Шина PCI

Шина PCI

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Connected to the southBridge

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Originally 33 MHz  32-bit wide  132 MB/second peak transfer rate

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Originally 33 MHz, 32-bit wide, 132 MB/second peak transfer rate

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More recently 66 MHz, 64-bit, 512 MB/second peak

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Upstream bandwidth remain slow for device (256MB/s peak)

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Shared bus with arbitration

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Shared bus with arbitration

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Winner of arbitration becomes bus master and can connect to CPU or 

DRAM through the southbridge and northbridge