14 www.xilinx.com Embedded Tri-Mode Ethernet MAC User GuideUG074 (v2.2) February 22, 2010Preface: About This Guide RConventionsThis document uses the following conventions. An example illustrates each convention.TypographicalThe typographical conventions in the following table are used in this document:Online DocumentThe cross-reference and linking conventions shown in the following table are used in thisdocument:Convention Meaning or Use ExampleItalic fontReferences to other manuals See the Virtex-4 Data Sheet formore information.Emphasis in textIf a wire is drawn so that itoverlaps the pin of a symbol, thetwo nets are not connected.Byte/bit“B” means “byte,”and“b” means “bit”8B word64b wordEXCEPTIONS: 8B/10B = 8 bit/10 bit64B/66B = 64 bit/66 bitHex and binarynotationHex and binary numbers are in amonospace typeface.The 0x prefix is often used todesignate a hex string.0 or 1 [binary]11010011 [binary]0x0123456789ABCDEFVertical ellipsis...Repetitive material that hasbeen omittedIOB #1: Name = QOUT’IOB #2: Name = CLKIN’...Horizontal ellipsis . . . Repetitive material that hasbeen omittedallow block block_nameloc1 loc2 ... locn;Convention Meaning or Use ExampleBlue text Cross-reference link to a locationin the current documentSee the section “AdditionalResources” for details.Refer to “Title Formats” inChapter 1 for details.Red text Cross-reference link to a locationin another document See the Virtex-4 User Guide.Blue, underlined text Hyperlink to a website (URL) Go to http://www.xilinx.comfor the latest speed files.www.BDTIC.com/XILINX
