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XIO2001IPNP bảng dữ liệu(PDF) 33 Page - Texas Instruments

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tên linh kiện XIO2001IPNP
Giải thích chi tiết về linh kiện  PCI Express to PCI Bus Translation Bridge
PDF  141 Pages
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nhà sản xuất  TI1 [Texas Instruments]
Trang chủ  http://www.ti.com
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XIO2001IPNP bảng dữ liệu(HTML) 33 Page - Texas Instruments

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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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