Hot-Plug Implementation in the IDT 89HPES12N3 12-lane, 3-port PCI Express® Switch Application Note AN-509
●Introduction：
■The PCI Express architecture is designed to natively support both hot-add and hot-removal (“hot-plug”) of adapters and provides a “toolbox” of mechanisms that allow different user/operator models to be supported using a self-consistent infrastructure. PCI Express defines the registers necessary to support the integration of a Hot PlUg Controller within individual root and switch ports. Under Hot-Plug software control, the Hot-Plug controllers and the associated port interface within the root or switch port must control the card interface signals to ensure orderly power down and power up as cards are removed and replaced. The standard Hot-Plug controller signaling interface includes PWRLED#, ATNLED#, PWREN, REFCLKEN#,PERST#, PRSNT1#, PRSNT2#, PWRFLT#, AUXEN, MRL# AND BUTTON#.
■This application note describes how to implement two PCI Express hot-plug slots using the IDT PES12N3 12-lane, 3-port PCI Express switch.
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Application note & Design Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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October 13, 2006 |
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AN-509 |
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155 KB |
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