Altera Arria 10 Avalon-MM Bedienungsanleitung Seite 57

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Related Information
PCI Express Card Electromechanical Specification 2.0
Configuration via Protocol (CvP) Implementation in Altera FPGAs User Guide
Interrupts for Endpoints when Multiple MSI/MSIX Support Is Enabled
Table 5-6: Exported Interrupt Signals for Endpoints when Multiple MSI/MSIX Support is Enabled
The following table describes the IP core’s exported interrupt signals when you turn on Enable multiple MSI/
MSI-X support under the Avalon-MM System Settings banner in the parameter editor.
Signal Direction Description
MsiIntfc_o[81:0]
Output This bus provides the following MSI address, data, and enabled
signals:
MsiIntf_o[81]: Master enable
MsiIntf_o[80}: MSI enable
MsiIntf_o[79:64]: MSI data
MsiIntf_o[63:0]: MSI address
MsiControl_o[15:0]
Output Provides for system software control of MSI as defined in Section
6.8.1.3 Message Control for MSI in the PCI Local Bus Specifica‐
tion, Rev. 3.0. The following fields are defined:
MsiControl_o[15:9]: Reserved
MsiControl_o[8]: Per-vector masking capable
MsiControl_o[7]: 64-bit address capable
MsiControl_o[6:4]: Multiple Message Enable
MsiControl_o[3:1]: MSI Message Capable
MsiControl_o[0]: MSI Enable.
MsixIntfc_o[15:0]
Output Provides for system software control of MSI-X as defined in
Section 6.8.2.3 Message Control for MSI-X in the PCI Local Bus
Specification, Rev. 3.0. The following fields are defined:
MsixIntfc_o[15]: Enable
MsixIntfc_o[14]: Mask
MsixIntfc_o[13:11]: Reserved
MsixIntfc_o[10:0]: Table size
IntxReq_i
Input
When asserted, the Endpoint is requesting attention from the
interrupt service routine unless MSI or MSI-X interrupts are
enabled. Remains asserted until the device driver clears the
pending request.
5-10
Interrupts for Endpoints when Multiple MSI/MSIX Support Is Enabled
UG-01145_avmm
2015.05.14
Altera Corporation
64- or 128-Bit Avalon-MM Interface to the Application Layer
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