82434LX Просмотр технического описания (PDF) - Intel

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82434LX

PCI, cache and memory controller (PCMC)

Intel 

82434LX 82434NX

Figure 1 Block Diagram of a 82430LX 82430NX PCIset ISA System

290479 – 2

PCI Bus

The PCI Bus is designed to address the growing in-

dustry needs for a standardized local bus that is not

directly dependent on the speed and the size of the

processor bus New generations of personal com-

puter system software such as WindowsTM and

Win-NTTM with sophisticated graphical interfaces

multi-tasking and multi-threading bring new require-

ments that traditional PC I O architectures cannot

satisfy In addition to the higher bandwidth reliability

and robustness of the I O subsystem are becoming

increasingly important PCI addresses these needs

and provides a future upgrade path PCI features in-

clude

 Processor independent

 Multiplexed burst mode operation

 Synchronous at frequencies up to 33 MHz

 120 MByte sec usable throughput

(132 MByte sec peak) for a 32-bit data path

11

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