 435-1100 http://www.pericom.com
4
PXXXX 06/01/00
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