opb_pci_arbiter.fm pvilla

We use cookies to personalise content and ads, to provide social media features and to analyse traffic. We share info about use of our site with social media, ads and analytics partners. By continuing to browse you are agreeing to use of cookies. See details or close this message.

Page

100%

Specifications	opb_pci_arbiter.fm pvilla
Business section

OPB PCI Arbiter 2www.xilinx.comDS478 August 5, 2004 Product Specification Arbitration Schemes The OPB_PCI_Arbiter provides fi

Specifications	opb_pci_arbiter.fm pvilla
Outline	OPB PCI Arbiter Introduction Features Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters Allowable Parameter Combinations and Considerations Arbitration Schemes Fixed Arbitration Rotating Arbitration OPB_PCI_Arbiter Design Parameters OPB_PCI_Arbiter I/O Signals Parameter/Port Dependencies OPB_PCI_Arbiter Register Descriptions OPB_PCI_Arbiter Block Diagram Design Implementation Reference Documents
Suggested Link Details/Purchase
Content	OPB PCI Arbiter 2www.xilinx.comDS478 August 5, 2004 Product Specification Arbitration Schemes The OPB_PCI_Arbiter provides fixed and rotating schemes to determine which PCI master is granted bus access in the case that multiple masters simultaneously request control. These schemes are described below. Fixed Arbitration The fixed arbitration scheme always places PCI master 0 at the highest priority with successive masters at incrementally lower priorities. This is used in cases that require one PCI master have the majority of bus access. For example, if one mas- ter provides initialization for many system components, that master should be connected to PCI_Req_n[0] and PCI_GNT_n[0] to achieve the highest priority in fixed arbitration. Table 1. illustrates the fixed arbitration scheme with four masters. Each column denotes the appropriate priority level for the PCI master in a given row and time is increasing from left to right. Shaded cells indicate the PCI master granted bus access for each transaction. Notice that the priority levels for the PCI masters remain fixed regardless of which master acquires bus control. Table 1: Fixed Arbitration Scheme PCI Master # Priority for PCI Transaction n Priority for PCI Transaction n+1 Priority for PCI Transaction n+2 Priority for PCI Transaction n+3 Priority for PCI Transaction n+4 0HighestHighestHighestHighestHighest 1Next HighestNext HighestNext HighestNext HighestNext Highest 2Next LowestNext LowestNext LowestNext LowestNext Lowest 3LowestLowestLowestLowestLowest Rotating Arbitration The rotating arbitration scheme that shifts the priority level for each PCI master following bus transactions. This is when equal bus access is desired for all PCI masters. Table 2. illustrates the rotating arbitration scheme with four masters. Each column denotes the appropriate priority level for the PCI master in a given row and time is increasing from left to right. Shaded cells indicate the PCI master granted bus access for each transaction. Notice that the priority levels for the PCI Mas- ters rotate, moving granted masters to the lowest priority for following transaction. Table 2: Rotating Arbitration Scheme PCI Master # Priority for PCI Transaction n Priority for PCI Transaction n+1 Priority for PCI Transaction n+2 Priority for PCI Transaction n+3 Priority for PCI Transaction n+4 0HighestNext HighestLowestHighestNext Lowest 1Next HighestNext LowestHighestNext HighestLowest 2Next LowestLowestNext HighestNext LowestHighest 3LowestHighestNext LowestLowestNext Highest Discontinued IP
Navigation	Previous Page / Next Page
Following Datasheets	opb_plbv46_bridge (12 pages) opb_sdram (32 pages) opb_spi (31 pages) opb_sysace (11 pages) opb_timebase_wdt (9 pages) opb_timer (13 pages) opb_uart16450 (15 pages) opb_uart16550 (19 pages) opb_v20 (32 pages) OPC (4 pages)
Check in e-portals	World-H-News Products Extensions Partners Automation Jet Parts
Sitemap Folder	group1 group2 group3 group4 group5 group6 group7 group8 group9 group10 group11 group12 group13 group14 group15 group16 group17 group18 group19 group20 group21 group22 group23 group24 group25 group26 group27 group28 group29 group30 group31 group32 group33 group34 group35 group36 group37 group38 group39 group40 group41 group42 group43 group44 group45 group46 group47 group48 group49 group50 group51 group52 group53 group54 group55 group56 group57 group58 group59 group60 group61 group62 group63 group64 group65 group66 group67 group68 group69 group70 group71 group72 group73 group74 group75 group76 group77 group78 group79 group80 group81 group82 group83 group84 group85 group86 group87 group88 group89 group90 group91 group92 group93 group94 group95 group96 group97 group98 group99 group100 Prewious Folder Next Folder