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4 Intel
®
31154 133 MHz PCI Bridge Design Guide
Contents
7.2.4.2 PICMG 1.2 System Overview ................................................................52
8 Power Considerations ...................................................................................................................57
8.1 Analog Power Pins .............................................................................................................57
8.2 Power Sequencing..............................................................................................................58
9 Customer Reference Board...........................................................................................................59
10 Debug Connectors and Logic Analyzer Connectivity ....................................................................61
10.1 Probing PCI-X Signals........................................................................................................61
11 Thermal Solutions..........................................................................................................................69
12 References....................................................................................................................................71
12.1 Related Documents............................................................................................................71
Figures
1Intel
®
31154 133 MHz PCI Bridge Applications............................................................................9
2Intel
®
31154 133 MHz PCI Bridge Package...............................................................................14
3Intel
®
31154 133 MHz PCI Bridge Ball Map—Top View, Left Side ............................................15
4Intel
®
31154 133 MHz PCI Bridge Ball Map—Top View, Right Side..........................................16
5 IDSEL Mapping ..........................................................................................................................30
6 Crosstalk Effects on Trace Distance and Height........................................................................36
7 PCB Ground Layout Around Connectors ...................................................................................37
8 PCI Clock Distribution and Matching Requirements...................................................................43
9 Single-Slot Point-to-Point Topology............................................................................................45
10 Embedded Intel
®
31154 133 MHz PCI Bridge Design 133 MHz PCI-X Layout..........................46
11 Dual-Slot Configuration ..............................................................................................................47
12 Embedded Intel
®
31154 133 MHz PCI Bridge Design 100 MHz PCI-X Layout..........................48
13 Quad-Slots 66 MHz Topology ....................................................................................................49
14 Embedded Intel
®
31154 133 MHz PCI Bridge Wiring for 66 MHz..............................................51
15 An Example of an ePCI-X System..............................................................................................53
16 PCI-X Data Bus PICMG 1.2 Style Backplane.............................................................................54
17 PCI-X Clock PICMG 1.2 Style Backplane ..................................................................................55
18 P_VCCA Filter ............................................................................................................................57
19 S_VCCA Filter ............................................................................................................................57
20 PVIO Voltage Protection Diode ..................................................................................................58
21 Intel
®
IQ31154 Customer Reference Board Block Diagram.......................................................59
Tables
1 Terminology and Definition...........................................................................................................7
2 PCI-to-PCI Bridge Configurations.................................................................................................9
3 Features List...............................................................................................................................10
4 Total Signal Count ......................................................................................................................17
5 Pull-Up/Pull-Down Terminations.................................................................................................19
6 PCI/PCI-X Voltage Levels ..........................................................................................................29
7 HS_FREQ Encoding...................................................................................................................31
8 PCI-X Clocking Modes ...............................................................................................................33