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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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XIO2001IPNP Arkusz danych(PDF) 33 Page - Texas Instruments |
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XIO2001IPNP Arkusz danych(HTML) 33 Page - Texas Instruments |
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33 / 141 page  33 XIO2001 www.ti.com SCPS212I – MAY 2009 – REVISED JANUARY 2016 Product Folder Links: XIO2001 Submit Documentation Feedback Copyright © 2009–2016, Texas Instruments Incorporated 8.3.5 PCI Interrupt Conversion to PCI Express Messages The bridge converts interrupts from the PCI bus sideband interrupt signals to PCI Express interrupt messages. Table 7, Figure 12, and Figure 13 illustrate the format for both the assert and deassert INTx messages. Table 7. Interrupt Mapping In The Code Field INTERRUPT CODE FIELD INTA 00 INTB 01 INTC 10 INTD 11 Figure 12. PCI Express ASSERT_INTX Message Figure 13. PCI Express DEASSERT_INTX Message 8.3.6 PME Conversion to PCI Express Messages When the PCI bus PME input transitions low, the bridge generates and sends a PCI Express PME message upstream. The requester ID portion of the PME message uses the stored value in the secondary bus number register as the bus number, 0 as the device number, and 0 as the function number. The Tag field for each PME message is 00h. A PME message is sent periodically until the PME signal transitions high. Figure 14 illustrates the format for a PCI Express PME message. Figure 14. PCI Express PME Message |
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