Intel 41210 Design Manual page 4

Contents
8.6.1 Embedded PCI-X 133 MHz ................................................................................... 39
8.6.2 Embedded PCI-X 100 MHz ................................................................................... 40
8.6.3 PCI-X 66 MHz Embedded Topology...................................................................... 41
8.6.4 PCI 66 MHz Embedded Topology ......................................................................... 42
8.6.5 PCI 33 MHz Embedded Mode Topology ............................................................... 43
9 PCI Express Layout..................................................................................................................... 45
9.1 General recommendations ................................................................................................. 45
9.2 PCI-Express Layout Guidelines.......................................................................................... 46
9.3 Adapter Card Layout Guidelines......................................................................................... 46
10 Circuit Implementations.............................................................................................................. 49
10.1 41210 Bridge Analog Voltage Filters .................................................................................. 49
10.1.1 PCI Analog Voltage Filters..................................................................................... 50
10.1.2 PCI Express Analog Voltage Filter ........................................................................ 50
10.1.3 Bandgap Analog Voltage Filter .............................................................................. 51
10.2 Intel® 41210 Serial to Parallel PCI Bridge Reference and Compensation Pins ................. 53
10.2.1 SM Bus .................................................................................................................. 54
11 41210 Bridge Customer Reference Boards............................................................................... 55
11.1 Board Stack-up ................................................................................................................... 55
11.2 Material ............................................................................................................................... 56
11.3 Impedance .......................................................................................................................... 56
11.4 Board Outline...................................................................................................................... 57
12 Design Guide Checklist .............................................................................................................. 59
Figures
1 41210 Bridge Microcontroller Block Diagram ............................................................................. 11
2 41210 Bridge Microcontroller Connections................................................................................. 11
3 41210 Bridge Block Diagram ...................................................................................................... 12
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4 Intel 41210 Bridge Adapter Card Block Diagram...................................................................... 13
5 Top View - 41210 Bridge 567-Ball FCBGA Package Dimensions.............................................. 15
6 Bottom View - 41210 Bridge 567-Ball FCBGA Package Dimensions ........................................ 16
7 Side View - 41210 Bridge 567-Ball FCBGA Package Dimensions............................................. 17
8 Decoupling Placement for Core and PCI Express Voltage Planes ............................................ 19
9 Decoupling Placement for PCI/PCI-X 1.5V and 3.3V Voltage Planes ........................................ 20
10 41210 Bridge Single-Layer Split Voltage Plane.......................................................................... 22
11 Crosstalk Effects on Trace Distance and Height ........................................................................ 26
12 PCB Ground Layout Around Connectors ................................................................................... 26
13 Cross Section of Differential Trace............................................................................................. 28
14 Two-by-two Differential Impedance Matrix ................................................................................. 28
15 Adapter Card Stackup ................................................................................................................ 30
16 PCI RCOMP ............................................................................................................................... 33
17 PCI Clock Distribution and Matching Requirements................................................................... 36
18 Embedded PCI-X 133 MHz Topology ........................................................................................ 39
19 Embedded PCI-X 100 MHz Topology ........................................................................................ 40
20 PCI-X 66 MHz Embedded Routing Topology ............................................................................. 41
21 PCI 66 MHz Embedded Topology .............................................................................................. 42
iv Intel® 41210 Serial to Parallel PCI Bridge Design Guide