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Intel 31154 manual PCI-X at 33 MHz, Embedded PCI-X Specification PICMG 1.2 Overview

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PCI-X Layout Guidelines

7.2.4PCI-X at 33 MHz

The 31154 supports running in an eight-slot PICMG 1.2 style passive backplane environment at 33 MHz. To verify this, simulations were run based on the trace impedance of 57 Ω ± 10%.

7.2.4.1Embedded PCI-X Specification PICMG 1.2 Overview

The Embedded PCI-X (ePCI-X) Specification PICMG 1.2 is a specification supported by the PCI Industrial Computer Manufacturers Group. ePCI-X system host boards (SHBs) are defined in two form factors: full-size and half-size. The full-size SHB length is identical to the ISA long board length. Half-size SHB form factor is based on the popular half-size ISA board.

7.2.4.2PICMG 1.2 System Overview

An ePCI-X system is composed of one ePCI-X system host board (SHB) and an ePCI-X backplane. The SHB provides arbitration, clock distribution, and reset functions for all expansion boards. The SHB is responsible for performing system initialization by managing the IDSEL signal of each local board. Physically, the SHB slot can be located at any slot in the backplane. Electrically, it must be at the end of each of primary PCI/PCI-X bus.

52	Intel® 31154 133 MHz PCI Bridge Design Guide Design Guide

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Intel 31154 manual PCI-X at 33 MHz, Embedded PCI-X Specification PICMG 1.2 Overview, PICMG 1.2 System Overview

Contents

Intel 31154 133 MHz PCI Bridge Design Guide Design GuideApril Intel 31154 133 MHz PCI Bridge Design Guide Contents ContentsIntel 31154 133 MHz PCI Bridge Design Guide Figures TablesContents Intel 31154 133 MHz PCI Bridge Design GuideContents Intel 31154 133 MHz PCI Bridge Design GuideRevision History ContentsIntel 31154 133 MHz PCI Bridge Design Guide DateAbout This Document 1.1 Terminology and DefinitionsAbout This Document Terminology and Definition Sheet 1 ofTable 1. Terminology and Definition Sheet 2 of About This DocumentIntel 31154 133 MHz PCI Bridge Design Guide Design Guide TermPCI-to-PCI Bridge Configurations Introduction22.1 Product Overview Introduction2.2 Features List Features ListPCI Local Bus Specification, Revision 2.3 compliant PCI-to-PCI Bridge Architecture Specification, Revision 1.2 compliant2.3 Related External Specifications PCI Local Bus Specification, RevisionPCI-to-PCI Bridge Architecture Specification, Revision PCI Bus Power Management Interface Specification, RevisionIntroduction THIS PAGE INTENTIONALLY LEFT BLANKIntel 31154 133 MHz PCI Bridge Design Guide Design Guide Package Information Package InformationIntel 31154 133 MHz PCI Bridge Design Guide Design Guide Figure 2. Intel 31154 133 MHz PCI Bridge Package Package InformationIntel 31154 133 MHz PCI Bridge Design Guide Design Guide BOTTOM VIEWFigure 3. Intel 31154 133 MHz PCI Bridge Ball Map-Top View, Left Side Package InformationIntel 31154 133 MHz PCI Bridge Design Guide Design Guide AC VSSPackage Information Intel 31154 133 MHz PCI Bridge Design Guide Design Guide13 14 15 16 17 18 19 20 VCCA3.1 Total Signal Count Total Signal CountSignals Package InformationTHIS PAGE INTENTIONALLY LEFT BLANK Package InformationIntel 31154 133 MHz PCI Bridge Design Guide Design Guide Terminations4 TerminationsPull-Up/Pull-Down Terminations Sheet 1 of Intel 31154 133 MHz PCI Bridge Design Guide Design GuidePull-Up/Pull-Down Terminations Sheet 2 of SignalSecondary PCI Signals TerminationsPull-Up/Pull-Down Terminations Sheet 3 of SignalTerminations Intel 31154 133 MHz PCI Bridge Design Guide Design GuidePull-Up/Pull-Down Terminations Sheet 4 of SignalTerminations Intel 31154 133 MHz PCI Bridge Design Guide Design GuidePull-Up/Pull-Down Terminations Sheet 5 of Signalresistor default TerminationsPull-Up/Pull-Down Terminations Sheet 6 of SignalTerminations Intel 31154 133 MHz PCI Bridge Design Guide Design GuidePull-Up/Pull-Down Terminations Sheet 7 of Signal“Power Sequencing” on page “Power Sequencing” on pagePull-Up/Pull-Down Terminations Sheet 8 of SignalTerminations Intel 31154 133 MHz PCI Bridge Design Guide Design GuidePull-Up/Pull-Down Terminations Sheet 9 of SignalTerminations Intel 31154 133 MHz PCI Bridge Design Guide Design GuideTHIS PAGE INTENTIONALLY LEFT BLANK TerminationsIntel 31154 133 MHz PCI Bridge Design Guide Design Guide PCI/PCI-X Interface 5.1 PCI/PCI-X Voltage Levels5.2 Interrupt Routing PCI/PCI-X Interface5.3 IDSEL Lines 5.3.1 Primary IDSEL Line5.3.2 Secondary IDSEL Lines IDSEL Mapping5.5 Opaque Memory Region Enable 5.3.3 Secondary IDSEL Masking5.4 CompactPCI* Hot Swap Mode Select 5.3.4 Secondary Clock Control5.6 PCI-X Initialization Clocking Modes 5.6.1 Primary PCI Clocking Mode5.6.2 Secondary PCI Clocking Mode PCI/PCI-X InterfacePCI-X Clocking Modes Secondary Bus Frequency InitializationPCI/PCI-X Interface Intel 31154 133 MHz PCI Bridge Design Guide Design Guide5.6.3 Primary-to-Secondary Frequency Limits PCI-X Initialization PatternPCI/PCI-X Interface Intel 31154 133 MHz PCI Bridge Design Guide Design GuideRouting Guidelines Routing GuidelinesIntel 31154 133 MHz PCI Bridge Design Guide Design Guide 6.1 Crosstalk Figure 6. Crosstalk Effects on Trace Distance and HeightRouting Guidelines Intel 31154 133 MHz PCI Bridge Design Guide Design GuideFigure 7. PCB Ground Layout Around Connectors 6.2 EMI ConsiderationsRouting Guidelines Intel 31154 133 MHz PCI Bridge Design Guide Design Guide6.3 Power Distribution and Decoupling 6.3.1 Decoupling RecommendationsTable 11. Intel 31154 133 MHz PCI Bridge Decoupling Recommendations Routing GuidelinesRouting Guidelines 6.4 Trace ImpedanceIntel 31154 133 MHz PCI Bridge Design Guide Design Guide THIS PAGE INTENTIONALLY LEFT BLANK Routing GuidelinesIntel 31154 133 MHz PCI Bridge Design Guide Design Guide PCI-X Layout Guidelines PCI-X Layout GuidelinesAdd-in Card Routing Parameters Intel 31154 133 MHz PCI Bridge Design Guide Design GuidePCI-X Layout Guidelines 7.1 PCI Clock Layout GuidelinesIntel 31154 133 MHz PCI Bridge Design Guide Design Guide #### Intel####%,%!#%# Notes -3%%%7.2 PCI-X Topology Layout Guidelines PCI-X Slot GuidelinesPCI-X Layout Guidelines Intel 31154 133 MHz PCI Bridge Design Guide Design GuideWiring Lengths for 133 MHz Slot 7.2.1 Single Slot at 133 MHzFigure 9. Single-Slot Point-to-Point Topology PCI-X Layout GuidelinesWiring Lengths for Embedded 133 MHz Design PCI-X Layout GuidelinesIntel 31154 133 MHz PCI Bridge Design Guide Design Guide B3058-01Figure 11. Dual-Slot Configuration Wiring Lengths for 100 MHz Dual-Slot7.2.2 Dual-Slot at 100 MHz PCI-X Layout GuidelinesWiring Lengths for Embedded 100 MHz Design PCI-X Layout GuidelinesIntel 31154 133 MHz PCI Bridge Design Guide Design Guide Lower AD BusTable 18. Wiring Lengths for 66 MHz Quad-Slot Sheet 1 of 7.2.3 Quad-Slots at 66 MHzFigure 13. Quad-Slots 66 MHz Topology PCI-X Layout GuidelinesTable 18. Wiring Lengths for 66 MHz Quad-Slot Sheet 2 of PCI-X Layout GuidelinesIntel 31154 133 MHz PCI Bridge Design Guide Design Guide Lower AD BusFigure 14. Embedded Intel 31154 133 MHz PCI Bridge Wiring for 66 MHz Wiring Lengths for Embedded 66 MHz Design7.2.3.1 Embedded Intel 31154 133 MHz PCI Bridge Application at 66 MHz PCI-X Layout Guidelines7.2.4.1 Embedded PCI-X Specification PICMG 1.2 Overview 7.2.4 PCI-X at 33 MHz7.2.4.2 PICMG 1.2 System Overview PCI-X Layout GuidelinesPCI-X Layout Guidelines Figure 15. An Example of an ePCI-X SystemIntel 31154 133 MHz PCI Bridge Design Guide Design Guide Table 20. Wiring Lengths for PICMG 1.2 Backplane Figure 16. PCI-X Data Bus PICMG 1.2 Style BackplanePCI-X Layout Guidelines Intel 31154 133 MHz PCI Bridge Design Guide Design GuideTable 21. PCI-X Clock Wiring Lengths for PICMG Backplane Figure 17. PCI-X Clock PICMG 1.2 Style BackplaneSlot1 SlotNTHIS PAGE INTENTIONALLY LEFT BLANK PCI-X Layout GuidelinesIntel 31154 133 MHz PCI Bridge Design Guide Design Guide Power Considerations 8.1 Analog Power PinsPower Considerations Intel 31154 133 MHz PCI Bridge Design Guide Design Guide8.2 Power Sequencing Intel 133 MHz PCI BridgePower Considerations Intel 31154 133 MHz PCI Bridge Design Guide Design GuideFigure 21. Intel IQ31154 Customer Reference Board Block Diagram Customer Reference BoardIntel 133 MHz PCI BridgeCustomer Reference Board Customer Reference Board StackupIntel 31154 133 MHz PCI Bridge Design Guide Design Guide Debug Connectors and Logic Analyzer Connectivity10 10.1 Probing PCI-X SignalsDebug Connectors and Logic Analyzer Connectivity Intel 31154 133 MHz PCI Bridge Design Guide Design GuideDebug Connectors and Logic Analyzer Connectivity Logic Analyzer PodIntel 31154 133 MHz PCI Bridge Design Guide Design Guide Logic Analyzer Pod Debug Connectors and Logic Analyzer ConnectivityIntel 31154 133 MHz PCI Bridge Design Guide Design Guide Debug Connectors and Logic Analyzer Connectivity Logic Analyzer PodIntel 31154 133 MHz PCI Bridge Design Guide Design Guide AD15Logic Analyzer Pod Debug Connectors and Logic Analyzer ConnectivityIntel 31154 133 MHz PCI Bridge Design Guide Design Guide Debug Connectors and Logic Analyzer Connectivity PCI-X Signal NameLogic Analyzer Pod Intel 31154 133 MHz PCI Bridge Design Guide Design GuideDebug Connectors and Logic Analyzer Connectivity The recommended placement of the Mictor connectors is at either end of the bus segment. The Mictors are placed at the end of a stub that must be as short as possible, and are then daisy-chained off either end of the bus. When there is not enough room to place the Mictors at least 0.5 from the target, an alternate method can be used. This alternate method is to place the logic analyzer termination circuitry on the target and then extend the etch from the end of the termination circuitry over to the Mictor connectors. The connection from the Mictors to the logic analyzer must then be made with the E5351A. The E5346A contains the logic analyzer termination circuitry, and the E5351A does notLogic Analyzer Pod Intel 31154 133 MHz PCI Bridge Design Guide Design GuideTHIS PAGE INTENTIONALLY LEFT BLANK Debug Connectors and Logic Analyzer ConnectivityIntel 31154 133 MHz PCI Bridge Design Guide Design Guide Thermal Solutions Thermal SolutionsTable 29. Operational Power Maximum PowerTHIS PAGE INTENTIONALLY LEFT BLANK Thermal SolutionsIntel 31154 133 MHz PCI Bridge Design Guide Design Guide References12 12.1 Related DocumentsReferences Table 30. Design Reference MaterialTHIS PAGE INTENTIONALLY LEFT BLANK ReferencesIntel 31154 133 MHz PCI Bridge Design Guide Design Guide