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Advantech COM-Express Carrier Board Design Guide Addendum
Table of Contents
Table of Contents .......................................................................................................3 Chapter 1 Introduction............................................................................................7 1.1 COM-Express Overview ................................................................ 7 1.2 Terminology .................................................................................. 8 Table 1.1 Conventions and Terminology .......................................8 1.3 Referenced Documents .............................................................. 10 Table 1.2 Referenced Documents ...............................................10 Chapter 2 Carrier Board Schematic Guidelines .................................................11 2.1 Gigabit Ethernet (GBE) ............................................................... 11 2.1.1 Signal Descriptions .......................................................................11 2.1.2 DC Specifications .........................................................................11 2.1.3 Schematic Guidelines ...................................................................12 2.1.4 Layout Guidelines .........................................................................13 2.2 AC’97 Audio / HD Audio .............................................................. 18 2.2.1 Signal Description .........................................................................18 2.2.2 DC Specifications .........................................................................18 2.2.3 AC’97 Audio Spec.........................................................................18 2.2.4 Schematic Guidelines ...................................................................19 2.2.5 Layout Guidelines .........................................................................22 2.3 Serial ATA ................................................................................... 25 2.3.1 Schematic Guidelines ...................................................................25 2.3.2 Layout Guidelines .........................................................................26 2.4 Primary IDE ................................................................................. 27 2.4.1 Signal Description .........................................................................27 2.4.2 DC Specifications .........................................................................27 2.4.3 IDE Spec.......................................................................................28 2.4.4 Schematic Guidelines ...................................................................28 2.4.5 Layout Guidelines .........................................................................30 2.5 PCI Express Bus ......................................................................... 31 2.5.1 Signal Description .........................................................................31 2.5.2 Schematic Guidelines ...................................................................32 2.5.3 Layout Guidelines .........................................................................35 2.6 SDVO .......................................................................................... 38 2.7 PCI-Bus ....................................................................................... 39 2.7.1 Signal Description .........................................................................39 2.7.2 DC Specifications .........................................................................40 2.7.3 AC Specifications..........................................................................40 2.7.4 Schematic Guidelines ...................................................................40 2.7.5 Layout Guidelines .........................................................................44 2.8 Universal Serial Bus (USB) ......................................................... 47 2.8.1 Signal Description .........................................................................47 2.8.2 DC Specifications .........................................................................47 2.8.3 USB Spec. ....................................................................................47 2.8.4 Schematic Guidelines ...................................................................47 2.8.5 Layout Guideline ...........................................................................49 2.9 LVDS ........................................................................................... 51 2.9.1 Signal Description .........................................................................51 2.9.2 DC Specifications .........................................................................51 2.9.3 Schematic Guidelines ...................................................................51 2.9.4 Layout Requirements....................................................................52 Table of Contents
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